Microsoft Win32 to Microsoft .NET Framework API Map

 

Microsoft .NET Framework and Microsoft Visual Studio User Education Teams
Microsoft Corporation

January 2004

Applies to:
    Microsoft® .NET Framework version 1.0 or 1.1
    Microsoft Visual Studio® .NET
    Microsoft Win32® functions

Summary: This article identifies the Microsoft .NET Framework version 1.0 or 1.1 APIs that provide similar functionality to Microsoft Win32 functions. One or more relevant .NET Framework APIs are shown for each Win32 function listed. The intended audience for this article is experienced Win32 developers who are creating applications or libraries based on the Microsoft .NET Framework, but anyone looking for a managed counterpart for a Win32 function could find this document useful. (85 printed pages)

In this article, the Microsoft® Win32® functions are organized by category. Each Win32 function that is listed belongs to only one category, and each category is presented in its own table. An alphabetical list of the Win32 categories is provided, as well as a hierarchical list. To locate a Win32 function, select the appropriate category from one of the category lists or search the article for the name of the function. If you do not find the Win32 function that you are seeking, it means that no equivalent .NET Framework API exists in the .NET Framework version 1.0 or 1.1 or that the Win32 function and the relevant .NET Framework API were inadvertently omitted from the list.

If you believe that a Win32 function and the relevant .NET Framework API have been omitted from this article, please let us know by using the feedback link. For more information on the APIs listed in this article, see the Platform SDK documentation or the .NET Framework SDK documentation in the MSDN® library.

Alphabetical Win32 Category List

A-C

Atom functions	Color functions
Bitmap functions	Combo box functions
Brush functions	Common dialog box functions
Button functions	Console functions
Clipboard functions	Coordinate functions
Clipping functons	Cursor functions

D-I

Debugging functions	File I/O functions
Device context functions	File system functions
Dialog box functions	Filled shape functions
Dynamic-link library functions	Font and text functions
Error handling functions	Icon functions
Event logging functions	Input Method Editor functions

J-N

Keyboard accelerator functions	Message and message queue functions
Keyboard input functions	Metafile functions
Line and curve functions	Mouse input functons
List box functions	Multiple display monitor functions
Memory management functions	Multiple-document interface functions
Menu functions	National language functions

O-R

Painting and drawing functions	PSAPI functions
Path functions	Rectangle functions
Pen functions	Region functions
Performance monitoring functions	Registry functions
Printing functions	Resource functions
Process and thread functions	Rich edit control functions

S-T

Scroll bar functions	Tape backup functions
Service functions	Text object model functions
String functions	Time functions
Structured exception-handling functions	Timer functions
Synchronization functions	Tool Help functions
System information functions

U-Z

Unicode and character set functions	Window functions
User profile functions	Window class functions
Version information functions	Window procedure functions
	Window property functions

Hierarchical Win32 Category List

Base Services

Debugging and Error Handling	Miscellaneous
Debugging	Memory management
Error handling	User profile
Event logging	Performance
Structured exception-handling	Performance monitoring
DLLs, Processes, and Threads	PSAPI
Console applications	Tool Help
Dynamic-link library	Windows System Information
Process and thread	Registry
Service	System information
Synchronization	Time
Files and I/O
File I/O
File system
Tape backup

Graphics Device Interface

Bitmap	Metafile
Brush	Multiple display monitor
Clipping	National language
Color	Painting and drawing
Coordinate	Path
Device context	Pen
Filled shape	Printing and print spooler
Font and text	Rectangle
Input Method Editor	Region
Line and curve	Unicode and character set

User Interface

Controls	User Input
Button	Common dialog box
Combo box	Keyboard accelerator
List box	Keyboard input
Rich edit control	Mouse input
Scroll bar	Windowing
Text object model	Dialog box
Data Exchange	Message and message queue
Atom	Multiple-document interface
Clipboard	Timer
Resources	Window
Cursor	Window class
Icon	Window procedure
Menu	Window property
Resource
String
Version information

Atom Functions

Win32 function	Description	.NET Framework API
AddAtom	Adds a character string to the local atom table.	System.String.Intern Note   String is not exactly an atom.
FindAtom	Searches the local atom table for the specified character string.	System.String.IsInterned Note   String is not exactly an atom.

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Bitmap Functions

Win32 function	Description	.NET Framework API
AlphaBlend	Displays a bitmap with transparent or semitransparent pixels.	System.Drawing.Graphics.DrawImage
BitBlt	Performs a bit-block transfer.	System.Drawing.Graphics.DrawImage
CreateBitmap	Creates a bitmap.	System.Drawing.Bitmap constructor Note   Creates a DIB, not a DDB.
GetBitmapDimensionEx	Gets the dimensions of a bitmap.	System.Drawing.Bitmap.Size
GetDIBColorTable	Retrieves RGB color values from a DIB section bitmap.	System.Drawing.Bitmap.Palette
GetDIBits	Copies a bitmap into a buffer.	System.Drawing.Bitmap.LockBits
GetPixel	Gets the RGB color value of the pixel at a given coordinate.	System.Drawing.Bitmap.GetPixel
GradientFill	Fills rectangle and triangle structures.	System.Drawing.Graphics.FillRectangle(Drawing2D.LinearGradiantBrush, Rectangle)
LoadBitmap	Loads a bitmap from a module's executable file.	System.Drawing.Bitmap.Bitmap(Type, String)
SetPixel	Sets the color for a pixel.	System.Drawing.Bitmap.SetPixel
SetPixelV	Sets a pixel to the best approximation of a color.	System.Drawing.Bitmap.SetPixel(…, Graphics.GetNearestColor(Color))
StretchBlt	Copies a bitmap and stretches or compresses it.	System.Drawing.Graphics.DrawImage

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Brush Functions

Win32 function	Description	.NET Framework API
CreateBrushIndirect	Creates a brush with a specified style, color, and pattern.	Any of the following: System.Drawing.Brushes System.Drawing.SolidBrush System.Drawing.TextureBrush System.Drawing.Drawing2D.HatchBrush System.Drawing.Drawing2D.LinearGradientBrush System.Drawing.Drawing2D.PathGradientBrush
CreateHatchBrush	Creates a brush with a hatch pattern and color.	System.Drawing.Drawing2D.HatchBrush constructor
CreatePatternBrush	Creates a brush with a bitmap pattern.	System.Drawing.TextureBrush constructor
CreateSolidBrush	Creates a brush with a solid color.	System.Drawing.SolidBrush constructor
GetSysColorBrush	Gets a handle for a brush that corresponds to a color index.	System.Drawing.Brushes class

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Button Functions

Win32 function	Description	.NET Framework API
CheckDlgButton	Changes the check state of a button control.	System.Windows.Forms.CheckBox.Checked
CheckRadioButton	Adds a check mark to a specified radio button in a group and removes a check mark from all other radio buttons in the group.	System.Windows.Forms.RadioButton.Checked
IsDlgButtonChecked	Determines whether a button control has a check mark next to it or whether a three-state button control is grayed, checked, or neither.	System.Windows.Forms.CheckBox.CheckState

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Clipboard Functions

Win32 function	Description	.NET Framework API
CountClipboardFormats	Retrieves the number of different data formats currently on the clipboard.	System.Windows.Forms.DataObject.GetFormats
EnumClipboardFormats	Enumerates the data formats currently available on the clipboard.	System.Windows.Forms.DataObject.GetFormats
GetClipboardData	Retrieves data from the clipboard in a specified format.	System.Windows.Forms.ClipBoard.GetDataObject
IsClipboardFormatAvailable	Determines whether the clipboard contains data in the specified format.	System.Windows.Forms.DataObject.GetDataPresent
RegisterClipboardFormat	Registers a new clipboard format.	System.Windows.Forms.DataFormats.GetFormat
SetClipboardData	Places data on the clipboard in a specified clipboard format.	System.Windows.Forms.ClipBoard.SetDataObject

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Clipping Functions

Win32 function	Description	.NET Framework API
ExcludeClipRect	Creates a new clipping region that consists of the existing clipping region minus the specified rectangle.	System.Drawing.Graphics.ExcludeClip
ExtSelectClipRgn	Combines the specified region with the current clipping region using the specified mode.	System.Drawing.Graphics.SetClip
GetClipBox	Retrieves the dimensions of the tightest bounding rectangle that can be drawn around the current visible area on the device.	System.Drawing.Graphics.VisibleClipBounds
GetClipRgn	Retrieves a handle identifying the current application-defined clipping region for the specified device context.	System.Drawing.Graphics.Clip
IntersectClipRect	Creates a new clipping region from the intersection of the current clipping region and the specified rectangle.	System.Drawing.Graphics.IntersectClip
OffsetClipRgn	Moves the clipping region of a device context by the specified offsets.	System.Drawing.Graphics.TranslateClip
PtVisible	Determines whether the specified point is within the clipping region of a device context.	System.Drawing.Graphics.IsVisible
RectVisible	Determines whether any part of the specified rectangle lies within the clipping region of a device context.	System.Drawing.Graphics.IsVisible
SelectClipPath	Selects the current path as a clipping region for a device context, combining the new region with any existing clipping region by using the specified mode.	System.Drawing.Graphics.SetClip
SelectClipRgn	Selects a region as the current clipping region for the specified device context.	System.Drawing.Graphics.Clip

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Color Functions

Win32 function	Description	.NET Framework API
CreateHalftonePalette	Creates a halftone palette for the specified device context.	System.Drawing.Graphics.GetHalftonePalette
CreatePalette	Creates a logical palette.	System.Drawing.Image.Palette
GetNearestColor	Retrieves a color value identifying a color from the system palette that will be displayed when the specified color value is used.	System.Drawing.Graphics.GetNearestColor
GetPaletteEntries	Retrieves a specified range of palette entries from the given logical palette.	System.Drawing.Image.Palette.Entries

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Combo Box Functions

Win32 function	Description	.NET Framework API
DlgDirListComboBox	Replaces the contents of a combo box with the names of specified subdirectories and files.	System.Windows.Forms.ComboBox.Items.AddRange(System.IO.Directory.GetFileSystemEntries)
DlgDirSelectComboBoxEx	Retrieves the current selection from a combo box filled by using DlgDirListComboBox.	System.Windows.Forms.ComboBox.SelectedItem
GetComboBoxInfo	Retrieves information about a specified combo box.	System.Windows.Forms.ComboBox properties

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Common Dialog Box Functions

Win32 function	Description	.NET Framework API
ChooseColor	Creates a Color dialog box that enables the user to select a color.	System.Windows.Forms.ColorDialog constructor Note   Dialog cannot be modified through a hook.
ChooseFont	Creates a Font dialog box that enables the user to choose attributes for a logical font.	System.Windows.Forms.FontDialog constructor Note   Dialog cannot be modified through a hook.
GetFileTitle	Retrieves the name of the specified file.	System.IO.FileInfo.Name Note   Does not take user preferences into account.
GetOpenFileName	Creates an Open dialog box that lets the user specify the drive, directory, and name of a file or set of files to open.	System.Windows.Forms.OpenFileDialog.ShowDialog Note   Dialog cannot be modified through a hook.
GetSaveFileName	Creates a Save dialog box that lets the user specify the drive, directory, and name of a file to save.	System.Windows.Forms.SaveFileDialog.ShowDialog Note   Dialog cannot be modified through a hook.
PageSetupDlg	Creates a Page Setup dialog box that enables the user to specify the attributes of a printed page.	System.Windows.Forms.PageSetupDialog.ShowDialog Note   Dialog cannot be modified through a hook.
PrintDlg	Displays a Print dialog box.	System.Windows.Forms.PrintDialog.ShowDialog Note   Dialog cannot be modified through a hook.

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Console Functions

Win32 function	Description	.NET Framework API
GetStdHandle	Retrieves a handle for the standard input, standard output, or standard error device.	System.Console.OpenStandardIn System.Console.OpenStandardOut System.Console.OpenStandardError
ReadConsole	Reads character input from the console input buffer and removes it from the buffer.	System.Console.Read
SetStdHandle	Sets the handle for the standard input, standard output, or standard error device.	System.Console.SetIn System.Console.SetOut System.Console.SetError
WriteConsole	Writes a character string to a console screen buffer beginning at the current cursor location.	System.Console.Write

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Coordinate Functions

Win32 function	Description	.NET Framework API
ClientToScreen	Converts the client-area coordinates of a specified point to screen coordinates.	System.Windows.Forms.Form.PointToScreen
CombineTransform	Concatenates two world-space to page-space transformations.	System.Drawing.Drawing2D.Matrix.Multiply
DPtoLP	Converts device coordinates into logical coordinates.	System.Drawing.Graphics.TransformPoints
GetMapMode	Retrieves the current mapping mode.	System.Drawing.Graphics.PageUnit
GetWindowExtEx	Retrieves the x-extent and y-extent of the window for the specified device context.	System.Drawing.Graphics.PageScale
GetWindowOrgEx	Retrieves the x-coordinates and y-coordinates of the window origin for the specified device context.	System.Drawing.Graphics.Transform.OffsetX System.Drawing.Graphics.Transform.OffsetY
GetWorldTransform	Retrieves the current world-space to page-space transformation.	System.Drawing.Graphics.Transform
LPtoDP	Converts logical coordinates into device coordinates.	System.Drawing.Graphics.TransformPoints
ModifyWorldTransform	Changes the world transformation for a device context using the specified mode.	System.Drawing.Graphics.Transform
OffsetViewportOrgEx	Modifies the viewport origin for a device context using the specified horizontal and vertical offsets.	System.Drawing.Graphics.TranslateTransform
OffsetWindowOrgEx	Modifies the window origin for a device context using the specified horizontal and vertical offsets.	System.Drawing.Graphics.TranslateTransform
ScreenToClient	Converts the screen coordinates of a specified point on the screen-to-client coordinates.	System.Windows.Forms.Form.PointToClient
SetMapMode	Sets the mapping mode of the specified device context.	System.Drawing.Graphics.PageUnit
SetWindowExtEx	Sets the horizontal and vertical extents of the window for a device context by using the specified values.	System.Drawing.Graphics.PageScale Drawing.Graphics.ScaleTransform
SetWindowOrgEx	Specifies which window point maps to the viewport origin (0,0).	System.Drawing.Graphics.TranslateTransform
SetWorldTransform	Sets a two-dimensional linear transformation between world space and page space for the specified device context.	System.Drawing.Graphics.Transform

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Cursor Functions

Win32 function	Description	.NET Framework API
ClipCursor	Confines the cursor to a rectangular area on the screen.	System.Windows.Forms.Cursor.Clip
CopyCursor	Copies the specified cursor.	System.Windows.Forms.Cursor.CopyHandle
CreateCursor	Creates a cursor having the specified size, bit patterns, and hot spot.	System.Windows.Forms.Cursor constructor System.Windows.Forms.Cursor.Size System.Windows.Forms.Cursor.Position
DestroyCursor	Destroys a cursor.	System.Windows.Forms.Cursor.Dispose
GetClipCursor	Retrieves the screen coordinates of the rectangular area to which the cursor is confined.	System.Windows.Forms.Cursor.Clip
GetCursor	Retrieves a handle to the current cursor.	System.Windows.Forms.Cursor.Handle
GetCursorInfo	Retrieves information about the global cursor.	System.Windows.Forms.Cursor.Position System.Windows.Forms.SystemInformation.CursorSize
GetCursorPos	Retrieves the cursor's position.	System.Windows.Forms.Control.MousePosition System.Windows.Forms.Cursor.Position
LoadCursor	Loads a cursor resource from an executable file.	System.Windows.Forms.Cursor constructor
LoadCursorFromFile	Creates a cursor based on data contained in a file.	System.Windows.Forms.Cursor constructor
SetCursor	Sets the cursor shape.	System.Windows.Forms.Cursor.Current
SetCursorPos	Moves the cursor to the specified screen coordinates.	System.Windows.Forms.Cursor.Position
ShowCursor	Displays or hides the cursor.	System.Windows.Forms.Cursor.Show Windows.Forms.Cursor.Hide

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Debugging Functions

Win32 function	Description	.NET Framework API
DebugActiveProcess	Enables a debugger to attach to an active process and debug it.	System.Diagnostics.Debugger.Launch
DebugBreak	Causes a breakpoint exception to occur in the current process.	System.Diagnostics.Debugger.Break
IsDebuggerPresent	Determines whether the calling process is running under the context of a debugger.	System.Diagnostics.Debugger.IsAttached
OutputDebugString	Sends a string to the debugger for display.	System.Diagnostics.Debugger.Log

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Device Context Functions

Win32 function	Description	.NET Framework API
ChangeDisplaySettings	Changes the settings of the default display device to the specified graphics mode.	System.Management.ManagementClass("Win32_VideoController")
ChangeDisplaySettingsEx	Changes the settings of the specified display device to the specified graphics mode.	System.Management.ManagementClass("Win32_VideoController")
DeviceCapabilities	Retrieves the capabilities of a printer device driver.	System.Drawing.Printing.PageSettings System.Drawing.Printing.PrinterSettings
EnumDisplayDevices	Retrieves information about the display devices in a system.	System.Management.ManagementClass("Win32_DesktopMonitor")
EnumDisplaySettings	Retrieves information about one of the graphics modes for a display device.	System.Management.ManagementClass("CIM_VideoControllerResolution")
GetDC	Retrieves a handle to a display device context for the client area of a specified window or for the entire screen.	To retrieve a Graphics object, use any of the following: System.Drawing.Graphics.FromHwnd(Windows.Forms.Control.Handle) System.Drawing.Printing.PrintPageEventArgs.Graphics System.Windows.Forms.PaintEventArgs.Graphics To explicitly retrieve a handle, use the following: System.Drawing.Graphics.GetHdc
GetDCEx	Retrieves a handle to a display device context for the client area of a specified window or for the entire screen.	To retrieve a Graphics object, use any of the following: System.Drawing.Graphics.FromHwnd(Windows.Forms.Control.Handle) System.Drawing.Printing.PrintPageEventArgs.Graphics System.Windows.Forms.PaintEventArgs.Graphics To explicitly retrieve a handle, use the following: System.Drawing.Graphics.GetHdc
GetDeviceCaps	Retrieves device-specific information for the specified device.	System.Drawing.Graphics properties System.Drawing.Printing.PrinterSettings System.Management classes
GetLayout	Retrieves the layout of a device context.	System.Windows.Forms.Control.RightToLeft
GetObject	Retrieves information for the specified graphics object.	System.Drawing.Bitmap properties System.Drawing.Brush properties System.Drawing.Font properties System.Drawing.Pen properties
GetObjectType	Retrieves the type of the specified object.	System.Object.GetType
GetStockObject	Retrieves a handle to one of the stock pens, brushes, fonts, or palettes.	System.Drawing.Brushes System.Drawing.Pens
ReleaseDC	Releases a device context, freeing it for use by other applications.	System.Drawing.Graphics.ReleaseHdc
SetLayout	Sets the layout for a device context.	System.Windows.Forms.Control.RightToLeft = System.Windows.Forms.RightToLeft.Yes

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Dialog Box Functions

Win32 function	Description	.NET Framework API
CreateDialog	Creates a modeless dialog box from a dialog box template resource.	System.Windows.Forms.Form constructor System.Windows.Forms.Form properties
CreateDialogIndirect	Creates a modeless dialog box from a dialog box template in memory.	System.Windows.Forms.Form constructor System.Windows.Forms.Form properties
DefDlgProc	Calls the default dialog box window procedure to provide default processing for any window messages that a dialog box with a private window class does not process.	System.Windows.Forms.Form.DefWndProc
DialogBox	Creates a modal dialog box from a dialog box template resource.	System.Windows.Forms.Form constructor System.Windows.Forms.Form.ShowDialog
DialogBoxIndirect	Creates a modal dialog box from a dialog box template in memory.	System.Windows.Forms.Form constructor System.Windows.Forms.Form.ShowDialog
DialogProc	An application-defined callback function used with the CreateDialog and DialogBox families of functions.	System.Windows.Forms.Form.WndProc
EndDialog	Destroys a modal dialog box.	System.Windows.Forms.Form.Close
GetDlgCtrlID	Retrieves the identifier of the specified control.	System.Windows.Forms.Form.Controls.IndexOf
GetDlgItem	Retrieves a handle to a control in the specified dialog box.	System.Windows.Forms.Form.Controls.Item
GetDlgItemInt	Translates the text of a specified control in a dialog box into an integer value.	System.Int32.Parse(Form.Text) System.UInt32.Parse(Form.Text)
GetDlgItemText	Retrieves the title or text associated with a control in a dialog box.	System.Windows.Forms.Form.Controls.Item[].Text
GetNextDlgGroupItem	Retrieves a handle to the first control in a group of controls that precedes (or follows) the specified control.	Iterate through the controls: System.Windows.Forms.Form.Controls.Item Remember to determine whether the control is active by referencing the Enabled and Visible properties of the control. Note   The order that the controls are presented in might not be the same order in which GetNextDlgGroupItem presents the controls.
GetNextDlgTabItem	Retrieves a handle to the first control that has the WS_TABSTOP style that precedes (or follows) the specified control.	Iterate through the controls: System.Windows.Forms.Form.Controls.Item Remember to determine whether the control is active by referencing the Enabled, Visible, and TabStop properties of the control. Note   The order that the controls are presented in might not be the same order in which GetNextDlgGroupItem presents the controls.
MessageBox	Creates, displays, and operates a message box.	System.Windows.Forms.MessageBox.Show
MessageBoxEx	Creates, displays, and operates a message box.	System.Windows.Forms.MessageBox.Show
MessageBoxIndirect	Creates, displays, and operates a message box.	System.Windows.Forms.MessageBox.Show
SendDlgItemMessage	Sends a message to the specified control in a dialog box.	System.Windows.Forms.Form.WndProc(System.Windows.Forms.Message)
SetDlgItemInt	Sets the text of a control in a dialog box to the string representation of a specified integer value.	System.Windows.Forms.Control.Text = System.Int32.ToString
SetDlgItemText	Sets the title or text of a control in a dialog box.	System.Windows.Forms.Control.Text

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Dynamic-Link Library Functions

Win32 function	Description	.NET Framework API
GetModuleFileName	Retrieves the full path and file name for the file containing the specified module.	System.Reflection.Module.FullyQualifiedName
GetModuleHandle	Retrieves a module handle for the specified module.	System.Runtime.InteropServices.Marshal.GetHINSTANCE
LoadLibrary	Maps the specified executable module into the address space of the calling process.	Any of the following: System.Reflection.Assembly.Load System.Reflection.Assembly.LoadFrom System.Reflection.Assembly.LoadWithPartialName
LoadLibraryEx	Maps the specified executable module into the address space of the calling process.	Any of the following: System.Reflection.Assembly.Load System.Reflection.Assembly.LoadFrom System.Reflection.Assembly.LoadWithPartialName

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Error Handling Functions

Win32 function	Description	.NET Framework API
FatalAppExit	Displays a message box and terminates the application when the message box is closed.	System.Windows.Forms.MessageBox.Show System.Diagnostics.Process.Kill
GetLastError	Retrieves the calling thread's last-error code value.	System.Runtime.InteropServices.Marshall.GetLastWin32Error

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Event Logging Functions

Win32 function	Description	.NET Framework API
ClearEventLog	Clears the specified event log, and optionally saves the current copy of the log file to a backup file.	System.Diagnostics.EventLog.Clear
CloseEventLog	Closes a read handle to the specified event log.	System.Diagnostics.EventLog.Close
DeregisterEventSource	Closes a write handle to the specified event log.	System.Diagnostics.EventLog.DeleteEventSource
GetNumberOfEventLogRecords	Retrieves the number of records in the specified event log.	System.Diagnostics.EventLog.Entries.Count
GetOldestEventLogRecord	Retrieves the absolute record number of the oldest record in the specified event log.	System.Diagnostics.EventLogEntryCollection[0] System.Diagnostics.EventLogEntry.TimeWritten
NotifyChangeEventLog	Enables an application to receive notification when an event is written to the specified event log file.	System.Diagnostics.EventLog.EnableRaisingEvents
OpenBackupEventLog	Opens a handle to a backup event log.	System.Diagnostics.EventLog constructor
OpenEventLog	Opens a handle to an event log.	System.Diagnostics.EventLog constructor
ReadEventLog	Reads a whole number of entries from the specified event log.	System.Diagnostics.EventLogEntryCollection.CopyTo
RegisterEventSource	Retrieves a registered handle to an event log.	System.Diagnostics.EventLog.CreateEventSource
ReportEvent	Writes an entry at the end of the specified event log.	System.Diagnostics.EventLog.WriteEntry

Alphabetical Win32 Category List
Hierarchical Win32 Category List

File I/O Functions

Win32 function	Description	.NET Framework API
CopyFile	Copies an existing file to a new file.	Either of the following: System.IO.File.Copy IO.FileInfo.CopyTo
CreateDirectory	Creates a new directory.	Any of the following: System.IO.Directory.CreateDirectory System.IO.Directory.CreateSubdirectory System.IO.DirectoryInfo.Create
CreateFile	Creates or opens a file object.	System.IO.File class and System.IO.FileInfo class
DeleteFile	Deletes an existing file.	Any of the following: System.IO.Directory.Delete System.IO.DirectoryInfo.Delete System.IO.File.Delete System.IO.FileInfo.Delete
FileIOCompletionRoutine	An application-defined callback function used with ReadFileEx and WriteFileEx.	User defined.
FindClose	Closes the specified search handle.	See FindFirstFile and FindNextFile
FindCloseChangeNotification	Stops change notification handle monitoring.	System.IO.FileSystemWatcher.EnableRaisingEvents
FindFirstChangeNotification	Creates a change notification handle.	System.IO.FileSystemWatcher class
FindFirstFile	Searches a directory for a file whose name matches the specified file name.	Any of the following: System.IO.Directory.Exists System.IO.Directory.GetDirectories System.IO.Directory.GetFileSystemEntries System.IO.Directory.GetFiles System.IO.DirectoryInfo.Exists System.IO.DirectoryInfo.GetDirectories System.IO.DirectoryInfo.GetFileSystemInfos System.IO.DirectoryInfo.GetFiles System.IO.File.Exists System.IO.FileInfo.Exists
FindFirstFileEx	Searches a directory for a file whose name and attributes match the specified file name.	Same as FindFirstFile
FindNextChangeNotification	Requests that the operating system signal a change notification handle the next time it detects an appropriate change.	System.IO.FileSystemWatcher class
FindNextFile	Continues a file search.	Any of the following: System.IO.Directory.GetDirectories System.IO.Directory.GetFileSystemEntries System.IO.Directory.GetFiles System.IO.DirectoryInfo.GetDirectories System.IO.DirectoryInfo.GetFileSystemInfos System.IO.DirectoryInfo.GetFiles
FlushFileBuffers	Clears the buffers for the specified file and causes all buffered data to be written to the file.	System.IO.FileStream.Flush
GetBinaryType	Determines whether a file is executable.	System.IO.FileSystemInfo.Extension Note   Only manipulates strings; does not do a file-system check.
GetCurrentDirectory	Retrieves the current directory for the current process.	System.IO.Directory.GetCurrentDirectory
GetDriveType	Determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk, or network drive.	System.Management.ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"").Get System.Management.ManagementObject.Properties System.IO.DriveInfo.DriveType
GetFileAttributes	Retrieves attributes for a specified file or directory.	Any of the following: System.IO.Directory.GetAttributes System.IO.File.GetAttributes System.IO.FileSystemInfo.Attributes
GetFileAttributesEx	Retrieves attributes for a specified file or directory.	Any of the following: System.IO.Directory.GetAttributes System.IO.File.GetAttributes System.IO.FileSystemInfo.Attributes
GetFileInformationByHandle	Retrieves file information for a specified file.	System.IO.FileInfo properties
GetFileSize	Retrieves the size of a specified file.	Either of the following: System.IO.FileInfo.Length System.IO.FileStream.Length
GetFileSizeEx	Retrieves the size of a specified file.	Either of the following: System.IO.FileInfo.Length System.IO.FileStream.Length
GetFullPathName	Retrieves the full path and file name of a specified file.	Either of the following: System.IO.FileSystemInfo.FullName System.IO.Path.GetFullPath
GetTempFileName	Creates a name for a temporary file.	System.IO.Path.GetTempFileName
GetTempPath	Retrieves the path of the directory designated for temporary files.	System.IO.Path.GetTempPath
LockFile	Locks a region in an open file.	System.IO.FileStream.Lock
LockFileEx	Locks a region in an open file for shared or exclusive access.	System.IO.FileStream.Lock
MoveFile	Moves an existing file or a directory.	Any of the following: System.IO.Directory.Move System.IO.DirectoryInfo.MoveTo System.IO.File.Move System.IO.FileInfo.MoveTo
ReadDirectoryChangesW	Retrieves information describing the changes occurring within a directory.	System.IO.FileSystemWatcher class
ReadFile	Reads data from a file, starting at the specified position.	Any of the following: System.IO.FileStream.BeginRead/EndRead System.IO.FileStream.Read System.IO.FileStream.ReadByte
ReadFileEx	Reads data from a file asynchronously.	System.IO.FileStream.BeginRead/EndRead
RemoveDirectory	Deletes an existing empty directory.	Either of the following: System.IO.Directory.Delete System.IO.DirectoryInfo.Delete
SearchPath	Searches for the specified file.	Any of the following: System.IO.Directory.Exists System.IO.Directory.GetDirectories System.IO.Directory.GetFileSystemEntries System.IO.Directory.GetFiles System.IO.DirectoryInfo.Exists System.IO.DirectoryInfo.GetDirectories System.IO.DirectoryInfo.GetFileSystemInfos System.IO.DirectoryInfo.GetFiles System.IO.File.Exists System.IO.FileInfo.Exists
SetCurrentDirectory	Changes the current directory for the current process.	System.IO.Directory.SetCurrentDirectory
SetEndOfFile	Moves the end-of-file position for the specified file.	System.IO.FileStream.SetLength
SetFileAttributes	Sets the attributes for a file.	System.IO.File.SetAttributes
SetFilePointer	Moves the file pointer of an open file.	Either of the following: System.IO.FileStream.Position System.IO.FileStream.Seek
SetFilePointerEx	Moves the file pointer of an open file.	Either of the following: System.IO.FileStream.Position System.IO.FileStream.Seek
UnlockFile	Unlocks a previously locked region in an open file.	System.IO.FileStream.Unlock
UnlockFileEx	Unlocks a previously locked region in an open file.	System.IO.FileStream.Unlock
WriteFile	Writes data to a file.	Any of the following: System.IO.FileStream.BeginWrite and EndWrite System.IO.FileStream.Write System.IO.FileStream.WriteByte System.IO.BinaryWriter.Write
WriteFileEx	Writes data to a file asynchronously.	System.IO.FileStream.BeginWrite and EndWrite

Alphabetical Win32 Category List
Hierarchical Win32 Category List

File System Functions

Used with file systems:

Win32 function	Description	.NET Framework API
GetDiskFreeSpace	Retrieves information about the specified disk, including the amount of free space on the disk.	System.Management.ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"").Get System.Management.ManagementObject.Properties
GetDiskFreeSpaceEx	Retrieves information about the specified disk, including the amount of free space on the disk.	System.Management.ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"").Get System.Management.ManagementObject.Properties
GetLogicalDriveStrings	Fills a buffer with strings that specify valid drives in the system.	Either of the following: System.Environment.GetLogicalDrives System.IO.Directory.GetLogicalDrives

Used with an encrypted file system:

Win32 function	Description	.NET Framework API
DecryptFile	Decrypts an encrypted file or directory.	System.Security.Cryptography.CryptoStream.Read
EncryptFile	Encrypts a file or directory.	System.Security.Cryptography.CryptoStream.Write
FileEncryptionStatus	Retrieves the encryption status of the specified file.	System.IO.FileSystemInfo.Attributes

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Filled Shape Functions

Win32 function	Description	.NET Framework API
Chord	Draws an area bounded by an ellipse and a line segment.	System.Drawing.Graphics.DrawArc System.Drawing.Graphics.DrawLine
Ellipse	Draws an ellipse.	System.Drawing.Graphics.DrawEllipse System.Drawing.Graphics.FillEllipse
FillRect	Fills a rectangle using a brush.	System.Drawing.Graphics.FillRectangle
InvertRect	Inverts the color values of the pixels in a rectangle.	System.Windows.Forms.ControlPaint.DrawReversibleFrame System.Windows.Forms.ControlPaint.DrawReversibleLine
Pie	Draws a pie-shaped wedge bounded by an ellipse and two radials.	System.Drawing.Graphics.DrawPie System.Drawing.Graphics.FillPie
Polygon	Draws a polygon.	System.Drawing.Graphics.DrawPolygon System.Drawing.Graphics.FillPolygon
Rectangle	Draws a rectangle.	System.Drawing.Graphics.DrawRectangle System.Drawing.Graphics.FillRectangle
RoundRect	Draws a rectangle with rounded corners.	System.Drawing.Drawing2D.GraphicsPath.AddLines System.Drawing.Pen.LineJoin = System.Drawing.Pen.LineJoin.Round System.Drawing.Graphics.DrawPath System.Drawing.Graphics.FillPath

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Font and Text Functions

Win32 function	Description	.NET Framework API
AddFontMemResourceEx	Adds an embedded font to the system font table.	System.Drawing.Text.PrivateFontCollection.AddMemoryFont
AddFontResourceEx	Adds a private or non-enumerable font to the system font table.	System.Drawing.Text.PrivateFontCollection.AddFontFile
CreateFont	Creates a logical font.	System.Drawing.Font constructor
DrawText	Draws formatted text in a rectangle.	System.Drawing.Graphics.DrawString
DrawTextEx	Draws formatted text in a rectangle.	System.Drawing.Graphics.DrawString
EnumFontFamExProc	An application-defined callback function used with EnumFontFamiliesEx to process fonts.	System.Drawing.Text.InstalledFontCollection.Families
EnumFontFamiliesEx	Enumerates all fonts in the system with certain characteristics.	System.Drawing.Text.InstalledFontCollection.Families
ExtTextOut	Draws a character string.	System.Drawing.Graphics.DrawString
GetCharABCWidths	Gets the widths of consecutive characters from the TrueType font.	Get a Region[] for the characters: System.Drawing.Graphics.MeasureCharacterRanges; Determine the width of each Region: System.Drawing.Rectangle.Round(Region.GetBounds).Width
GetCharABCWidthsFloat	Gets the widths of consecutive characters from the current font.	Get a Region[] for the characters: System.Drawing.Graphics.MeasureCharacterRanges; Determine the width of each Region: System.Drawing.Region.GetBounds.Width
GetCharWidth32	Gets the widths of consecutive characters from the current font.	Get a Region[] for the characters: System.Drawing.Graphics.MeasureCharacterRanges; Determine the width of each Region: System.Drawing.Rectangle.Round(Region.GetBounds).Width
GetCharWidthFloat	Gets the fractional widths of consecutive characters from the current font.	Get a Region[] for the characters: System.Drawing.Graphics.MeasureCharacterRanges; Determine the width of each Region: System.Drawing.Region.GetBounds.Width
GetOutlineTextMetrics	Gets text metrics for TrueType fonts.	System.Drawing.Font properties
GetTabbedTextExtent	Computes the width and height of a character string, including tabs.	System.Drawing.Graphics.MeasureString
GetTextAlign	Gets the text-alignment setting for a device context.	System.Drawing.StringFormat.Alignment System.Drawing.StringFormat.LineAlignment
GetTextColor	Gets the text color for a device context.	System.Drawing.SolidBrush.Color
GetTextExtentPoint32	Computes the width and height of a string of text.	System.Drawing.Graphics.MeasureString
GetTextFace	Gets the name of the font that is selected into a device context.	System.Drawing.Font.Name
GetTextMetrics	Fills a buffer with the metrics for a font.	System.Drawing.Font properties
RemoveFontMemResourceEx	Removes a font whose source was embedded in a document from the system font table.	System.Drawing.Text.PrivateFontCollection.Dispose
RemoveFontResourceEx	Removes a private or non-enumerable font from the system font table.	System.Drawing.Text.PrivateFontCollection.Dispose
SetTextAlign	Sets the text-alignment flags for a device context.	System.Drawing.StringFormat.Alignment System.Drawing.StringFormat.LineAlignment
SetTextColor	Sets the text color for a device context.	Either of the following: System.Drawing.Brushes System.Drawing.SolidBrush.SolidBrush(Color)
TabbedTextOut	Writes a character string at a location, expanding tabs to specified values.	System.Drawing.Graphics.DrawString using System.Drawing.StringFormat.SetTabStops
TextOut	Writes a character string at a location.	System.Drawing.Graphics.DrawString

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Icon Functions

Win32 function	Description	.NET Framework API
CopyIcon	Copies an icon from another module.	System.Drawing.Icon.FromHandle
CreateIcon	Creates an icon with a specified size, color, and bit pattern.	System.Drawing.Icon constructor
DestroyIcon	Destroys an icon.	System.Drawing.Icon.Dispose
DrawIcon	Draws an icon.	System.Drawing.Graphics.DrawIcon
DuplicateIcon	Creates a duplicate of a specified icon.	System.Drawing.Icon.Clone
LoadIcon	Loads an icon from the executable file associated with an application.	System.Drawing.Icon constructor

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Input Method Editor Functions

Win32 function	Description	.NET Framework API
ImmAssociateContext	Associates the specified input context with the specified window.	Either of the following: System.Windows.Forms.Control.DefaultImeMode System.Windows.Forms.Control.ImeMode
ImmAssociateContextEx	Changes the association between the input method context and the specified window or its children.	Any of the following: System.Windows.Forms.Control.DefaultImeMode System.Windows.Forms.Control.ImeMode System.Windows.Forms.Control.ResetImeMode
ImmDisableIME	Disables the Input Method Editor.	System.Windows.Forms.Control.ImeMode = System.Windows.Forms.ImeMode.Disable
ImmGetContext	Retrieves the input context associated with the specified window.	System.Windows.Forms.Control.ImeMode

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Keyboard Accelerator Functions

Win32 function	Description	.NET Framework API
TranslateAccelerator	Processes accelerator keys for menu commands.	System.Windows.Forms.MenuItem.Shortcut

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Keyboard Input Functions

Win32 function	Description	.NET Framework API
ActivateKeyboardLayout	Sets the input locale identifier for the calling thread or the current process.	System.Windows.Forms.InputLanguage.CurrentInputLanguage
EnableWindow	Enables or disables mouse and keyboard input to the specified window or control.	System.Windows.Forms.Control.Enabled
GetActiveWindow	Retrieves the window handle to the active window attached to the calling thread's message queue.	System.Windows.Forms.Form.ActiveForm
GetFocus	Retrieves the handle to the window that has the keyboard focus.	System.Windows.Forms.Control.Controls[].Focused
GetKeyboardLayout	Retrieves the active input locale identifier for the specified thread.	System.Windows.Forms.InputLanguage.CurrentInputLanguage
GetKeyboardLayoutList	Retrieves the input locale identifiers corresponding to the current set of input locales in the system.	System.Windows.Forms.InputLanguage.InstalledInputLanguages
GetKeyboardLayoutName	Retrieves the name of the active input locale identifier.	System.Windows.Forms.InputLanguage.LayoutName
GetKeyNameText	Retrieves a string that represents the name of a key.	System.Windows.Forms.KeyEventArgs.KeyCode.ToString
IsWindowEnabled	Determines whether the specified window is enabled for mouse and keyboard input.	System.Windows.Forms.Form.Enabled
SetActiveWindow	Activates a window.	System.Windows.Forms.Activate
SetFocus	Sets the keyboard focus to the specified window.	System.Windows.Forms.Form.Focus
ToAscii	Translates the specified virtual-key code and keyboard state to the corresponding character or characters.	System.Windows.Forms.KeyPressEventArgs.KeyChar
ToUnicode	Translates the specified virtual-key code and keyboard state to the corresponding Unicode character or characters.	System.Windows.Forms.KeyPressEventArgs.KeyChar

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Line and Curve Functions

Win32 function	Description	.NET Framework API
AngleArc	Draws a line segment and an arc.	System.Drawing.Graphics.DrawLine System.Drawing.Graphics.DrawArc
Arc	Draws an elliptical arc.	System.Drawing.Graphics.DrawArc
ArcTo	Draws an elliptical arc.	System.Drawing.Graphics.DrawArc
LineTo	Draws a line from the current position up to, but not including, the specified point.	System.Drawing.Graphics.DrawLine
PolyBezier	Draws one or more B&x00E9;zier curves.	System.Drawing.Graphics.DrawBeziers
Polyline	Draws a series of line segments by connecting the points in the specified array.	System.Drawing.Graphics.DrawLines

Alphabetical Win32 Category List
Hierarchical Win32 Category List

List Box Functions

Win32 function	Description	.NET Framework API
DlgDirList	Replaces the contents of a list box with the names of the subdirectories and files in a specified directory.	System.Windows.Forms.ListBox.Items.AddRange(System.IO.Directory.GetFileSystemEntries)
DlgDirSelectEx	Retrieves the current selection from a single-selection list box.	System.Windows.Forms.ListBox.SelectedItem
GetListBoxInfo	Retrieves information about the specified list box.	System.Windows.Forms.ListBox properties

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Memory Management Functions

Memory management functions:

Win32 function	Description	.NET Framework API
GlobalMemoryStatus	Obtains information about the system's current usage of both physical and virtual memory.	System.Management.ManagementClass("Win32_OperatingSystem") System.Management.ManagementClass.GetInstances System.Management.ManagementObject.Properties
GlobalMemoryStatusEx	Obtains information about the system's current usage of both physical and virtual memory.	System.Management.ManagementClass("Win32_OperatingSystem") System.Management.ManagementClass.GetInstances System.Management.ManagementObject.Properties

Global and local functions:

Win32 function	Description	.NET Framework API
GlobalAlloc	Allocates the specified number of bytes from the heap.	System.Runtime.InteropServices.Marshall.AllocHGlobal
GlobalFree	Frees the specified global memory object.	System.Runtime.InteropServices.Marshall.FreeHGlobal
GlobalReAlloc	Changes the size or attributes of a specified global memory object.	System.Runtime.InteropServices.Marshall.ReAllocHGlobal
LocalAlloc	Allocates the specified number of bytes from the heap.	System.Runtime.InteropServices.Marshall.AllocHGlobal
LocalFree	Frees the specified local memory object.	System.Runtime.InteropServices.Marshall.FreeHGlobal
LocalReAlloc	Changes the size or the attributes of a specified local memory object.	System.Runtime.InteropServices.Marshall.ReAllocHGlobal

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Menu Functions

Win32 function	Descriptions	.NET Framework API
AppendMenu	Appends an item to various menus and submenus.	System.Windows.Forms.Menu.MenuItemCollection.Add
CheckMenuItem	Checks or clears a menu item.	System.Windows.Forms.MenuItem.Checked
CheckMenuRadioItem	Checks a specified menu item and makes it a radio item.	System.Windows.Forms.MenuItem.RadioCheck
CreateMenu	Creates a menu.	Any of the following: System.Windows.Forms.ContextMenu constructor System.Windows.Forms.MainMenu constructor System.Windows.Forms.Menu.MenuItemCollection constructor
CreatePopupMenu	Creates a drop-down menu, submenu, or shortcut menu.	Either of the following: System.Windows.Forms.ContextMenu constructor System.Windows.Forms.Menu.MenuItemCollection constructor
DeleteMenu	Deletes a menu item.	System.Windows.Forms.Menu.MenuItemCollection.Remove
DestroyMenu	Deletes a menu.	System.Windows.Forms.Menu.Dispose
EnableMenuItem	Enables, disables, or grays a menu item.	System.Windows.Forms.MenuItem.Enabled
GetMenu	Gets a handle to the menu.	System.Windows.Forms.Form.Menu.Handle
GetMenuBarInfo	Gets information about a menu bar.	System.Windows.Forms.Form.Menu
GetMenuCheckMarkDimensions	Returns the dimensions of the default check-mark bitmap.	System.Windows.Forms.SystemInformation.MenuCheckSize
GetMenuDefaultItem	Gets the default menu item on a menu.	System.Windows.Forms.MenuItem.DefaultItem
GetMenuInfo	Gets information about a menu.	System.Windows.Forms.MenuItem properties
GetMenuItemCount	Gets the number of items in a menu.	System.Windows.Forms.Menu.MenuItemCollection.Count
GetMenuItemID	Gets the identifier of a menu item.	System.Windows.Forms.MenuItem.MenuID
GetMenuItemInfo	Gets information about a menu item.	System.Windows.Forms.MenuItem properties
GetMenuItemRect	Gets the bounding rectangle for a menu item.	System.Windows.Forms.MenuItem.DrawItem System.Windows.Forms.DrawItemEventArgs.Bounds
GetMenuState	Gets the menu flags associated with a menu item.	System.Windows.Forms.MenuItem.Break System.Windows.Forms.MenuItem.BarBreak System.Windows.Forms.MenuItem.Checked System.Windows.Forms.MenuItem.Enabled System.Windows.Forms.MenuItem.OwnerDraw
GetMenuString	Copies the text string of a menu item into a buffer.	System.Windows.Forms.MenuItem.Text
GetSubMenu	Gets a handle to the drop-down menu or submenu activated by a menu item.	System.Windows.Forms.Menu.MenuItems[].Handle
InsertMenu	Inserts a new menu item into a menu.	System.Windows.Forms.Menu.MenuItemCollection.Add
InsertMenuItem	Inserts a new menu item in a menu.	System.Windows.Forms.Menu.MenuItemCollection.Add
ModifyMenu	Changes an existing menu item.	System.Windows.Forms.MenuItem.Break System.Windows.Forms.MenuItem.BarBreak System.Windows.Forms.MenuItem.Checked System.Windows.Forms.MenuItem.Enabled System.Windows.Forms.MenuItem.OwnerDraw System.Windows.Forms.MenuItem.Text
RemoveMenu	Deletes a menu item or detaches a submenu from a menu.	System.Windows.Forms.Menu.MenuItemCollection.Remove
SetMenu	Assigns a new menu to a window.	System.Windows.Forms.Form.Menu
SetMenuDefaultItem	Sets the default menu item for a menu.	System.Windows.Forms.MenuItem.DefaultItem
SetMenuInfo	Sets information for a menu.	System.Windows.Forms.MenuItem properties
SetMenuItemBitmaps	Associates a bitmap with a menu item.	System.Windows.Forms.MenuItem.DrawItem
SetMenuItemInfo	Changes information about a menu item.	System.Windows.Forms.MenuItem properties
TrackPopupMenu	Displays a shortcut menu at a location and tracks item selection on a menu.	System.Windows.Forms.ContextMenu.Show

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Message and Message Queue Functions

Win32 function	Description	.NET Framework API
GetMessagePos	Retrieves the position of the cursor for the last message retrieved by GetMessage.	Inside an event handler: System.Windows.Forms.Windows.Forms.Control.MousePosition
PostQuitMessage	Indicates to the system that a thread has made a request to terminate (quit).	System.Windows.Forms.Application.ExitThread
SendMessage	Sends the specified message to a window or windows.	Any of the following: System.Windows.Forms.Control.DefWndProc System.Windows.Forms.Control.WndProc System.Windows.Forms.Form.DefWndProc System.Windows.Forms.Form.WndProc

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Metafile Functions

Win32 function	Description	.NET Framework API
CopyEnhMetaFile	Copies the contents of an enhanced-format metafile to a specified file.	System.Drawing.Imaging.Metafile.Save
CreateEnhMetaFile	Creates a device context for an enhanced-format metafile.	System.Drawing.Imaging.Metafile constructor
DeleteEnhMetaFile	Deletes an enhanced-format metafile or an enhanced-format metafile handle.	System.Drawing.Imaging.Metafile.Dispose
EnhMetaFileProc	An application-defined callback function used with EnumEnhMetaFile.	System.Drawing.Graphics.EnumerateMetafileProc
EnumEnhMetaFile	Enumerates the records within an enhanced-format metafile.	System.Drawing.Graphics.EnumerateMetafile
GdiComment	Copies a comment from a buffer into a specified enhanced-format metafile.	System.Drawing.Graphics.AddMetafileComment
GetEnhMetaFile	Creates a handle that identifies the enhanced-format metafile stored in the specified file.	System.Drawing.Imaging.Metafile constructor
GetEnhMetaFileBits	Retrieves the contents of the specified enhanced-format metafile and copies it into a buffer.	System.Drawing.Imaging.Metafile.Save
GetEnhMetaFileHeader	Retrieves the record containing the header for the specified enhanced-format metafile.	System.Drawing.Imaging.Metafile.GetMetafileHeader
GetEnhMetaFilePaletteEntries	Retrieves optional palette entries from the specified enhanced metafile.	System.Drawing.Imaging.Metafile.Palette.Entries
GetWinMetaFileBits	Converts the enhanced-format records from a metafile into Windows-format records.	System.Drawing.Imaging.Metafile.Save
PlayEnhMetaFile	Displays the picture stored in the specified enhanced-format metafile.	System.Drawing.Graphics.DrawImage
PlayEnhMetaFileRecord	Plays an enhanced-metafile record by executing the graphics device interface functions identified by the record.	System.Drawing.Imaging.Metafile.PlayRecord System.Drawing.Imaging.PlayRecordCallback
SetEnhMetaFileBits	Creates a memory-based enhanced-format metafile from the specified data.	System.Drawing.Imaging.Metafile.Save
SetWinMetaFileBits	Converts a metafile from the older Windows format to the new enhanced format.	System.Drawing.Imaging.Metafile.Save

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Mouse Input Functions

Win32 function	Description	.NET Framework API
GetDoubleClickTime	Gets the double-click time for the mouse.	System.Windows.Forms.SystemInformation.DoubleClickTime
mouse_event	Synthesizes mouse motion and button clicks.	System.Windows.Forms.MouseEventArgs
ReleaseCapture	Releases the mouse capture and restores mouse input processing.	System.Windows.Forms.Control.Capture
SetCapture	Sets the mouse capture to a window.	System.Windows.Forms.Control.Capture
TrackMouseEvent –or– _TrackMouseEvent	Posts messages when a mouse leaves a window or hovers over a window.	System.Windows.Forms.Control.OnMouseLeave System.Windows.Forms.Control.OnMouseHover

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Multiple Display Monitor Functions

Win32 function	Description	.NET Framework API
GetMonitorInfo	Retrieves information about a display monitor.	System.Windows.Forms.Screen.Bounds System.Windows.Forms.Screen.Primary System.Windows.Forms.Screen.WorkingArea
MonitorFromPoint	Retrieves a handle to the display monitor that contains a specified point.	System.Windows.Forms.Screen.FromPoint
MonitorFromRect	Retrieves a handle to the display monitor that has the largest area of intersection with a specified rectangle.	System.Windows.Forms.Screen.FromRectangle
MonitorFromWindow	Retrieves a handle to the display monitor that has the largest area of intersection with the bounding rectangle of a specified window.	System.Windows.Forms.Screen.FromHandle

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Multiple-Document Interface Functions

Win32 function	Description	.NET Framework API
CreateMDIWindow	Creates a multiple-document interface (MDI) child window.	System.Windows.Forms.Form constructor System.Windows.Forms.Form.AutoScroll System.Windows.Forms.Form.DesktopBounds System.Windows.Forms.Form.MdiParent System.Windows.Forms.Form.WindowState
TranslateMDISysAccel	Processes accelerator keystrokes for window menu commands of the MDI child windows associated with the specified MDI client window.	Keyboard events for MDI children are automatically translated.

Alphabetical Win32 Category List
Hierarchical Win32 Category List

National Language Functions

Win32 function	Description	.NET Framework API
ConvertDefaultLocale	Converts a default locale value to an actual locale identifier.	System.Globalization.CultureInfo.CurrentCulture System.Globalization.CultureInfo.InstalledUICulture
EnumCalendarInfo	Enumerates calendar information for a specified locale.	Access the System.Globalization.CultureInfo.DateTimeFormat property to get a System.Globalization.DateTimeFormatInfo object, and then access its properties: System.Globalization.DateTimeFormatInfo.AbbreviatedDayNames System.Globalization.DateTimeFormatInfo.AbbreviatedMonthNames System.Globalization.DateTimeFormatInfo.DayNames System.Globalization.DateTimeFormatInfo.LongDatePattern System.Globalization.DateTimeFormatInfo.MonthNames System.Globalization.DateTimeFormatInfo.ShortDatePattern
EnumCalendarInfoEx	Enumerates calendar information for a specified locale.	Iterate through the calendars: System.Globalization.CultureInfo.DateTimeFormat.Calendar = System.Globalization.CultureInfo.OptionalCalendars[i]
EnumCalendarInfoProc	An application-defined function used with EnumCalendarInfo.	Same as EnumCalendarInfo
EnumCalendarInfoProcEx	An application-defined function used with EnumCalendarInfoEx.	Same as EnumCalendarInfoEx
EnumCodePagesProc	An application-defined function used with EnumSystemCodePages.	Same as EnumSystemCodePages
EnumDateFormats	Enumerates the long or short date formats that are available for a specified locale.	System.DateTime.GetDateTimeFormats(System.Globalization.CultureInfo)
EnumDateFormatsEx	Enumerates the long or short date formats that are available for a specified locale, including date formats for any alternate calendars.	Iterate through the calendars: System.Globalization.CultureInfo.DateTimeFormat.Calendar = System.Globalization.CultureInfo.OptionalCalendars[i]; System.DateTime.GetDateTimeFormats(System.Globalization.CultureInfo)
EnumDateFormatsProc	An application-defined function used with EnumDateFormats.	Same as EnumDateFormats
EnumDateFormatsProcEx	An application-defined function used with EnumDateFormatsEx.	Same as EnumDateFormatsEx
EnumGeoInfoProc	A callback function used with EnumSystemGeoID.	Same as EnumSystemGeoID
EnumLocalesProc	An application-defined function used with EnumSystemLocales.	Same as EnumSystemLocales
EnumSystemCodePages	Enumerates the code pages that are either installed on or supported by a system.	System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.AllCultures) returns an array of CultureInfo The various code page properties of System.Globalization.CultureInfo.TextInfo
EnumSystemGeoID	Enumerates all GeoIDs on the system.	Retrieve an array of CultureInfo by calling System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.AllCultures), and then access the following CultureInfo properties: System.Globalization.CultureInfo.ThreeLetterISOLanguageName System.Globalization.CultureInfo.ThreeLetterWindowsLanguageName System.Globalization.CultureInfo.TwoLetterISOLanguageName
EnumSystemLocales	Enumerates the locales that are either installed on or supported by a system.	System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.SpecificCultures) System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.InstalledWin32Cultures)
EnumTimeFormats	Enumerates the time formats that are available for a specified locale.	System.DateTime.GetDateTimeFormats
EnumTimeFormatsProc	An application-defined function used with EnumTimeFormats.	Same as EnumTimeFormats
GetACP	Retrieves the current ANSI code-page identifier for the system.	System.Globalization.CultureInfo.InstalledUICulture.TextInfo.ANSICodePage
GetCalendarInfo	Retrieves information about a calendar.	System.Globalization.CultureInfo.DateTimeFormat
GetCurrencyFormat	Formats a number string as a currency string for a specified locale.	Create a System.Globalization.CultureInfo object using the constructor, specifying either the culture name or identifier (or use the current culture of the application available on System.Threading.Thread.CurrentCulture); call System.Convert.ToDouble(str) where str is the numeric string you want to format; and then call System.Double.ToString("C", ci) (or System.Double.ToString("C") to use the current culture), where C is the standard currency format specifier and ci is the CultureInfo object you created Note    For more information on the variety of formatting options available in the .NET Framework, see System.String.Format.
GetDateFormat	Formats a date as a date string for a specified locale.	System.DateTime(…, CultureInfo(LCID).Calendar).ToString
GetLocaleInfo	Retrieves information about a locale.	System.Globalization.CultureInfo.DateTimeFormat System.Globalization.CultureInfo.NumberFormat System.Globalization.CultureInfo.TextInfo
GetNumberFormat	Formats a number string as a number string customized for a specified locale.	Create a System.Globalization.CultureInfo object using the constructor, specifying either the culture name or identifier (or use the current culture of the application available on System.Threading.Thread.CurrentCulture); call System.Convert.ToDouble(str). where str is the numeric string you want to format; and then call System.Double.ToString("N", ci) (or System.Double.ToString("N") to use the current culture), where N is the standard number format specifier and ci is the CultureInfo object you created Note    For more information on the variety of formatting options available in the .NET Framework, see System.String.Format.
GetOEMCP	Retrieves the current original equipment manufacturer (OEM) code-page identifier for the system.	System.Globalization.CultureInfo.InstalledUICulture.TextInfo.OEMCodePage
GetSystemDefaultLangID	Retrieves the language identifier of the system locale.	System.Globalization.CultureInfo.InstalledUICulture
GetSystemDefaultLCID	Retrieves the system default locale identifier.	System.Globalization.CultureInfo.InstalledUICulture
GetSystemDefaultUILanguage	Retrieves the language identifier for the default language of the system.	System.Globalization.CultureInfo.InstalledUICulture
GetThreadLocale	Retrieves the current locale for the calling thread.	Either of the following: System.Globalization.CultureInfo.CurrentCulture System.Threading.Thread.CurrentCulture
GetTimeFormat	Formats time as a time string for a specified locale.	System.DateTime(…, CultureInfo(LCID).Calendar).ToString
GetUserDefaultLangID	Retrieves the language identifier of the current user locale.	System.Globalization.CultureInfo.CurrentCulture
GetUserDefaultLCID	Retrieves the user default–locale identifier.	System.Globalization.CultureInfo.CurrentCulture
GetUserDefaultUILanguage	Retrieves the language identifier for the current user language.	System.Globalization.CultureInfo.CurrentUICulture
GetUserGeoID	Gets information about the user's location.	System.Globalization.RegionInfo
IsValidCodePage	Determines whether a specified code page is valid.	Use an array of CultureInfo objects returned by: System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.AllCultures) Compare to the code page properties of System.Globalization.CultureInfo.TextInfo
IsValidLocale	Determines whether a specified locale identifier is valid.	try{ System.Globalization.CultureInfo(LCID) }
LCMapString	Maps one character string to another, performing a specified locale-dependent transformation.	System.Globalization.SortKey
SetCalendarInfo	Sets an item of locale information for a calendar.	System.Globalization.CultureInfo.DateTimeFormat
SetLocaleInfo	Sets an item of locale information.	System.Globalization.CultureInfo.DateTimeFormat System.Globalization.CultureInfo.NumberFormat
SetThreadLocale	Sets the current locale for the calling thread.	System.Threading.Thread.CurrentCulture Note   Sets langid only.

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Painting and Drawing Functions

Win32 function	Description	.NET Framework API
BeginPaint	Prepares a window for painting.	System.Windows.Forms.Form.OnPaint
DrawFrameControl	Draws a frame control.	System.Window.Forms.ControlPaint
GetBkColor	Returns the background color for a device context.	System.Windows.Forms.Form.BackColor
GetBkMode	Returns the background mix mode for a device context.	System.Windows.Forms.Form.GetStyle(ControlStyles.Opaque)
GetUpdateRect	Gets the coordinates of the smallest rectangle that encloses the update region of a window.	System.Windows.Forms.PaintEventArgs.ClipRectangle
GetWindowDC	Gets the device context for a window, including title bar, menus, and scroll bars.	Any of the following: System.Drawing.Graphics.FromHwnd(Windows.Forms.Control.Handle) System.Windows.Forms.Control.CreateGraphics.GetHdc System.Windows.Forms.PaintEventArgs.Graphics.GetHdc
GetWindowRgn	Gets a copy of the window region of a window.	System.Windows.Forms.Control.Region
GrayString	Draws gray text at a location.	System.Drawing.Graphics.DrawString(…, Drawing.Brushes.Gray, …)
InvalidateRect	Adds a rectangle to the update region of a window.	System.Windows.Forms.Control.Invalidate
InvalidateRgn	Invalidates the client area within a region.	System.Windows.Forms.Control.Invalidate(System.Windows.Forms.Form.ClientRectangle)
RedrawWindow	Updates a region in the client area of a window.	System.Windows.Forms.Control.Update
SetBkColor	Sets the background to a color value.	System.Windows.Forms.Form.BackColor
SetBkMode	Sets the background mix mode of a device context.	System.Windows.Forms.Form.SetStyle(System.Windows.Forms.ControlStyles.Opaque, System.Boolean)
SetWindowRgn	Sets the window region of a window.	System.Windows.Forms.Control.Region
UpdateWindow	Updates the client area of a window.	System.Windows.Forms.Control.Update

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Path Functions

Win32 function	Description	.NET Framework API
CloseFigure	Closes an open figure in a path.	System.Drawing.Drawing2D.GraphicsPath.CloseFigure
FillPath	Closes any open figures in the current path and fills the interior of the path by using the current brush and polygon-filling mode.	System.Drawing.Graphics.FillPath System.Drawing.Drawing2D.GraphicsPath.CloseFigures
FlattenPath	Transforms any curves in the path that is selected into the current device context, turning each curve into a sequence of lines.	System.Drawing.Drawing2D.GraphicsPath.Flatten
GetMiterLimit	Retrieves the miter limit for the specified device context.	System.Drawing.Pen.MiterLimit
GetPath	Retrieves the coordinates defining the endpoints of lines and the control points of curves found in the path that is selected into the specified device context.	System.Drawing.Drawing2D.GraphicsPath.PathData
PathToRegion	Creates a region from the path that is selected into the specified device context.	System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
SetMiterLimit	Sets the limit for the length of miter joins for the specified device context.	System.Drawing.Pen.MiterLimit
StrokeAndFillPath	Closes any open figures in a path, strokes the outline of the path by using the current pen, and fills its interior by using the current brush.	System.Drawing.Graphics.DrawPath System.Drawing.Graphics.FillPath System.Drawing.Drawing2D.GraphicsPath.CloseFigures
StrokePath	Renders the specified path by using the current pen.	System.Drawing.Graphics.DrawPath
WidenPath	Redefines the current path as the area that would be painted if the path were stroked using the pen currently selected into the given device context.	System.Drawing.Drawing2D.GraphicsPath.Widen

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Pen Functions

Win32 function	Description	.NET Framework API
CreatePen	Creates a logical pen that has the specified style, width, and color.	System.Drawing.Pen constructor
ExtCreatePen	Creates a logical cosmetic or geometric pen that has the specified style, width, and brush attributes.	System.Drawing.Pen constructor

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Performance Monitoring Functions

Win32 function	Description	.NET Framework API
PdhAddCounter	Initializes a counter structure for the specified counter in the specified query.	System.Diagnostics.PerformanceCounter constructor
PdhCalculateCounterFromRawValue	Computes the current value of a counter using the raw counter data passed in the parameter list.	System.Diagnostics.CounterSample.Calculate
PdhCloseLog	Closes the specified log file.	System.Diagnostics.EventLog.Close
PdhCloseQuery	Closes all counters contained in the specified query, closes all handles related to the query, and frees all memory associated with the query.	System.Diagnostics.PerformanceCounterCategory.Delete
PdhCollectQueryData	Collects the current raw data value for all counters in the specified query and updates the status code of each counter.	System.Diagnostics.PerformanceCounterCategory.ReadCategory
PdhEnumObjectItems	Returns the available counters and instances provided by the specified object on the specified computer.	System.Diagnostics.PerformanceCounterCategory.GetCounters System.Diagnostics.PerformanceCounterCategory.GetInstanceNames
PdhEnumObjects	Returns a list of objects available on the specified computer.	System.Diagnostics.PerformanceCounterCategory.GetCategories
PdhFormatFromRawValue	Converts one raw performance data value to the specified format or two raw performance data values if the format conversion is time-based.	System.Diagnostics.CounterSample.Calculate
PdhGetCounterInfo	Retrieves information about a counter, such as data size, counter type, path, and user-supplied data values.	System.Diagnostics.PerformanceCounter properties
PdhGetCounterTimeBase	Returns the time base of the specified counter.	System.Diagnostics.CounterSample.CounterFrequency
PdhGetFormattedCounterValue	Returns the current value of a specified counter in the format requested by the caller.	System.Diagnostics.PerformanceCounter.NextValue
PdhGetRawCounterArray	Returns an array of raw values from the specified counter.	System.Diagnostics.PerformanceCounterCategory.ReadCategory
PdhGetRawCounterValue	Returns the current raw value of the counter.	System.Diagnostics.PerformanceCounter.NextSample Note   System.Diagnostics.InstanceData holds the raw data.
PdhMakeCounterPath	Creates a full counter path using the members specified in the structure passed in the parameter list.	All of the following: System.Diagnostics.PerformanceCounter.MachineName System.Diagnostics.PerformanceCounter.CategoryName System.Diagnostics.PerformanceCounter.InstanceName System.Diagnostics.PerformanceCounter.CounterName
PdhOpenLog	Opens the specified log file.	System.Diagnotics.EventLog constructor Note   Must explicitly handle writing to the log file.
PdhOpenQuery	Creates and initializes a unique query structure that is used to manage the collection of performance data.	System.Diagnostics.PerformanceCounterCategory constructor
PdhValidatePath	Validates that the specified counter is present on the computer that is specified in the counter path.	Either of the following: System.Diagnostics.PerformanceCounterCategory.Exists System.Diagnostics.PerformanceCounterCategory.InstanceExists

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Printing Functions

Functions used to print:

Win32 function	Description	.NET Framework API
AbortDoc	Stops the current print job and erases everything drawn since the last call to StartDoc.	System.Drawing.Printing.PrintPageEventArgs.Cancel
DeviceCapabilities	Retrieves the capabilities of a printer device driver.	System.Drawing.Printing.PrinterSettings.PrinterName System.Drawing.Printing.PrinterSettings properties
EndDoc	Ends a print job.	Either of the following: System.Drawing.Printing.PrintDocument.OnEndPrint System.Drawing.Printing.PrintController.OnEndPrint
EndPage	Notifies the device that the application has finished writing to a page.	System.Drawing.Printing.PrintController.OnEndPage
StartDoc	Starts a print job.	System.Drawing.Printing.PrintDocument.Print System.Drawing.Printing.PrintDocument.OnBeginPrint System.Drawing.Printing.PrintController.OnStartPrint
StartPage	Prepares the printer driver to accept data.	System.Drawing.Printing.PrintDocument.OnQueryPageSettings System.Drawing.Printing.PrintController.OnStartPage System.Drawing.Printing.PrintDocument.OnPrintPage

Functions used to access the print spooler:

Win32 function	Description	.NET Framework API
DocumentProperties	Retrieves or modifies printer initialization information or displays a printer-configuration property sheet for the specified printer.	System.Windows.Forms.PageSetupDialog System.Windows.Forms.PrintDialog
EndPagePrinter	Notifies the print spooler that the application is at the end of a page in a print job.	System.Drawing.Printing.PrintPageEventArgs.HasMorePages
EnumForms	Enumerates the forms supported by the specified printer.	System.Drawing.Printing.PrinterSettings.PaperSizes
EnumPrinters	Enumerates available printers, print servers, domains, or print providers.	System.Drawing.Printing.PrinterSettings.InstalledPrinters
GetDefaultPrinter	Retrieves the printer name of the default printer for the current user on the local computer.	System.Drawing.Printing.PrinterSettings constructor System.Drawing.Printing.PrinterSettings.PrinterName
GetForm	Retrieves information about a specified form.	System.Drawing.Printing.PrinterSettings.PaperSizes[]
GetPrinter	Retrieves information about a specified printer.	System.Drawing.Printing.PrinterSettings.PrinterName System.Drawing.Printing.PrinterSettings properties
PrinterProperties	Displays a printer-properties property sheet for the specified printer.	System.Windows.Forms.PageSetupDialog System.Windows.Forms.PrintDialog
SetPrinter	Sets the data for a specified printer or sets the state of the specified printer by pausing printing, resuming printing, or clearing all print jobs.	System.Drawing.Printing.PrinterSettings.PrinterName System.Drawing.Printing.PrinterSettings properties

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Process and Thread Functions

Functions used with processes:

Win32 function	Description	.NET Framework API
CreateProcess	Creates a new process and its primary thread.	System.Diagnostics.Process constructor System.Diagnostics.Process.Start
ExitProcess	Ends a process and all its threads.	System.Diagnostics.Process.CloseMainWindow
GetCommandLine	Retrieves the command-line string for the current process.	Either of the following: System.Environment.CommandLine System.Diagnostics.ProcessStartInfo.Arguments
GetCurrentProcess	Retrieves a pseudo handle for the current process.	System.Diagnostics.Process.Handle
GetCurrentProcessId	Retrieves the process identifier of the calling process.	System.Diagnostics.Process.Id
GetEnvironmentStrings	Retrieves the environment block for the current process.	System.Diagnostics.ProcessStartInfo.EnvironmentVariables
GetEnvironmentVariable	Retrieves the value of the specified variable from the environment block of the calling process.	System.Diagnostics.ProcessStartInfo.EnvironmentVariables[]
GetExitCodeProcess	Retrieves the termination status of the specified process.	System.Diagnostics.Process.ExitCode
GetPriorityClass	Retrieves the priority class for the specified process.	System.Diagnostics.Process.PriorityClass
GetProcessAffinityMask	Retrieves a process affinity mask for the specified process and the system affinity mask for the system.	System.Diagnostics.Process.ProcessorAffinity
GetProcessPriorityBoost	Retrieves the priority boost control state of the specified process.	System.Diagnostics.Process.PriorityBoostEnabled
GetProcessTimes	Retrieves timing information for the specified process.	System.Diagnostics.Process.ExitTime System.Diagnostics.Process.PrivilegedProcessorTime System.Diagnostics.Process.StartTime System.Diagnostics.Process.TotalProcessorTime System.Diagnostics.Process.UserProcessorTime
GetProcessWorkingSetSize	Retrieves the minimum and maximum working set sizes of the specified process.	System.Diagnostics.Process.MinWorkingSet System.Diagnostics.Process.MaxWorkingSet
GetStartupInfo	Retrieves the contents of the STARTUPINFO structure that was specified when the calling process was created.	System.Diagnostics.Process.StandardError System.Diagnostics.Process.StandardInput System.Diagnostics.Process.StandardOutput System.Diagnostics.Process.StartInfo.WindowStyle
OpenProcess	Opens an existing process object.	System.Diagnostics.Process.GetProcessById
SetEnvironmentVariable	Sets the value of an environment variable for the current process.	System.Diagnostics.ProcessStartInfo.EnvironmentVariables[]
SetPriorityClass	Sets the priority class for the specified process.	System.Diagnostics.Process.PriorityClass
SetProcessAffinityMask	Sets a processor affinity mask for the threads of a specified process.	System.Diagnostics.Process.ProcessorAffinity
SetProcessPriorityBoost	Disables the ability of the system to temporarily boost the priority of the threads of the specified process.	System.Diagnostics.Process.PriorityBoostEnabled
SetProcessWorkingSetSize	Sets the minimum and maximum working set sizes for the specified process.	System.Diagnostics.Process.MaxWorkingSet System.Diagnostics.Process.MinWorkingSet
TerminateProcess	Terminates the specified process and all of its threads.	System.Diagnostics.Process.Kill

Functions used with threads:

Win32 function	Description	.NET Framework API
CreateThread	Creates a thread to execute within the virtual address space of the calling process.	System.Threading.Thread constructor System.Threading.Thread.Start
GetCurrentThread	Retrieves a pseudo handle for the current thread.	System.Threading.Thread.CurrentThread
GetCurrentThreadId	Retrieves the thread identifier of the calling thread.	Either of the following: System.AppDomain.GetCurrentThreadId System.Diagnostics.ProcessThread.Id
GetThreadPriority	Retrieves the priority value for the specified thread.	Either of the following: System.Diagnostics.ProcessThread.PriorityLevel System.Threading.Thread.Priority
GetThreadPriorityBoost	Retrieves the priority boost control state of the specified thread.	System.Diagnostics.ProcessThread.PriorityBoostEnabled
GetThreadTimes	Retrieves timing information for the specified thread.	System.Diagnostics.ProcessThread.PrivilegedProcessorTime System.Diagnostics.ProcessThread.StartTime System.Diagnostics.ProcessThread.TotalProcessorTime System.Diagnostics.ProcessThread.UserProcessorTime
ResumeThread	Decrements the suspend count for a thread.	System.Threading.Thread.Resume
SetThreadAffinityMask	Sets a processor affinity mask for the specified thread.	System.Diagnostics.ProcessThread.ProcessorAffinity
SetThreadIdealProcessor	Specifies a preferred processor for a thread.	System.Diagnostics.ProcessThread.IdealProcessor
SetThreadPriority	Sets the priority value for the specified thread.	Either of the following: System.Diagnostics.ProcessThread.PriorityLevel System.Threading.Thread.Priority
SetThreadPriorityBoost	Enables or disables the ability of the system to temporarily boost the priority of a thread.	System.Diagnostics.ProcessThread.PriorityBoostEnabled
Sleep	Suspends the execution of the current thread for a specified interval.	System.Threading.Thread.Sleep
SuspendThread	Suspends the specified thread.	System.Threading.Thread.Suspend
SwitchToThread	Causes the calling thread to yield execution to another thread that is ready to run on the current processor.	System.Threading.Thread.Sleep(0)
TerminateThread	Terminates a thread.	System.Threading.Thread.Abort
ThreadProc	An application-defined function that serves as the starting address for a thread.	See System.Threading.ThreadStart delegate
TlsAlloc	Allocates a thread local storage (TLS) index.	System.Threading.Thread.AllocateNamedDataSlot
TlsFree	Releases a TLS index.	System.Threading.Thread.FreeNamedDataSlot
TlsGetValue	Retrieves the value in the calling thread's TLS slot for a specified TLS index.	System.Threading.Thread.GetData
TlsSetValue	Stores a value in the calling thread's TLS slot for a specified TLS index.	System.Threading.Thread.SetData
WaitForInputIdle	Waits until the specified process is waiting for user input with no input pending or until the time-out interval has elapsed.	System.Diagnostics.Process.WaitForInputIdle

Functions used in thread pooling:

Win32 function	Description	.NET Framework API
BindIoCompletionCallback	Binds the specified file handle to the I/O completion port for the thread pool.	System.Threading.ThreadPool.BindHandle
QueueUserWorkItem	Queues a work item to a worker thread in the thread pool.	System.Threading.ThreadPool.QueueUserWorkItem System.Threading.ThreadPool.UnsafeQueueUserWorkItem

Alphabetical Win32 Category List
Hierarchical Win32 Category List

PSAPI Functions

Win32 function	Description	.NET Framework API
EnumProcesses	Retrieves the process identifier for each process object in the system.	System.Diagnostics.Process.GetProcesses
EnumProcessModules	Retrieves a handle for each module in the specified process.	System.Diagnostics.Process.Modules
GetModuleBaseName	Retrieves the base name for the specified module.	System.Diagnostics.ProcessModule.ModuleName
GetModuleFileNameEx	Retrieves the fully qualified path for the specified module.	Either of the following: System.Diagnostics.ProcessModule.FileName System.Reflection.Module.FullyQualifiedName
GetModuleInformation	Retrieves information about the specified module.	System.Diagnostics.ProcessModule
GetProcessMemoryInfo	Retrieves information about the memory usage of the specified process.	System.Diagnostics.Process.PagedMemorySize System.Diagnostics.Process.PeakPagedMemorySize System.Diagnostics.Process.PeakWorkingSet System.Diagnostics.Process.WorkingSet

Alphabetical Win32 Category List
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Rectangle Functions

Win32 function	Description	.NET Framework API
EqualRect	Determines whether the two specified rectangles are equal by comparing the coordinates of their upper-left and lower-right corners.	System.Drawing.Rectangle.Equals
InflateRect	Increases or decreases the width and height of the specified rectangle.	System.Drawing.Rectangle.Inflate
IntersectRect	Calculates the intersection of two source rectangles and places the coordinates of the intersection rectangle into the destination rectangle.	System.Drawing.Rectangle.Intersect
IsRectEmpty	Determines whether the specified rectangle is empty.	System.Drawing.Rectangle.IsEmpty
OffsetRect	Moves the specified rectangle by the specified offsets.	System.Drawing.Rectangle.Offset
PtInRect	Determines whether the specified point lies within the specified rectangle.	System.Drawing.Rectangle.Contains
SetRect	Sets the coordinates of the specified rectangle.	System.Drawing.Rectangle.FromLTRB
SetRectEmpty	Creates an empty rectangle in which all coordinates are set to zero.	System.Drawing.Rectangle.FromLTRB
UnionRect	Creates the union of two rectangles.	System.Drawing.Rectangle.Union

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Region Functions

Win32 function	Description	.NET Framework API
CombineRgn	Combines two regions and stores the result in a third region.	System.Drawing.Region.Clone System.Drawing.Region.Exclude System.Drawing.Region.Intersect System.Drawing.Region.Union System.Drawing.Region.Xor
CreateEllipticRgn	Creates an elliptical region.	System.Drawing.Drawing2D.GraphicsPath constructor System.Drawing.Drawing2D.GraphicsPath.AddEllipse System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
CreateEllipticRgnIndirect	Creates an elliptical region.	System.Drawing.Drawing2D.GraphicsPath constructor System.Drawing.Drawing2D.GraphicsPath.AddEllipse System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
CreatePolygonRgn	Creates a polygonal region.	System.Drawing.Drawing2D.GraphicsPath constructor System.Drawing.Drawing2D.GraphicsPath.AddPolygon System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
CreatePolyPolygonRgn	Creates a region consisting of a series of polygons.	System.Drawing.Drawing2D.GraphicsPath constructor System.Drawing.Drawing2D.GraphicsPath.AddPolygon System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
CreateRectRgnIndirect	Creates a rectangular region.	System.Drawing.Region.Region(System.Drawing.Rectangle)
CreateRoundRectRgn	Creates a rectangular region with rounded corners.	System.Drawing.Drawing2D.GraphicsPath.AddLines System.Drawing.Pen.LineJoin = System.Drawing.Drawing2D.LineJoin.Round
EqualRgn	Checks the two specified regions to determine whether they are identical.	System.Drawing.Region.Equals
ExtCreateRegion	Creates a region from the specified region and transformation data.	System.Drawing.Region.Transform
FillRgn	Fills a region by using the specified brush.	System.Drawing.Graphics.FillRegion
GetPolyFillMode	Retrieves the current polygon fill mode.	System.Drawing.Drawing2D.GraphicsPath.FillMode
GetRegionData	Fills the specified buffer with data describing a region.	System.Drawing.Region.GetRegionData
GetRgnBox	Retrieves the bounding rectangle of the specified region.	System.Drawing.Region.GetBounds
OffsetRgn	Moves a region by the specified offsets.	System.Drawing.Region.Translate
PtInRegion	Determines whether the specified point is inside the specified region.	System.Drawing.Region.IsVisible
RectInRegion	Determines whether any part of the specified rectangle is within the boundaries of a region.	System.Drawing.Region.IsVisible
SetPolyFillMode	Sets the polygon fill mode for functions that fill polygons.	System.Drawing.Drawing2D.GraphicsPath.FillMode

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Registry Functions

Win32 function	Description	.NET Framework API
RegCloseKey	Releases a handle to the specified registry key.	Microsoft.Win32.RegistryKey.Close
RegConnectRegistry	Establishes a connection to a predefined registry handle on another computer.	Microsoft.Win32.RegistryKey.OpenRemoteBaseKey
RegCreateKeyEx	Creates the specified registry key.	Microsoft.Win32.RegistryKey.CreateSubKey
RegDeleteKey	Deletes a subkey.	Microsoft.Win32.RegistryKey.DeleteSubKeyTree
RegDeleteValue	Removes a named value from the specified registry key.	Microsoft.Win32.RegistryKey.DeleteValue
RegEnumKeyEx	Enumerates subkeys of the specified open registry key.	Microsoft.Win32.RegistryKey.GetSubKeyNames
RegEnumValue	Enumerates the values for the specified open registry key.	Microsoft.Win32.RegistryKey.GetValueNames Microsoft.Win32.RegistryKey.GetValue
RegFlushKey	Writes all the attributes of the specified open registry key into the registry.	Microsoft.Win32.RegistryKey.Flush
RegOpenCurrentUser	Retrieves a handle to the HKEY_CURRENT_USER key for the user that the current thread is impersonating.	Microsoft.Win32.Registry.CurrentUser
RegOpenKeyEx	Opens the specified registry key.	Microsoft.Win32.RegistryKey.OpenSubKey
RegOpenUserClassesRoot	Retrieves a handle to the HKEY_CLASSES_ROOT key for the specified user.	Microsoft.Win32.Registry.ClassesRoot
RegQueryInfoKey	Retrieves information about the specified registry key.	Microsoft.Win32.RegistryKey.SubKeyCount Microsoft.Win32.RegistryKey.ValueCount
RegQueryValueEx	Retrieves the type and data for a specified value name associated with an open registry key.	Microsoft.Win32.RegistryKey.GetValue
RegSetValueEx	Sets the data and type of a specified value under a registry key.	Microsoft.Win32.RegistryKey.SetValue

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Resource Functions

Win32 function	Description	.NET Framework API
CopyImage	Creates a new icon, cursor, or bitmap and copies the attributes of the old one to the new one.	System.Drawing.Image.Clone
EnumResNameProc	An application-defined callback function used with EnumResourceNames.	System.Resources.ResourceReader.GetEnumerator
EnumResourceNames	Searches for resources of a specified type and passes the name or the ID to a callback function.	System.Resources.ResourceReader.GetEnumerator
LoadImage	Loads an icon, cursor, or bitmap.	System.Drawing.Bitmap.Bitmap(System.Type, System.String) System.Drawing.Icon.Icon(System.Type, System.String) System.Windows.Forms.Cursor.Cursor(System.Type, System.String) System.Resources.ResourceManager.GetObject System.Resources.ResourceSet.GetObject

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Rich Edit Control Functions

Win32 Funtion	Description	.NET Framework API
EditStreamCallback	An application-defined callback function used with the EM_STREAMIN and EM_STREAMOUT messages.	System.Windows.Forms.RichTextBox.LoadFile System.Windows.Forms.RichTextBox.RichTextBox.SaveFile Note   Not a callback function.

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Scroll Bar Functions

Win32 function	Description	.NET Framework API
EnableScrollBar	Enables or disables one or both scroll bar arrows.	System.Windows.Forms.ScrollBar.Enabled Note   Cannot enable/disable built-in scrollbars (auto-scrolling).
GetScrollBarInfo	Retrieves information about the specified scroll bar.	System.Windows.Forms.ScrollBar.Value System.Windows.Forms.ScrollEventArgs.Type
GetScrollInfo	Retrieves the parameters of a scroll bar.	System.Windows.Forms.ScrollBar.Maximum System.Windows.Forms.ScrollBar.Minimum System.Windows.Forms.ScrollBar.Value
GetScrollPos	Retrieves the current position of the scroll box.	System.Windows.Forms.ScrollBar.Value
GetScrollRange	Retrieves the current minimum and maximum scroll box positions.	System.Windows.Forms.ScrollBar.Minimum System.Windows.Forms.ScrollBar.Maximum
SetScrollInfo	Sets the parameters of a scroll bar.	System.Windows.Forms.ScrollBar.Maximum System.Windows.Forms.ScrollBar.Minimum System.Windows.Forms.ScrollBar.Value
SetScrollPos	Sets the position of the scroll box.	System.Windows.Forms.ScrollBar.Value
SetScrollRange	Sets the minimum and maximum scroll box position.	System.Windows.Forms.ScrollBar.Minimum System.Windows.Forms.ScrollBar.Maximum
ShowScrollBar	Shows or hides the specified scroll bar.	Any of the following: System.Windows.Forms.Form.AutoScroll System.Windows.Forms.HScrollBar constructor System.Windows.Forms.ListBox.HorizontalScrollBar System.Windows.Forms.ListBox.ScrollAlwaysVisible System.Windows.Forms.RichTextBox.ScrollBars System.Windows.Forms.ScrollableControl.HScroll System.Windows.Forms.ScrollableControl.VScroll System.Windows.Forms.TextBox.ScrollBars System.Windows.Forms.VScrollBar constructor

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Hierarchical Win32 Category List

Service Functions

Functions implemented by services:

Win32 function	Description	.NET Framework API
Handler	An application-defined callback function used with RegisterServiceCtrlHandler.	All of the following: System.ServiceProcess.ServiceBase.OnContinue System.ServiceProcess.ServiceBase.OnCustomCommand ServiceProcess.ServiceBase.OnPause System.ServiceProcess.ServiceBase.OnShutdown System.ServiceProcess.ServiceBase.OnStop
HandlerEx	An application-defined callback function used with RegisterServiceCtrlHandlerEx.	All of the following: System.ServiceProcess.ServiceBase.OnContinue System.ServiceProcess.ServiceBase.OnCustomCommand System.ServiceProcess.ServiceBase.OnPause System.ServiceProcess.ServiceBase.OnPowerEvent System.ServiceProcess.ServiceBase.OnShutdown System.ServiceProcess.ServiceBase.OnStop
ServiceMain	An application-defined function that serves as the entry point for a service.	System.ServiceProcess.ServiceBase.Run

Functions used by programs that control or configure services:

Win32 function	Description	.NET Framework API
ChangeServiceConfig	Changes the configuration parameters of a service.	System.ServiceProcess.ServiceController.DisplayName
CloseServiceHandle	Closes the specified handle to a service control manager object or a service object.	System.ServiceProcess.ServiceController.Close
ControlService	Sends a control code to a service.	System.ServiceProcess.ServiceController.Continue System.ServiceProcess.ServiceController.Pause System.ServiceProcess.ServiceController.Stop
CreateService	Creates a service object and adds it to the specified service control manager database.	System.ServiceProcess.ServiceBase.ServiceName System.ServiceProcess.ServiceInstaller.Install
DeleteService	Marks the specified service for deletion from the service control manager database.	System.ServiceProcess.ServiceInstaller.Uninstall
EnumDependentServices	Retrieves the name and status of each service that depends on the specified service.	System.ServiceProcess.ServiceController.DependentServices
EnumServicesStatus	Enumerates services in the specified service control manager database.	System.ServiceProcess.ServiceController.GetServices
GetServiceDisplayName	Retrieves the display name of the specified service.	System.ServiceProcess.ServiceController.DisplayName
GetServiceKeyName	Retrieves the name of the specified service.	System.ServiceProcess.ServiceBase.ServiceName System.ServiceProcess.ServiceController.ServiceName
OpenService	Opens an existing service.	System.ServiceProcess.ServiceController constructor
QueryServiceConfig	Retrieves the configuration parameters of the specified service.	System.ServiceProcess.ServiceController.DisplayName System.ServiceProcess.ServiceController.ServicesDependedOn System.ServiceProcess.ServiceController.ServiceName System.ServiceProcess.ServiceController.ServiceType
QueryServiceStatus	Retrieves the current status of the specified service.	System.ServiceProcess.ServiceController.Status
StartService	Starts a service.	System.ServiceProcess.ServiceController.Start

Alphabetical Win32 Category List
Hierarchical Win32 Category List

String Functions

Win32 function	Description	.NET Framework API
CharLower	Converts a character string or a single character to lowercase.	System.String.ToLower
CharNext	Retrieves a pointer to the next character in a string.	System.String.GetEnumerator.MoveNext
CharUpper	Converts a character string or a single character to uppercase.	System.String.ToUpper
CompareString	Compares two character strings, using the specified locale.	System.String.Compare
IsCharAlpha	Determines whether a character is an alphabetical character.	System.Char.IsLetter
IsCharAlphaNumeric	Determines whether a character is either an alphabetical or a numeric character.	System.Char.IsLetterOrDigit
IsCharLower	Determines whether a character is lowercase.	System.Char.IsLower
IsCharUpper	Determines whether a character is uppercase.	System.Char.IsUpper
LoadString	Loads a string resource from the executable file associated with a specified module.	System.Resources.ResourceManager.GetString
lstrcat	Appends one string to another.	System.String.Concat Note   Strings are immutable in the .NET Framework. Methods that appear to modify a string actually return a new string.
lstrcmp	Compares two character strings.	System.String.Compare
lstrcmpi	Compares two character strings.	System.String.Compare
lstrcpy	Copies a string to a buffer.	System.String.ToCharArray
lstrcpyn	Copies a specified number of characters from a source string into a buffer.	System.String.CopyTo System.String.ToCharArray
lstrlen	Retrieves the length of the specified string (not including the terminating null character).	System.String.Length
wsprintf	Formats and stores a series of characters and values in a buffer.	System.String.Format
wvsprintf	Formats and stores a series of characters and values in a buffer.	System.String.Format

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Structured Exception-Handling Functions

Win32 function	Description	.NET Framework API
GetExceptionCode	Retrieves a code that identifies the type of exception that occurred.	System.Exception.GetType
GetExceptionInformation	Retrieves a machine-independent description of an exception and information about the machine state that existed for the thread when the exception occurred.	System.Exception class
RaiseException	Raises an exception in the calling thread.	Throw an instance of a System.Exception

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Synchronization Functions

CriticalSection functions:

Win32 function	Description	.NET Framework API
EnterCriticalSection	Waits for ownership of the specified critical section object.	System.Threading.Monitor.Enter
LeaveCriticalSection	Releases ownership of the specified critical section object.	System.Threading.Monitor.Exit
TryEnterCriticalSection	Attempts to enter a critical section without blocking.	System.Threading.Monitor.TryEnter

Event functions:

Win32 function	Description	.NET Framework API
CreateEvent	Creates or opens a named or an unnamed event object.	Either of the following: System.Threading.AutoResetEvent constructor System.Threading.ManualResetEvent constructor
ResetEvent	Sets the specified event object to the nonsignaled state.	Either of the following: System.Threading.AutoResetEvent.Reset System.Threading.ManualResetEvent.Reset
SetEvent	Sets the specified event object to the signaled state.	Either of the following: System.Threading.AutoResetEvent.Set System.Threading.ManualResetEvent.Set

Interlocked functions:

Win32 function	Description	.NET Framework API
InterlockedCompareExchange	Performs an atomic comparison of the specified values and exchanges the values, based on the outcome of the comparison.	System.Threading.Interlocked.CompareExchange
InterlockedCompareExchangePointer	Performs an atomic comparison of the specified values and exchange of the values, based on the outcome of the comparison.	System.Threading.Interlocked.CompareExchange
InterlockedDecrement	Decrements (decreases by one) the value of the specified variable and checks the resulting value.	System.Threading.Interlocked.Decrement
InterlockedExchange	Atomically exchanges a pair of values.	System.Threading.Interlocked.Exchange
InterlockedIncrement	Increments (increases by one) the value of the specified variable and checks the resulting value.	System.Threading.Interlocked.Increment

Mutex functions:

Win32 function	Description	.NET Framework API
CreateMutex	Creates or opens a named or an unnamed mutex object.	System.Threading.Mutex constructor
OpenMutex	Opens an existing named mutex object.	System.Threading.Mutex(false, string, name) constructor
ReleaseMutex	Releases ownership of the specified mutex object.	System.Threading.Mutex.ReleaseMutex

Wait functions:

Win32 function	Description	.NET Framework API
RegisterWaitForSingleObject	Directs a wait thread in the thread pool to wait on the object.	System.Threading.ThreadPool.RegisterWaitForSingleObject System.Threading.ThreadPool.UnsafeRegisterWaitForSingleObject
UnregisterWait	Cancels a registered wait operation.	System.Threading.RegisteredWaitHandle.Unregister
WaitForMultipleObjects	Returns when the specified criteria for the specified objects is met.	Either of the following: System.Threading.WaitHandle.WaitAll System.Threading.WaitHandle.WaitAny
WaitForSingleObject	Returns when the specified criteria for the specified object is met.	System.Threading.WaitHandle.WaitOne
WaitOrTimerCallback	Returns when the specified criteria is met.	See System.Threading.WaitOrTimerCallback delegate

WaitableTimer functions:

Win32 function	Description	.NET Framework API
CancelWaitableTimer	Sets the specified waitable timer to the inactive state.	System.Threading.Timer.Change(System.Threading.Timeout.Infinite, System.Threading.Timeout.Infinite)
CreateWaitableTimer	Creates or opens a waitable timer object.	System.Threading.Timer constructor
SetWaitableTimer	Activates the specified waitable timer.	System.Threading.Timer constructor
TimerAPCProc	Application-defined timer completion routine used with SetWaitableTimer.	See System.Threading.TimerCallback delegate

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System Information Functions

Win32 function	Description	.NET Framework API
ExpandEnvironmentStrings	Replaces environment-variable strings with their defined values.	System.Environment.ExpandEnvironmentVariables
GetComputerName	Retrieves the NetBIOS name of the local computer.	System.Environment.MachineName System.Windows.Forms.SystemInformation.ComputerName
GetCurrentHwProfile	Retrieves the current hardware profile for the local computer.	Use System.Management and Microsoft.Win32.RegistryKey
GetKeyboardType	Retrieves information about the current keyboard.	System.Management.ManagementClass("Win32_Keyboard") System.Management.ManagementClass.GetInstances System.Management.ManagementObject.Properties
GetNativeSystemInfo	Retrieves information about the current system for an application running under WOW64.	System.Management.ManagementClass("Win32_Processor") System.Management.ManagementClass.GetInstances System.Management.ManagementObject.Properties
GetSysColor	Retrieves the current color of a display element.	System.Drawing.SystemColors
GetSystemDirectory	Retrieves the path of the system directory.	System.Environment.SystemDirectory
GetSystemInfo	Retrieves information about the current system.	System.Management.ManagementClass("Win32_Processor") System.Management.ManagementClass.GetInstances System.Management.ManagementObject.Properties
GetSystemMetrics	Retrieves system metrics and configuration settings.	System.Windows.Forms.SystemInformation properties
GetUserName	Retrieves the user name of the current thread.	System.Environment.UserName
GetVersion	Retrieves the version number of the operating system.	System.Environment.OSVersion
GetVersionEx	Retrieves the version number of the current operating system.	System.Environment.OSVersion
GetWindowsDirectory	Retrieves the path of the Windows directory.	System.Management.ManagementClass("Win32_OperatingSystem") System.Management.ManagementClass.GetInstances System.Management.ManagementObject["WindowsDirectory"].ToString

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Tape Backup Functions

Win32 function	Description	.NET Framework API
GetTapeParameters	Retrieves information that describes the tape or the tape drive.	System.Management.ManagementClass("MSTapeMediaCapacity") System.Management.ManagementClass("Win32_TapeDrive") System.Management.ManagementClass.GetInstances System.Management.ManagementObject.Properties

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Text Object Model Functions

Win32 function	Description	.NET Framework API
ITextDocument	Retrieves the active selection and range objects for any story in the document.	System.Windows.Forms.RichTextBox
ITextFont	Encapsulates the functionality of the Microsoft Word Font dialog box.	System.Windows.Forms.RichTextBox
ITextPara	Encapsulates the functionality of the Microsoft Word Paragraph dialog box.	System.Windows.Forms.RichTextBox
ITextRange	Enables an application to select text in a story, and then examine or change that text.	System.Windows.Forms.RichTextBox

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Time Functions

Win32 function	Description	.NET Framework API
GetSystemTime	Retrieves the current system date and time in UTC format.	System.DateTime.UtcNow
GetTimeFormat	Formats a system time as a time string for a specified locale.	System.DateTime.ToString
SystemTimeToFileTime	Converts a system time to a file time.	System.DateTime.ToFileTime
FileTimeToLocalFileTime	Converts a UTC file time to a local file time.	System.DateTime.ToFileTime
GetLocalTime	Retrieves the current local date and time.	System.DateTime.Now
GetTimeZoneInformation	Retrieves the current time-zone parameters.	System.TimeZone.CurrentTimeZone
CompareFileTime	Compares two file times.	System.DateTime.Compare
FileTimeToLocalFileTime	Converts a UTC file time to a local file time.	System.DateTime.ToLocalTime
FileTimeToSystemTime	Converts a file time to system time format.	System.DateTime.ToUniversalTime
GetFileTime	Retrieves the date and time that a file was created, last accessed, and last modified.	Any of the following: System.IO.Directory.GetCreationTime System.IO.Directory.GetLastAccessTime System.IO.Directory.GetLastWriteTime System.IO.DirectoryInfo.CreationTime System.IO.DirectoryInfo.LastAccessTime System.IO.DirectoryInfo.LastWriteTime System.IO.File.GetCreationTime System.IO.File.GetLastAccessTime System.IO.File.GetLastWriteTime System.IO.FileInfo.CreationTime System.IO.FileInfo.LastAccessTime System.IO.FileInfo.LastWriteTime
GetSystemTimeAsFileTime	Retrieves the current system date and time in UTC format.	System.DateTime.UtcNow.ToFileTimeUtc
LocalFileTimeToFileTime	Converts a local file time to a file time based on UTC.	System.DateTime.ToFileTimeUtc
SetFileTime	Sets the date and time that a file was created, last accessed, or last modified.	Any of the following: System.IO.Directory.SetCreationTime System.IO.Directory.SetLastAccessTime System.IO.Directory.SetLastWriteTime System.IO.DirectoryInfo.CreationTime System.IO.DirectoryInfo.LastAccessTime System.IO.DirectoryInfo.LastWriteTime System.IO.File.SetCreationTime System.IO.File.SetLastAccessTime System.IO.File.SetLastWriteTime System.IO.FileInfo.CreationTime System.IO.FileInfo.LastAccessTime System.IO.FileInfo.LastWriteTime
SystemTimeToFileTime	Converts a system time to a file time.	System.DateTime.ToFileTime
GetTickCount	Retrieves the number of milliseconds that have elapsed since the system was started.	System.Environment.TickCount

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Timer Functions

Win32 function	Description	.NET Framework API
KillTimer	Destroys the specified timer.	System.Threading.Timer.Dispose System.Timers.Timer.Dispose System.Windows.Forms.Timer.Dispose
QueryPerformanceCounter	Retrieves the current value of the high-resolution performance counter.	System.Diagnostics.PerformanceCounter.NextValue System.Diagnostics.PerformanceCounter.RawValue
QueryPerformanceFrequency	Retrieves the frequency of the high-resolution performance counter.	System.Diagnostics.PerformanceCounter.CounterType
SetTimer	Creates a timer with the specified time-out value.	Any of the following: System.Threading.Timer constructor System.Timers.Timer constructor System.Windows.Forms.Timer constructor System.Windows.Forms.Timer.Interval
TimerProc	An application-defined callback function that processes WM_TIMER messages.	Either of the following: System.Threading.TimerCallback delegate System.Timers.ElapsedEventHandler delegate

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Tool Help Functions

Win32 function	Description	.NET Framework API
CreateToolhelp32Snapshot	Takes a snapshot of the processes and heaps, modules, and threads used by the processes.	System.Diagnostics.Process.GetProcesses System.Diagnostics.Process.Modules System.Diagnostics.Process.Threads
Module32First	Retrieves information about the first module associated with a process.	System.Diagnostics.Process.Modules
Module32Next	Retrieves information about the next module associated with a process or thread.	System.Diagnostics.Process.Modules
Process32First	Retrieves information about the first process encountered in a system snapshot.	System.Diagnostics.Process.GetProcesses
Process32Next	Retrieves information about the next process recorded in a system snapshot.	System.Diagnostics.Process.GetProcesses
Thread32First	Retrieves information about the first thread of any process encountered in a system snapshot.	System.Diagnostics.Process.Threads
Thread32Next	Retrieves information about the next thread of any process encountered in the system memory snapshot.	System.Diagnostics.Process.Threads

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Unicode and Character Set Functions

Win32 function	Description	.NET Framework API
GetTextCharset	Retrieves a character-set identifier for the font that is currently selected into a specified device context.	System.Drawing.Font.GdiCharSet

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User Profile Functions

Win32 function	Description	.NET Framework API
CreateEnvironmentBlock	Retrieves the environment variables for the specified user.	Microsoft.Win32.Registry class Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue
DeleteProfile	Deletes the user profile and all user-related settings from the specified computer.	System.IO.Directory.Delete Microsoft.Win32.Registry Microsoft.Win32.RegistryKey.DeleteSubKey
ExpandEnvironmentStringsForUser	Expands the source string by using the environment block established for the specified user.	Microsoft.Win32.Registry class Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValueNames, and then call GetValue for each name
GetAllUsersProfileDirectory	Retrieves the path to the root of the All Users profile.	Microsoft.Win32.Registry class Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue
GetDefaultUserProfileDirectory	Retrieves the path to the root of the Default User profile.	Microsoft.Win32.Registry class Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue
GetProfilesDirectory	Retrieves the path to the root directory where all of the user profiles are stored.	Microsoft.Win32.Registry class Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue
GetUserProfileDirectory	Retrieves the path to the root directory of the profile for the specified user.	Microsoft.Win32.Registry class Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue

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Version Information Functions

Win32 function	Description	.NET Framework API
GetFileVersionInfo	Retrieves version information for the specified file.	System.Diagnostics.FileVersionInfo.GetVersionInfo
GetFileVersionInfoSize	Determines whether the operating system can retrieve version information for a specified file. If version information is available, the function returns the size, in bytes, of that information.	System.Diagnostics.FileVersionInfo.GetVersionInfo
VerLanguageName	Retrieves a description string for the language associated with a specified binary Microsoft language identifier.	System.Globalization.CultureInfo.Name
VerQueryValue	Retrieves specified version information from the specified version-information resource.	System.Diagnostics.FileVersionInfo properties

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Window Functions

Win32 function	Description	.NET Framework API
AdjustWindowRect	Calculates the required size of the window rectangle, based on the desired client-rectangle size.	System.Windows.Forms.Form.ClientSize
AdjustWindowRectEx	Calculates the required size of the window rectangle, based on the desired client-rectangle size.	System.Windows.Forms.Form.ClientSize
ArrangeIconicWindows	Arranges all minimized (iconic) child windows of the specified parent window.	System.Windows.Forms.Form.LayoutMdi(MdiLayout.ArrangeIcons)
BringWindowToTop	Brings the specified window to the top of the Z order.	System.Windows.Forms.Form.BringToFront
CascadeWindows	Cascades the specified child windows of the specified parent window.	System.Windows.Forms.Form.LayoutMdi(MdiLayout.Cascade)
ChildWindowFromPoint	Determines which, if any, of the child windows belonging to a parent window contains the specified point.	System.Windows.Forms.Form.GetChildAtPoint
CloseWindow	Minimizes (but does not destroy) the specified window.	System.Windows.Forms.Form.WindowState = System.Windows.Forms.FormWindowState.Minimized
CreateWindow	Creates an overlapped, pop-up, or child window.	System.Windows.Forms.Form constructor
CreateWindowEx	Creates an overlapped, pop-up, or child window with an extended window style.	System.Windows.Forms.Form constructor
DestroyWindow	Destroys the specified window.	System.Windows.Forms.Form.Close
EnumChildProc	An application-defined callback function used with EnumChildWindows.	Same as EnumChildWindows
EnumChildWindows	Enumerates the child windows that belong to the specified parent window.	System.Windows.Forms.Form.Controls
GetAncestor	Retrieves the handle to the ancestor of the specified window.	System.Windows.Forms.Form.FindForm System.Windows.Forms.Form.Owner System.Windows.Forms.Form.Parent
GetClientRect	Retrieves the coordinates of the client area for a window.	System.Windows.Forms.Form.ClientRectangle
GetForegroundWindow	Returns a handle to the foreground window.	System.Windows.Forms.Form.ActiveForm
GetLayeredWindowAttributes	Retrieves the opacity and transparency color key of a layered window.	System.Windows.Forms.Form.Opacity System.Windows.Forms.Form.TransparencyKey
GetNextWindow	Retrieves a handle to the next or previous window in Z order.	System.Windows.Forms.Form.Controls[1 +/- Control.IndexOf]
GetParent	Retrieves a handle to the parent window for the specified child window.	System.Windows.Forms.Form.FindForm System.Windows.Forms.Form.Parent
GetTitleBarInfo	Retrieves information about the specified title bar.	System.Windows.Forms.Form.SystemInformation.CaptionButtonSize System.Windows.Forms.Form.SystemInformation.CaptionHeight System.Windows.Forms.Form.HelpButton System.Windows.Forms.Form.MaximizeBox System.Windows.Forms.Form.MinimizeBox
GetTopWindow	Retrieves a handle to the child window at the top of the Z order.	System.Windows.Forms.Form.Controls[0]
GetWindow	Retrieves a handle to a window that has the specified relationship to the specified window.	System.Windows.Forms.Form.Controls
GetWindowInfo	Retrieves information about the specified window.	System.Windows.Forms.Form.ClientSize System.Windows.Forms.Form.CreateParams.ExStyle System.Windows.Forms.Form.CreateParams.Style System.Windows.Forms.Form.Name System.Windows.Forms.Form.ProductVersion System.Windows.Forms.Form.Size System.Windows.Forms.SystemInformation.BorderSize
GetWindowPlacement	Retrieves the show state and the restored, minimized, and maximized positions of the specified window.	System.Windows.Forms.Form.Bounds System.Windows.Forms.Form.MaximizedBounds System.Windows.Forms.Form.Visible System.Windows.Forms.Form.WindowState
GetWindowRect	Retrieves the dimensions of the bounding rectangle of the specified window.	System.Windows.Forms.Form.Bounds
GetWindowText	Copies the text of the title bar of the specified window.	System.Windows.Forms.Form.Text
GetWindowTextLength	Retrieves the length of the title bar text for the specified window.	System.Windows.Forms.Form.Text.Length
IsChild	Tests whether a window is a child window or descendant window of a specified parent window.	System.Windows.Forms.Form.Contains System.Windows.Forms.Form.IsMdiChild
IsIconic	Determines whether the specified window is minimized (iconic).	System.Windows.Forms.Form.WindowState
IsWindowVisible	Retrieves the visibility state of the specified window.	System.Windows.Forms.Form.Visible
IsZoomed	Determines whether a window is maximized (zoomed).	System.Windows.Forms.Form.WindowState
MoveWindow	Changes the position and dimensions of the specified window.	System.Windows.Forms.Form.SetBounds
OpenIcon	Restores a minimized (iconic) window to its previous size and position.	System.Windows.Forms.Form.WindowState = System.Windows.Forms.FormWindowState.Normal
SetForegroundWindow	Puts the thread that created the specified window into the foreground and activates the window.	System.Windows.Forms.Form.Activate
SetLayeredWindowAttributes	Sets the opacity and transparency color key of a layered window.	System.Windows.Forms.Form.Opacity System.Windows.Forms.Form.TransparencyKey
SetParent	Changes the parent window of the specified child window.	System.Windows.Forms.Form.Parent
SetWindowPlacement	Sets the show state and the restored, minimized, and maximized positions of the specified window.	System.Windows.Forms.Form.Bounds System.Windows.Forms.Form.MaximizedBounds System.Windows.Forms.Form.SetBounds System.Windows.Forms.Form.Visible System.Windows.Forms.Form.WindowState
SetWindowPos	Changes the size, position, and Z order of a window.	System.Windows.Forms.Form.BringToFront System.Windows.Forms.Form.Enabled System.Windows.Forms.Form.SendToBack System.Windows.Forms.Form.SetBounds System.Windows.Forms.Form.TopMost System.Windows.Forms.Form.Visible
SetWindowText	Changes the text of the title bar for the specified window.	System.Windows.Forms.Form.Text
ShowWindow	Sets the show state of the specified window.	System.Windows.Forms.Form.Show System.Windows.Forms.Form.Visible System.Windows.Forms.Form.WindowState
TileWindows	Tiles the specified child windows of the specified parent window.	System.Windows.Forms.Form.LayoutMdi(MdiLayout.TileHorizontal) System.Windows.Forms.Form.LayoutMdi(MdiLayout.TileVertical)
WindowFromPoint	Retrieves a handle to the window that contains the specified point.	System.Windows.Forms.Form.GetChildAtPoint

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Window Class Functions

Win32 function	Description	.NET Framework API
GetClassInfo	Retrieves information about a window class.	System.ComponentModel.Component.Events System.Windows.Forms.Control.Cursor System.Windows.Forms.Control.Name System.Windows.Forms.Form.BackColor System.Windows.Forms.Form.Icon System.Windows.Forms.Form.Menu System.Windows.Forms.Form.CreateParams.ClassStyle
GetClassLong	Retrieves the specified 32-bit value from the WNDCLASSEX structure associated with the specified window.	System.ComponentModel.Component.Events System.Windows.Forms.Control.Cursor System.Windows.Forms.Control.Name System.Windows.Forms.Form.BackColor System.Windows.Forms.Form.Icon System.Windows.Forms.Form.Menu System.Windows.Forms.Form.CreateParams.ClassStyle
GetClassLongPtr	Retrieves the specified value from the WNDCLASSEX structure associated with the specified window.	System.ComponentModel.Component.Events System.Windows.Forms.Control.Cursor System.Windows.Forms.Control.Name System.Windows.Forms.Form.BackColor System.Windows.Forms.Form.Icon System.Windows.Forms.Form.Menu System.Windows.Forms.Form.CreateParams.ClassStyle
GetClassName	Retrieves the name of the class to which the specified window belongs.	System.Windows.Forms.Control.Name
GetWindowLong	Retrieves information about the specified window.	System.ComponentModel.Component.Events System.Windows.Forms.Control.Parent System.Windows.Forms.Form.CreateParams.ExStyle System.Windows.Forms.Form.CreateParams.Style System.Windows.Forms.Form properties
GetWindowLongPtr	Retrieves information about the specified window.	System.ComponentModel.Component.Events System.Windows.Forms.Control.Parent System.Windows.Forms.Form.CreateParams.ExStyle System.Windows.Forms.Form.CreateParams.Style System.Windows.Forms.Form properties
RegisterClass	Registers a window class.	System.Windows.Forms.Control.Cursor System.Windows.Forms.Control.Name System.Windows.Forms.Form.BackColor System.Windows.Forms.Form.Icon System.Windows.Forms.Form.Menu System.Windows.Forms.Form.CreateParams.ClassStyle System.Windows.Forms.Form events
SetClassLong	Replaces the specified 32-bit value at the specified offset into the extra class memory or the WNDCLASSEX structure.	System.Windows.Forms.Control.Cursor System.Windows.Forms.Control.Name System.Windows.Forms.Form.BackColor System.Windows.Forms.Form.Icon System.Windows.Forms.Form.Menu System.Windows.Forms.Form.CreateParams.ClassStyle System.Windows.Forms.Form events
SetClassLongPtr	Replaces the specified value at the specified offset into the extra class memory or the WNDCLASSEX structure.	System.Windows.Forms.Control.Cursor System.Windows.Forms.Control.Name System.Windows.Forms.Form.BackColor System.Windows.Forms.Form.Icon System.Windows.Forms.Form.Menu System.Windows.Forms.Form.CreateParams.ClassStyle System.Windows.Forms.Form events
SetWindowLong	Changes an attribute of the specified window.	System.Windows.Forms.Control.Parent System.Windows.Forms.Form.CreateParams.ExStyle System.Windows.Forms.Form.CreateParams.Style System.Windows.Forms.Form properties System.Windows.Forms.Form events
SetWindowLongPtr	Changes an attribute of the specified window.	System.Windows.Forms.Control.Parent System.Windows.Forms.Form.CreateParams.ExStyle System.Windows.Forms.Form.CreateParams.Style System.Windows.Forms.Form properties System.Windows.Forms.Form events

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Window Procedure Functions

Win32 function	Description	.NET Framework API
DefWindowProc	Calls the default window procedure to provide default processing for any window messages that an application does not process.	Any of the following: System.Windows.Forms.Form.DefWndProc System.Windows.Forms.Control.DefWndProc System.Windows.Forms.NativeWindow.DefWndProc
WindowProc	An application-defined function that processes messages sent to a window.	Any of the following: System.Windows.Forms.Form.WndProc System.Windows.Forms.Control.WndProc System.Windows.Forms.NativeWindow.WndProc

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Window Property Functions

Win32 function	Description	.NET Framework API
GetProp	Retrieves a data handle from the property list of the specified window.	System.Windows.Forms.Control.Tag
RemoveProp	Removes an entry from the property list of the specified window.	System.Windows.Forms.Control.Tag
SetProp	Adds a new entry or changes an existing entry in the property list of the specified window.	System.Windows.Forms.Control.Tag

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