Coordinate Space and Transformation Functions

The following functions are used with coordinate spaces and transformations.

Function	Description
ClientToScreen	Converts the client-area coordinates of a specified point to screen coordinates.
CombineTransform	Concatenates two world-space to page-space transformations.
DPtoLP	Converts device coordinates into logical coordinates.
GetCurrentPositionEx	Retrieves the current position in logical coordinates.
GetDisplayAutoRotationPreferences	Gets the orientation preferences of the display.
GetGraphicsMode	Retrieves the current graphics mode for the specified device context.
GetMapMode	Retrieves the current mapping mode.
GetViewportExtEx	Retrieves the x-extent and y-extent of the current viewport for the specified device context.
GetViewportOrgEx	Retrieves the x-coordinates and y-coordinates of the viewport origin for the specified device context.
GetWindowExtEx	Retrieves the x-extent and y-extent of the window for the specified device context.
GetWindowOrgEx	Retrieves the x-coordinates and y-coordinates of the window origin for the specified device context.
GetWorldTransform	Retrieves the current world-space to page-space transformation.
LPtoDP	Converts logical coordinates into device coordinates.
MapWindowPoints	Converts (maps) a set of points from a coordinate space relative to one window to a coordinate space relative to another window.
ModifyWorldTransform	Changes the world transformation for a device context using the specified mode.
OffsetViewportOrgEx	Modifies the viewport origin for a device context using the specified horizontal and vertical offsets.
OffsetWindowOrgEx	Modifies the window origin for a device context using the specified horizontal and vertical offsets.
ScaleViewportExtEx	Modifies the viewport for a device context using the ratios formed by the specified multiplicands and divisors.
ScaleWindowExtEx	Modifies the window for a device context using the ratios formed by the specified multiplicands and divisors.
ScreenToClient	Converts the screen coordinates of a specified point on the screen to client coordinates.
SetDisplayAutoRotationPreferences	Sets the orientation preferences of the display.
SetGraphicsMode	Sets the graphics mode for the specified device context.
SetMapMode	Sets the mapping mode of the specified device context.
SetViewportExtEx	Sets the horizontal and vertical extents of the viewport for a device context by using the specified values.
SetViewportOrgEx	Specifies which device point maps to the window origin (0,0).
SetWindowExtEx	Sets the horizontal and vertical extents of the window for a device context by using the specified values.
SetWindowOrgEx	Specifies which window point maps to the viewport origin (0,0).
SetWorldTransform	Sets a two-dimensional linear transformation between world space and page space for the specified device context.