High DPI Reference

Functions

Topic	Description
AdjustWindowRectExForDpi	A variant of AdjustWindowRectEx that returns values scaled to a specific DPI.
AreDpiAwarenessContextsEqual	Determines whether two DPI_AWARENESS_CONTEXT values are equivalent.
EnableNonClientDpiScaling	Enables automatic scaling of the non-client area of the specified top-level window.
GetAwarenessFromDpiAwarenessContext	Retrieves the DPI_AWARENESS value from a DPI_AWARENESS_CONTEXT
GetDpiForMonitor	Queries the DPI information associated with a monitor.
GetDpiForSystem	Returns the system DPI.
GetDpiForWindow	Returns the current DPI for the specified window.
GetProcessDpiAwareness	Retrieves the DPI virtualization mode of the specified process.
GetSystemMetricsForDpi	A variant of GetSystemMetrics that returns values scaled to a specific DPI.
GetThreadDpiAwarenessContext	Retrieves the active DPI awareness context for the current thread.
GetWindowDpiAwarenessContext	Retrieves the DPI awareness context for a window.
IsValidDpiAwarenessContext	Determines if a DPI_AWARENESS_CONTEXT is valid and supported by the current system.
LogicalToPhysicalPointForPerMonitorDPI	Converts a point in a window from logical coordinates into physical coordinates, regardless of the DPI awareness of the caller.
PhysicalToLogicalPointForPerMonitorDPI	Converts a point in a window from physical coordinates into logical coordinates, regardless of the DPI awareness of the caller.
SetProcessDpiAwareness	Sets the DPI virtualization mode for the current process.
SetThreadDpiAwarenessContext	Changes the active DPI awareness context for the current thread.
SystemParametersInfoForDpi	A variant of SystemParametersInfo that returns values scaled to a specific DPI.
SetProcessDpiAwarenessContext	Sets the DPI awareness context for the current process.
SetDialogDpiChangeBehavior	Overrides the default per-monitor DPI scaling behavior of a dialog.
GetDialogDpiChangeBehavior	Retrieves the per-monitor DPI scaling behavior of a dialog.
SetDialogControlDpiChangeBehavior	Overrides the default per-monitor DPI scaling behavior of a child window in a dialog.
GetDialogControlDpiChangeBehavior	Retrieves any per-monitor DPI scaling behavior overrides of a child window in a dialog.
OpenThemeDataForDpi	A variant of OpenThemeData that opens theme handles associated with a specific DPI.
GetSystemDpiForProcess	Retrieves the system DPI associated with a given process.
GetDpiFromDpiAwarenessContext	Retrieves the DPI from a given DPI_AWARENESS_CONTEXT handle.
SetThreadDpiHostingBehavior	Overrides the default DPI hosting behavior of the current thread.
GetThreadDpiHostingBehavior	Retrieves the DPI hosting behavior of the current thread.
GetWindowDpiHostingBehavior	Retrieves the DPI hosting behavior of the specified window.

 

Types

Topic	Description
DPI_AWARENESS	Represents DPI coordinate virtualization modes.
DPI_AWARENESS_CONTEXT	A token which represents a DPI virtualization mode and associated behaviors.
DIALOG_CONTROL_DPI_CHANGE_BEHAVIORS	Describes per-monitor DPI scaling behavior overrides for child windows within dialogs.
DIALOG_DPI_CHANGE_BEHAVIORS	Describes per-monitor DPI scaling behavior overrides for dialogs.
MONITOR_DPI_TYPE	Represents the type of DPI associated with a monitor.
PROCESS_DPI_AWARENESS	Represents the DPI coordinate virtualization mode of a process.
DPI_HOSTING_BEHAVIOR	Represents the DPI hosting behavior for a window.

 

Messages

Topic	Description
WM_DPICHANGED	Notifies a top-level window that its DPI has changed.
WM_DPICHANGED_BEFOREPARENT	Notifies a child window that the DPI associated with its containing window has changed. Delivered before the parent window is notified.
WM_DPICHANGED_AFTERPARENT	Notifies a child window that the DPI associated with its containing window has changed. Delivered after the parent window is notified.
WM_GETDPISCALEDSIZE	Allows top-level windows to resize non-linearly in response to DPI changes.