DWM Messages

This section contains information about the Desktop Window Manager (DWM) messages.

In this section

TopicDescription

WM_DWMCOLORIZATIONCOLORCHANGED

Informs all top-level windows that the colorization color has changed.

WM_DWMCOMPOSITIONCHANGED

Informs all top-level windows that DWM composition has been enabled or disabled.

Note  As of Windows 8, DWM composition is always enabled, so this message is not sent regardless of video mode changes.

WM_DWMNCRENDERINGCHANGED

Sent when the non-client area rendering policy has changed.

WM_DWMSENDICONICLIVEPREVIEWBITMAP

Instructs a window to provide a static bitmap to use as a live preview (also known as a Peek preview) of that window.

WM_DWMSENDICONICTHUMBNAIL

Instructs a window to provide a static bitmap to use as a thumbnail representation of that window.

WM_DWMWINDOWMAXIMIZEDCHANGE

Sent when a DWM composed window is maximized.

 

 

 

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