description | ms.assetid | title | ms.topic | ms.date |
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The WM\_DISPLAYCHANGE message is sent to all windows when the display resolution has changed. |
5a6111fd-648e-41a9-aaf8-e5d93f5d54cd |
WM_DISPLAYCHANGE message (Winuser.h) |
reference |
05/31/2018 |
The WM_DISPLAYCHANGE message is sent to all windows when the display resolution has changed.
A window receives this message through its WindowProc function.
LRESULT CALLBACK WindowProc(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
);
-
wParam
-
The new image depth of the display, in bits per pixel.
-
lParam
-
The low-order word specifies the horizontal resolution of the screen.
The high-order word specifies the vertical resolution of the screen.
This message is only sent to top-level windows. For all other windows it is posted.
Requirement | Value |
---|---|
Minimum supported client |
Windows 2000 Professional [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
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