WM_DISPLAYCHANGE

The WM_DISPLAYCHANGE message is sent to all windows when the display resolution has changed.

WM_DISPLAYCHANGE 
cBitsPerPixel = wParam; 
cxScreen = LOWORD(lParam); 
cyScreen = HIWORD(lParam); 
 

Parameters

cBitsPerPixel

Specifies the new image depth of the display in bits per pixel.

cxScreen

Specifies the new horizontal resolution of the screen.

cyScreen

Specifies the new vertical resolution of the screen.

QuickInfo

  Windows NT: Requires version 4.0 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in winuser.h.

See Also

Painting and Drawing Overview, Painting and Drawing Messages