WM_ICONERASEBKGND

The WM_ICONERASEBKGND message is sent to a minimized window when the background of the icon must be filled before painting the icon. A window receives this message only if a class icon is defined for the window; otherwise, WM_ERASEBKGND is sent.

WM_ICONERASEBKGND 
hdc = (HDC) wParam; // handle to device context 
 

Parameters

hdc

Value of wParam. Handle to the device context of the icon.

Return Values

An application should return nonzero if it processes this message.

Remarks

The DefWindowProc function fills the icon background with the class background brush of the parent window.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in winuser.h.

See Also

Icons Overview, Icon Messages, DefWindowProc, WM_ERASEBKGND