WM_CLOSE

The WM_CLOSE message is sent as a signal that a window or an application should terminate.

WM_CLOSE 
 

Parameters

This message has no parameters.

Return Values

If an application processes this message, it should return zero.

Default Action

The DefWindowProc function calls the DestroyWindow function to destroy the window.

Remarks

An application can prompt the user for confirmation, prior to destroying a window, by processing the WM_CLOSE message and calling the DestroyWindow function only if the user confirms the choice.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.

See Also

Windows Overview, Window Messages, DefWindowProc, DestroyWindow