WM_KILLFOCUS

The WM_KILLFOCUS message is sent to a window immediately before it loses the keyboard focus.

WM_KILLFOCUS 
hwndGetFocus = (HWND) wParam; // handle to window receiving focus 
 

Parameters

hwndGetFocus

Value of wParam. Handle to the window that receives the keyboard focus (may be NULL).

Return Values

An application should return zero if it processes this message.

Remarks

If an application is displaying a caret, the caret should be destroyed at this point.

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

Keyboard Input Overview, Keyboard Input Messages, SetFocus, WM_SETFOCUS