The WM_KILLFOCUS message is sent to a window immediately before it loses the keyboard focus.
Syntax
WM_KILLFOCUS
WPARAM wParam
LPARAM lParam;
Parameters
- wParam
-
Handle to the window that receives the keyboard focus. This parameter can be NULL.
- lParam
-
This parameter is not used.
Return Value
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.
While processing this message, do not make any function calls that display or activate a window. This causes the thread to yield control and can cause the application to stop responding to messages. For more information, see Message Deadlocks.
Notification Requirements
| Minimum DLL Version |
None |
|---|
| Header | Declared in Winuser.h, include Windows.h |
|---|
| Minimum operating systems |
Windows 95, Windows NT 3.1 |
|---|
See Also