WM_WINDOWPOSCHANGED
The
WM_WINDOWPOSCHANGED message is sent to a window whose size, position, or place
in the Z order has changed as a result of a call to the SetWindowPos function or another
window-management function.
WM_WINDOWPOSCHANGED
lpwp = (LPWINDOWPOS) lParam; // points to size and
position data
Parameters
lpwp
Value of lParam.
Points to a WINDOWPOS
structure that contains information about the window s new size and position.
Return Values
If an
application processes this message, it should return zero.
Default Action
The DefWindowProc
function sends the WM_SIZE and WM_MOVE messages to the window.
Remarks
The WM_SIZE
and WM_MOVE messages are not sent if an application handles the
WM_WINDOWPOSCHANGED message without calling DefWindowProc. It is more
efficient to perform any move or size change processing during the
WM_WINDOWPOSCHANGED message without calling DefWindowProc.
See Also