WM_NCMOUSELEAVE message

Posted to a window when the cursor leaves the nonclient area of the window specified in a prior call to TrackMouseEvent.

A window receives this message through its WindowProc function.

#define WM_NCMOUSELEAVE                 0x02A2

Parameters

wParam

This parameter is not used and must be zero.

lParam

This parameter is not used and must be zero.

Return value

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

Remarks

All tracking requested by TrackMouseEvent is canceled when this message is generated. The application must call TrackMouseEvent when the mouse reenters its window if it requires further tracking of mouse hover behavior.

Requirements

Minimum supported client
Windows 2000 Professional [desktop apps only]
Minimum supported server
Windows 2000 Server [desktop apps only]
Header
Winuser.h (include Windows.h)

See also

Reference

TrackMouseEvent

TRACKMOUSEEVENT

WM_SYSCOMMAND

WM_MOUSELEAVE

Conceptual

Mouse Input