CWnd派生的控件处理MouseMove, MouseHover, MouseLeave

控件的Notify属性要为TRUE, WM_MOUSEMOVE就可以用MFC标准消息映射接收到.

要处理WM_MOUSEHOVER和WM_MOUSELEAVE, 需要在OnMouseMove里写入:

    TRACKMOUSEEVENT sEvent = 
    {
        sizeof(TRACKMOUSEEVENT), 
        TME_LEAVE|TME_HOVER, 
        GetSafeHwnd(), 
        5
    };
    _TrackMouseEvent(&sEvent);

才可以接收到hover, leave消息.