WM_MOUSELEAVE WM_MOUSEHOVER

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1. error LNK2001: 无法解析的外部符号__imp___TrackMouseEvent@4

解决方案：

#include <CommCtrl.h>

#pragma comment(lib,"Comctl32.lib")

2.WM_MOUSEMOVE 中用::_TrackMouseEvent(&csTME); 开启Windows的WM_MOUSELEAVE，WM_MOUSEHOVER事件支持

3.case WM_MOUSEMOVE:
  {
   m_bTrackMouse=TRUE;
   if (m_bTrackMouse)    //若允许追踪，则。
   {
    TRACKMOUSEEVENT csTME;
    csTME.cbSize = sizeof(csTME);
    csTME.dwFlags = TME_LEAVE|TME_HOVER;
    csTME.hwndTrack = m_hWnd;         //指定要追踪的窗口
    csTME.dwHoverTime = 30;           //鼠标在按钮上停留超过xxms，才认为状态为HOVER
    ::_TrackMouseEvent(&csTME);       //开启Windows的WM_MOUSELEAVE，WM_MOUSEHOVER事件支持
    m_bTrackMouse=FALSE;              //若已经追踪，则停止追踪
   }
  }

4. case WM_MOUSELEAVE:
  {
   m_bTrackMouse=TRUE;
  }

5.case WM_MOUSEHOVER:
{

// what you want to do

}