监听button窗口鼠标mouse_over的消息

通过setwindowlong 监听button的消息，是不能接收到mouse_over和mouse_leave的消息的，需要通过mouse_move消息来解决，主要代码如下：

TRACKMOUSEEVENT tme;
case WM_MOUSEMOVE:
if (!pBtnRecord->bTracking){

tme.cbSize = sizeof(TRACKMOUSEEVENT);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = hwnd;
tme.dwHoverTime = 50;
pBtnRecord->bTracking = TrackMouseEvent(&tme);
}

break;