//设置鼠标位置
void SetPosition(POINT point)
{
    ScreenToClient(m_hWnd,&point);
    SetCursorPos(point.x,point.y);
}
//获取鼠标位置
void GetPosition(POINT& point)
{
    GetCursorPos(&point);
    ScreenToClient(m_hWnd,&point);
}