VC++ 获取鼠标状态,获取鼠标弹起消息

LRESULT CALLBACK TestProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)

{

    switch (msg)

    {

    case WM_LBUTTONDOWN: //左键按下

        {

            SetCapture(hwnd);

        }

        break;

    case WM_MOUSEMOVE: //鼠标按下移动

        {

                if(GetCapture() ==  hwnd)

                {

                   //鼠标按下并移动...

                }

        }

        break;

    case WM_LBUTTONUP: //左键弹起

        {

            if(GetCapture()  ==  hwnd)

                ReleaseCapture(); //当前线程中的窗口释放鼠标捕获，并恢复通常的鼠标输入处理。

        }

        break;



        return 0;

    }



}