录像代码：
            IntPtr hBmp = Marshal.StringToHGlobalAnsi(path);     
            VideoAPI.SendMessage(lwndC, VideoAPI.WM_CAP_FILE_SET_CAPTURE_FILEA,0, hBmp.ToInt32());
            VideoAPI.SendMessage(lwndC, VideoAPI.WM_CAP_SEQUENCE, 0, 0);
录像的时候鼠标一直等待状态，点停止录像程序就未响应！

小弟初学，望大师们不吝赐教！