c# 如何把摄像头的视频保存成avi?
灰鸟会灰 2010-03-10 04:52:10 c# 如何把摄像头的视频保存成avi?
在网上查到一种方法如下
[DllImport("User32.dll")]
public static extern bool SendMessage(IntPtr hWnd, int wMsg, bool wParam, long lParam);
调用
long hBmp = Marshal.StringToHGlobalAnsi(path).ToInt64();
VideoAPI.SendMessage(hwndC, WM_CAP_FILE_SET_CAPTURE_FILEA, 0, hBmp);
为什么 long hBmp = Marshal.StringToHGlobalAnsi(path).ToInt64();会出现转换错误?