C# directshow 问题

wolf_Knight 2010-04-07 10:13:41



                   Type comtype = null;

		object comobj = null;		

		comtype = Type.GetTypeFromCLSID( Clsid.FilterGraph );

		if( comtype == null )

				throw new NotSupportedException( "DirectX (8.1 or higher) not installed?" );

			comobj = Activator.CreateInstance( comtype );

			graphBuilder = (IGraphBuilder) comobj; comobj = null;			

			int hr = graphBuilder.RenderFile( clipFile, null );

			if( hr < 0 )

				Marshal.ThrowExceptionForHR( hr );

                           .......后面代码就不写了........

如上代码，wince 5.0 ,我执行循环播放，比如播放完成后，我把上面的代码重新执行一次，更换clipFile的值；
在int hr = graphBuilder.RenderFile( clipFile, null );这里经常(不是每次都有错误)会出现hr=-2147220970错误，查找错误提示后得知：An object or name was not found. 0x80040216 但是我确认这个文件是有的。

...全文