cscの作法 その393

概要

cscの作法、調べてみた。
練習問題、やってみた。

練習問題

directshowlibでwmvファイルを再生せよ。

サンプルコード

using System;
using System.Runtime.InteropServices;
using System.Runtime.InteropServices.ComTypes;
using DirectShowLib;

namespace App
{
	class Program {
		static void Main(string[] args) {
			Console.WriteLine("start");
			IGraphBuilder pGraphBuilder = (DirectShowLib.IGraphBuilder) new FilterGraph();
			IMediaControl pMediaControl = (DirectShowLib.IMediaControl) pGraphBuilder;
			IMediaEvent pMediaEvent = (DirectShowLib.IMediaEvent) pGraphBuilder;
			pMediaControl.RenderFile(@"test1.wmv");
			IVideoWindow pVideoWindow = (DirectShowLib.IVideoWindow) pGraphBuilder;
			pVideoWindow.put_FullScreenMode(OABool.True);
			pMediaControl.Run();
			EventCode code;
			pMediaEvent.WaitForCompletion(1000, out code);
			pVideoWindow.put_FullScreenMode(OABool.False);
			Marshal.ReleaseComObject(pGraphBuilder);
			pGraphBuilder = null;
			Marshal.ReleaseComObject(pMediaControl);
			pMediaControl = null;
			Marshal.ReleaseComObject(pMediaEvent);
			pMediaEvent = null;
			Console.WriteLine("end");
		}
	}
}

以上。