DirectShow（一）控制台程序

• 环境：xp+vs2005+DXSDK9_sumer2004
• 配置：

• 代码：

#include "stdafx.h"
#include <DShow.h>

int _tmain(int argc, _TCHAR* argv[])
{
	IGraphBuilder *pGraph = NULL;
	IMediaControl *pControl = NULL;
	IMediaEvent   *pEvent = NULL;

	// Initialize the COM library.
	HRESULT hr = CoInitialize(NULL);
	if (FAILED(hr))
	{
		printf("ERROR - Could not initialize COM library");
		return 1;
	}

	// Create the filter graph manager and query for interfaces.
	hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, 
		IID_IGraphBuilder, (void **)&pGraph);
	if (FAILED(hr))
	{
		printf("ERROR - Could not create the Filter Graph Manager.");
		return 1;
	}

	hr = pGraph->QueryInterface(IID_IMediaControl, (void **)&pControl);
	hr = pGraph->QueryInterface(IID_IMediaEvent, (void **)&pEvent);

	// Build the graph. IMPORTANT: Change this string to a file on your system.
	hr = pGraph->RenderFile(L"E:\\red_sun.wmv", NULL);
	if (SUCCEEDED(hr))
	{
		// Run the graph.
		hr = pControl->Run();
		if (SUCCEEDED(hr))
		{
			// Wait for completion.
			long evCode;
			pEvent->WaitForCompletion(INFINITE, &evCode);

			// Note: Do not use INFINITE in a real application, because it
			// can block indefinitely.
		}
	}
	pControl->Release();
	pEvent->Release();
	pGraph->Release();
	CoUninitialize();

	return 0;
}

• 没问题的话即可在桌面看到一播放窗口。
• 参考：DirectShow帮助文档