IGraphBuilder    *gGraph = NULL;IMediaControl    *gControl = NULL;IMediaEvent      *gEvent = NULL;        

bool CreateSimplerPlayer(PTSTR pstrFileName){// init comHRESULT hr = CoInitialize(NULL);if (FAILED(hr))return false;// init gragh builderhr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (void**)&gGraph);if (FAILED(hr))return false;// query controler interface in graphbuilderhr = gGraph->QueryInterface(IID_IMediaControl, (void**)&gControl);if (FAILED(hr))return false;// query event interface in graphbuilderhr = gGraph->QueryInterface(IID_IMediaEvent, (void**)&gEvent);if (FAILED(hr))return false;hr = gGraph->QueryInterface(IID_IBasicVo, (void**)&gVideo);if (FAILED(hr))return false;
// read a filehr = gGraph->RenderFile(pstrFileName, NULL);if (!FAILED(hr)){hr = gControl->Run();if (SUCCEEDED(hr)){long evCode;gEvent->WaitForCompletion(INFINITE, &evCode);return true;}}return false;}

TCHAR szBuffer[MAX_PATH] = { 0 };OPENFILENAME file = { 0 };file.hwndOwner = NULL;file.lStructSize = sizeof(file);file.lpstrFilter = _T("所有文件(*.*)\0*.*\0Exe文件(*.exe)\0*.exe\0");//要选择的文件后缀 file.lpstrInitialDir = _T("E:\\");//默认的文件路径 file.lpstrFile = szBuffer;//存放文件的缓冲区 file.nMaxFile = sizeof(szBuffer) / sizeof(*szBuffer);file.nFilterIndex = 0;file.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_EXPLORER;//标志如果是多选要加上OFN_ALLOWMULTISELECTBOOL bSel = GetOpenFileName(&file);//cout << file.lpstrFile << endl;
SimplePlayer::CreateSimplerPlayer(file.lpstrFile);