For complete code, refer to the CNVWM demo.
LPTSTR OLE2A(LPCOLESTR lpw) { static CHAR convert[512]; if(!lpw) return NULL; convert[0] = '\0'; WideCharToMultiByte(CP_ACP, 0, lpw, -1, convert, 512, NULL, NULL); return convert; } BOOL IltmmWMProfile_get_Version_Example ( ) { long count = 0; long streamCount = 0; long versionNum = 0; long lVersion; char data[10]; IltmmWMProfile *pProfile = NULL; IltmmWMProfileManager *pProfileManager = NULL; BSTR bstrString; int i; // Create a profile manager HRESULT hr = CoCreateInstance(&CLSID_ltmmWMProfileManager, NULL, CLSCTX_INPROC_SERVER, &IID_IltmmWMProfileManager, (void**) &pProfileManager); if(FAILED(hr)) { return TRUE; } // show only system profiles for version ltmmWMT_VER_4_0 IltmmWMProfileManager_get_SystemProfileVersion(pProfileManager, &lVersion); if(lVersion != ltmmWMT_VER_4_0) { IltmmWMProfileManager_Release(pProfileManager); return TRUE; } hr = IltmmWMProfileManager_get_SystemProfileCount(pProfileManager, &count); if(FAILED(hr)) { IltmmWMProfileManager_Release(pProfileManager); return TRUE; } for(i = 0; i < count; i++) { hr = IltmmWMProfileManager_LoadSystemProfile(pProfileManager, i, &pProfile); if(FAILED(hr)) { IltmmWMProfileManager_Release(pProfileManager); return TRUE; } // Display the name IltmmWMProfile_get_Name(pProfile, &bstrString); printf ("%s", OLE2A(bstrString)); SysFreeString(bstrString); // Add the description, version and the stream count IltmmWMProfile_get_Description(pProfile, &bstrString); printf ("%s", OLE2A(bstrString)); SysFreeString(bstrString); IltmmWMProfile_get_Version(pProfile, &versionNum); switch(versionNum) { case ltmmWMT_VER_4_0: printf ("%s", "ltmmWMT_VER_4_0"); break; case ltmmWMT_VER_7_0: printf ("%s", "ltmmWMT_VER_7_0"); break; case ltmmWMT_VER_8_0: printf ("%s", "ltmmWMT_VER_8_0"); break; case ltmmWMT_VER_9_0: printf ("%s", "ltmmWMT_VER_9_0"); break; default: printf ("%s", "UNKNOWN"); break; }; // Display the number of streams IltmmWMProfile_get_StreamCount(pProfile, &streamCount); printf ("%s", ltoa(streamCount, data, 10)); IltmmWMProfile_Release(pProfile); pProfile = NULL; } IltmmWMProfileManager_Release(pProfileManager); pProfileManager = NULL; return TRUE; }