IWMSActiveStream::get_Name
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IWMSActiveStream::get_Name
The get_Name method retrieves the name of the media stream.
Syntax
HRESULT get_Name( BSTR* pVal );
Parameters
pVal
[out] Pointer to a BSTR containing the name of the stream.
Return Values
If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.
Return code | Number | Description |
E_POINTER | 0x80004003 | pVal is a NULL pointer argument. |
Example Code
#include <windows.h> #include <atlbase.h> // Includes CComBSTR and CComVariant. #include "wmsserver.h" // Declare variables and interfaces. HRESULT hr; IWMSServer *pServer; IWMSPlayers *pPlayers; IWMSPlayer *pPlayer; IWMSPlaylist *pPlaylist; IWMSActiveMedia *pActiveMedia; IWMSActiveStreams *pActiveStreams; IWMSActiveStream *pActiveStream; CComVariant varIndex; CComBSTR bstrName; long lCount; // Initialize the COM library and retrieve a pointer // to the IWMSServer interface. hr = CoInitialize(NULL); hr = CoCreateInstance(CLSID_WMSServer, NULL, CLSCTX_ALL, IID_IWMSServer, (void **)&pServer); if (FAILED(hr)) goto EXIT; // Retrieve a pointer to the IWMSPlayers interface // and retrieve the number of connected players. hr = pServer->get_Players(&pPlayers); if (FAILED(hr)) goto EXIT; hr = pPlayers->get_Count(&lCount); if (FAILED(hr)) goto EXIT; // If players are connected, retrieve a pointer to // an IWMSPlayer interface containing the first player. if (lCount > 0) { varIndex = 0; hr = pPlayers->get_Item(varIndex, &pPlayer); if (FAILED(hr)) goto EXIT; } // Retrieve the playlist for the player. // NOTE: A valid playlist file is not always returned. This may be // the case, for example, if the user requested a specific content // file or if a broadcast publishing point is being used. hr = pPlayer->get_RequestedPlaylist(&pPlaylist); if (FAILED(hr)) goto EXIT; if (pPlaylist != NULL) { // Retrieve a pointer to the IWMSActiveMedia interface. hr = pPlaylist->get_CurrentMediaInformation(&pActiveMedia); if (FAILED(hr)) goto EXIT; // Retrieve a pointer to the IWMSActiveStreams interface // and retrieve the total number of active streams. hr = pActiveMedia->get_Streams(&pActiveStreams); if (FAILED(hr)) goto EXIT; hr = pActiveStreams->get_Count(&lCount); if (FAILED(hr)) goto EXIT; // Retrieve information about each active stream. for (int x = 0; x < lCount; x++) { // Retrieve a pointer to the IWMSActiveStream interface. varIndex = x; hr = pActiveStreams->get_Item(varIndex, &pActiveStream); if (FAILED(hr)) goto EXIT; // Retrieve the stream name. hr = pActiveStream->get_Name(&bstrName); if (FAILED(hr)) goto EXIT; // Release temporary COM objects. pActiveStream->Release(); } } EXIT: // TODO: Release temporary COM objects and uninitialize COM.
Requirements
Header: wmsserver.h.
Library: WMSServerTypeLib.dll.
Platform: Windows Server 2003 family, Windows Server 2008 family.
See Also
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