IWMSPlaylist::get_IsStreamCued
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IWMSPlaylist::get_IsStreamCued
The get_IsStreamCued method retrieves a Boolean value indicating whether a specific playlist element has been initialized and is ready to stream.
Syntax
HRESULT get_IsStreamCued( IXMLDOMElement* pPlaylistEntry, VARIANT_BOOL* pVal );
Parameters
pPlaylistEntry
[in] Pointer to a playlist element.
pVal
[out] Pointer to a VARIANT_BOOL indicating whether the element has been initialized.
Return Values
If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.
| Return code | Number | Meaning |
| E_INVALIDARG | 0x80070057 | pPlaylistEntry is not a node in the playlist. |
| E_POINTER | 0x80004003 | pVal or pPlaylistEntry is a NULL pointer argument. |
Example Code
#include <windows.h>
#include <atlbase.h> // Includes CComVariant.
#include "wmsserver.h"
// Declare variables and interfaces.
IWMSServer *pServer;
IWMSPlayers *pPlayers;
IWMSPlayer *pPlayer;
IWMSPlaylist *pPlaylist;
IXMLDOMElement *pCurPlaylistEntry;
IXMLDOMElement *pPlaylistEntry;
HRESULT hr;
VARIANT_BOOL bVal;
CComVariant varIndex;
long lCount;
// Initialize the COM library and retrieve a pointer
// to an 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 an IWMSPlayers interface
// and retrieve the total count of current connections.
hr = pServer->get_Players(&pPlayers);
if (FAILED(hr)) goto EXIT;
hr = pPlayers->get_Count(&lCount);
if (FAILED(hr)) goto EXIT;
// Retrieve information about each requested playlist.
for (long x = 0; x < lCount; x++)
{
varIndex = x;
hr = pPlayers->get_Item(varIndex, &pPlayer);
if (FAILED(hr)) goto EXIT;
// Retrieve the playlist requested by the client
// if one exists.
hr = pPlayer->get_RequestedPlaylist(&pPlaylist);
if (FAILED(hr)) goto EXIT;
// Retrieve information about the current playlist entry.
hr = pPlaylist->get_CurrentPlaylistEntry(&pPlaylistEntry);
if (FAILED(hr)) goto EXIT;
// Retrieve information about each playlist entry.
while (pPlaylistEntry != NULL)
{
pCurPlaylistEntry = pPlaylistEntry;
// Retrieve the next playlist entry.
hr = pPlaylist->get_CallerEntry(pCurPlaylistEntry,
&pPlaylistEntry);
if (FAILED(hr)) goto EXIT;
// Retrieve a Boolean value indicating whether this
// playlist entry is cued.
hr = pPlaylist->get_IsStreamCued(pPlaylistEntry, &bVal);
if (FAILED(hr)) goto EXIT;
}
// Release temporary COM objects.
pPlayer->Release();
pPlaylist->Release();
pPlaylistEntry->Release();
pCurPlaylistEntry->Releas();
}
EXIT:
// TODO: Release temporary COM objects and uninitialize COM.
Requirements
Header: wmsserver.h
Library: WMSServerTypeLib.dll
Platform: Windows ServerĀ 2003 family, Windows ServerĀ 2008 family.
See Also
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