IWMSPlaylistTransformAdmin::get_Shuffle
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IWMSPlaylistTransformAdmin::get_Shuffle
The get_Shuffle method retrieves a Boolean value that indicates whether content in playlist files will be played in a random order.
Syntax
Parameters
pfShuffle
[out] Pointer to a VARIANT_BOOL indicating whether content in playlist files will be played in a random order.
Return Values
If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.
| Return code | Number | Description |
| E_FAIL | 0x80004005 | The server cannot find the WMS Playlist Transform plug-in. |
| E_POINTER | 0x80004003 | The pfShuffle parameter is NULL. |
Example Code
#include <windows.h>
#include <atlbase.h> // Includes CComVariant.
// To access system plug-in interfaces, the
// entire type library must be imported as shown.
#import "WMSServerTypeLib.dll" no_namespace named_guids \
raw_interfaces_only
// Declare variables and interfaces.
IWMSServer *pServer;
IWMSPublishingPoints *pPubPoints;
IWMSPublishingPoint *pPubPoint;
IWMSPlugins *pPlugins;
IWMSPlugin *pPlugin;
IDispatch *pDispatch;
IWMSPlaylistTransformAdmin *pPlaylistTransformAdmin;
HRESULT hr;
VARIANT_BOOL bShuffle;
CComVariant varIndex;
// 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 the IWMSPublishingPoints
// interface and the first publishing point in
// the collection.
hr = pServer->get_PublishingPoints(&pPubPoints);
if (FAILED(hr)) goto EXIT;
varIndex = 0;
hr = pPubPoints->get_Item(varIndex, &pPubPoint);
if (FAILED(hr)) goto EXIT;
// Retrieve a pointer to an IWMSPlugins interface
// containing event handler plug-ins.
hr = pPubPoint->get_EventHandlers(&pPlugins);
if (FAILED(hr)) goto EXIT;
// Retrieve a pointer to the IWMSPlugin interface
// of the plug-in to be configured.
varIndex = "WMS Playlist Transform";
hr = pPlugins->get_Item(varIndex, &pPlugin);
if (FAILED(hr)) goto EXIT;
// Retrieve a pointer to the custom interface
// of the plug-in.
hr = pPlugin->get_CustomInterface(&pDispatch);
if (FAILED(hr)) goto EXIT;
// Query the specific administration interface
// for the plug-in.
hr = pDispatch->QueryInterface(IID_IWMSPlaylistTransformAdmin,
(void **)&pPlaylistTransformAdmin);
if (FAILED(hr)) goto EXIT;
// Retrieve a Boolean value indicating whether content in
// playlist files on this publishing point plays randomly.
hr = pPlaylistTransformAdmin->get_Shuffle(&bShuffle);
if (FAILED(hr)) goto EXIT;
EXIT:
// TODO: Release temporary COM objects and uninitialize COM.
Requirements
Library: WMSServerTypeLib.dll.
Platform: Windows ServerĀ 2003 family, Windows ServerĀ 2008 family.
See Also
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