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IWMSCacheItemCollection::GetCount

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IWMSCacheItemCollection::GetCount

The GetCount method retrieves the number of IWMSCacheItemDescriptor interfaces in the collection.

Syntax

  HRESULT GetCount(
  
  long*
  
  lNumCacheDescriptors
  
  );

Parameters

lNumCacheDescriptors

[out] long containing the number of cache descriptors.

Return Values

If the method succeeds, the plug-in must return S_OK. To report an error, the plug-in can return any HRESULT other than S_OK. If the plug-in uses the IWMSEventLog interface to log error information directly to the Windows Event Viewer, it is recommended that it return NS_E_PLUGIN_ERROR_REPORTED. Typically, the server attempts to make plug-in error information available to the server object model, the Windows Event Viewer, and the troubleshooting list in the details pane of the Windows Media Services MMC. However, if the plug-in uses the IWMSEventLog interface to send custom error information to the Windows Event Viewer, returning NS_E_PLUGIN_ERROR_REPORTED stops the server from also logging to the event viewer. For more information about retrieving plug-in error information, see Identifying Plug-in Errors.

Remarks

The IWMSCacheItemDescriptor interface retrieves the size, version number, expiration date, and URL of cached content.

Example Code

The following example assumes that the cache plug-in maintains a count of the number of entries added to the collection.

Requirements

Header: streamcache.h.

Library: WMSServerTypeLib.dll.

Platform: Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition; Windows Server 2008.

See Also

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