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IWMSCacheProxyServerCallback.OnCancelDownloadContent (C#)

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IWMSCacheProxyServerCallback.OnCancelDownloadContent (C#)

The OnCancelDownloadContent method is called by the server to respond when the plug-in calls IWMSCacheProxyServer.CancelDownloadContent.

Syntax

Parameters

lHr

[in] int indicating whether the call to IWMSCacheProxyServer.CancelDownloadContent succeeded.

varContext

[in] object containing a value defined by the plug-in when it called IWMSCacheProxyServer.CancelDownloadContent. For example, your plug-in can use this parameter to persist state information. The server does not alter this value and passes it back when calling OnCancelDownloadContent.

Return Values

This method does not return a value. To report an error, the plug-in can throw a COMException object to the server. If the plug-in uses the IWMSEventLog object to log error information, it is recommended that it throw NS_E_PLUGIN_ERROR_REPORTED (0xC00D157D). 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 object to send custom error information to the Windows Event Viewer, throwing NS_E_PLUGIN_ERROR_REPORTED stops the server from also logging to the event viewer. For more information about plug-in error information, see Identifying Plug-in Errors.

Example Code

// Minimal implementation.
void IWMSCacheProxyServerCallback.OnCancelDownloadContent(
                                                      int lHr,
                                                      object varContext)
{
  return;
}

Requirements

Reference: Add a reference to Microsoft.WindowsMediaServices.

Namespace: Microsoft.WindowsMediaServices.Interop.

Assembly: Microsoft.WindowsMediaServices.dll.

Library: WMSServerTypeLib.dll.

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

See Also

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