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IWMSEventAuthorizationPlugin.GetAuthorizedEvents (C#)

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IWMSEventAuthorizationPlugin.GetAuthorizedEvents (C#)

The GetAuthorizedEvents method retrieves an array of events that must be authorized by the plug-in.

Syntax

  object

Parameters

This method takes no parameters.

Return Values

This method returns an object containing an array of WMS_EVENT_TYPE enumeration values. 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

The following example illustrates a possible implementation of the GetAuthorizedEvents method for an access control list (ACL) authorization plug-in.

using System.Runtime.InteropServices;

object IWMSEventAuthorizationPlugin.GetAuthorizedEvents()
{

    try
    {
        // Identify the events the plug-in can authorize.
        WMS_EVENT_TYPE[] wmsEvents = {WMS_EVENT_TYPE.WMS_EVENT_DESCRIBE,
                                  WMS_EVENT_TYPE.WMS_EVENT_OPEN,
                                  WMS_EVENT_TYPE.WMS_EVENT_GET_PARAMETER, 
                     WMS_EVENT_TYPE.WMS_EVENT_VALIDATE_PUSH_DISTRIBUTION};

        return (object)wmsEvents;
    }
    catch
    {
        // Throw E_FAIL to the server.
        throw new COMException();
    }
}

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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