IWMSClassObject Interface
Note
This interface is available only on Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition; and Windows Server 2008.
The server sends your plug-in a pointer to an IWMSClassObject interface when it calls the IWMSBasicPlugin::InitializePlugin method. You can use this pointer to create the following objects for internal use by your custom plug-in:
The IWMSCommandContextIWMSCommandContext Interface contains methods that enable your plug-in to retrieve and specify name-value pairs that describe client requests and server responses. For more information, see Command Context.
The IWMSContentDescriptionList interface contains methods that enable your plug-in to manage a Content Description Context for each item in a playlist.
The IWMSContextIWMSContext Interface contains methods that enable your plug-in to retrieve and specify general context values. For more information, see Contexts.
The IWMSDataContainerVersionIWMSDataContainerVersion Interface contains methods that enable your plug-in to specify and retrieve information about cached content and to compare the content to that stored on an origin server.
The IWMSPacketIWMSPacket Interface contains methods that enable you to manage the buffers, attributes, and headers of a data packet.
The IWMSPacketListIWMSPacketList Interface contains methods that enable you to manage a data packet list. Typically, this is used by data source plug-ins.
The IWMSStreamHeaderIWMSStreamHeader Interface contains methods that enable your plug-in to specify and retrieve header information about a Windows Media stream.
The IWMSStreamHeaderListIWMSStreamHeaderList Interface contains a collection of IWMSStreamHeader interfaces.
In addition to the methods inherited from IUnknown, the IWMSClassObject interface exposes the following methods.
Method |
Description |
|---|---|
AllocIWMSCommandContext |
Allocates a command context that contains information about requests made by a client, and responses made by the server to those requests. |
AllocIWMSContext |
Allocates a context identified by the WMS_CONTEXT_TYPE enumeration. |
AllocIWMSPacket |
Allocates a data packet for use by a custom data source plug-in. |
AllocIWMSPacketList |
Allocates a packet list for use by a custom data source plug-in. |
CreateInstance |
Generic method for allocating objects. |