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Registering Rendering Plug-ins (deprecated)
This page documents a feature that may be unavailable in future versions of Windows Media Player and the Windows Media Player SDK.
Like other COM DLLs, you must register Windows Media Player rendering plug-ins to make them useable. Typically, use the regsvr32.exe utility to manually perform registration tasks. The Windows Media Player Plug-in Wizard creates files that contain registration scripts. These files have an .rgs file name extension. You can also create a setup program that copies your files and registers the DLLs.
You must invoke the registration methods on the IWMPMediaPluginRegistrar interface in the implementation blocks of the DllRegisterServer and the DllUnregisterServer functions, which are functions that are exported by COM DLLs. The Windows Media Player registration methods perform the necessary registration housekeeping to allow Windows Media Player to recognize your DLL file as a Windows Media Player plug-in so that it can be presented as an option to the user.
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