Get register extensions for DirectShow automated rendering (e.g. 'avi mov mp4 ts mpg' etc.)

Public Overridable Sub ReaderRegisteredExtensionsGet( _
   ByRef _pbsExtensionsList As String _
) 

public virtual void ReaderRegisteredExtensionsGet( 
   out string _pbsExtensionsList
)

public procedure ReaderRegisteredExtensionsGet( 
   Out  _pbsExtensionsList: String
); virtual; 

public: virtual void ReaderRegisteredExtensionsGet( 
   [PARAMFLAG::Out] BSTR* _pbsExtensionsList
)