PortCls Support by Operating System
The following lists contain all the functions and interfaces that the PortCls system driver (Portcls.sys) supports. If a list item is preceded by an asterisk (*), then PortCls supports that item only in Windows XP and later. If a list item is preceded by a double asterisk (**), then PortCls supports that item only in Windows Vista and later. All other list items are supported by all versions of PortCls (Windows 2000 and later, and Windows Me/98).
Audio Port Class Functions
PcCompletePendingPropertyRequest
* PcForwardContentToDeviceObject
* PcForwardContentToFileObject
PcRegisterAdapterPowerManagement
PcRegisterPhysicalConnectionFromExternal
PcRegisterPhysicalConnectionToExternal
Audio Helper Object Interfaces
* IDrmPort
** IUnregisterPhysicalConnection
Audio Port Object Interfaces
** IPortWaveRT
Audio Miniport Object Interfaces
Audio Miniport Auxiliary Interfaces
Audio Stream Object Interfaces
Audio Power Management Interfaces
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