Presentation drivers must support the following OS2_PM_DRV_ENABLE subfunctions:

01h

FillLogicalDeviceBlock

FillPhysicalDeviceBlock

DisablePhysicalDeviceBlock

EnableDeviceContext

DisableDeviceContext

SaveDCState

RestoreDCState

ResetDCState

CompleteOpenDC

BeginCloseDC

InstallPMEngineDisplayHooks

Note: The OS2_PM_DRV_ENABLE function should return -1 (ERROR_MINUS) for Subfunction 03h, and numbers greater than 0Ch.