pParam1 (PULONG) - input

A pointer to a DENPARAMS structure:

ulStateInfo

Value returned by FillPhysicalDeviceBlock.
ulType
Type of device context. Defined values are:

OD_QUEUED
OD_DIRECT
OD_INFO
OD_MEMORY

For details, see DevOpenDC in the Presentation Manager Programming Reference.
ulHDC
Device context handle.

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