## Graphics Adapter Device Driver Reference

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### HWEntry - Parameters

gid (GID) - input ID of the GRADD.

ulFunction (ULONG) - input Set to appropriate GHI_CMD_ function.

This parameter is set to one of the GHI_CMD_ functions shown in the table at the beginning of this section.

pIn (PVOID) - input Pointer to a GHI_-specific input data structure.

pOut (PVOID) - output Pointer to a GHI_-specific output data structure.

rc (ULONG) - returns Return codes.

Valid values are dictated by the applicable GHI_CMD_ function.