GHI_CMD_QUERYMODES - Syntax

Description: 

GHI_CMD_QUERYMODES is mandatory and is called to query the available video 
mode information. The GRADD is expected to respond with information 
regarding the video graphics modes supported by the GRADD. 

#include <GRADD.h>

GID      gid;         /*  ID of the GRADD. */
ULONG    ulFunction;  /*  Set equal to GHI_CMD_QUERYMODES. */
PVOID    pIn;         /*  Pointer that identifies a QUERYMODE operation. */
PVOID    pOut;        /*  Pointer to the pIn operation. */
ULONG    rc;          /*  Return codes. */

rc = HWENTRY(gid, ulFunction, pIn, pOut);