GHI_CMD_VRAM - Syntax

Description: 

GHI_CMD_VRAM is optional and is called to request allocation of off-screen 
video memory. 

#include <GRADD.h>

GID      gid;         /*  ID of the GRADD. */
ULONG    ulFunction;  /*  Set equal to GHI_CMD_VRAM. */
PVOID    pIn;         /*  Pointer to a VRAMIN data structure. */
PVOID    pOut;        /*  Pointer to a function-specific output data structure. */
ULONG    rc;          /*  Return codes. */

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