Description:

OS2_PM_DRV_ENABLE: FillLogicalDeviceBlock is called on the first occasion that a specific application or process opens a device context that uses the called presentation driver.

#include <os2.h>

ULONG     ulSubfunction;   /*  01h. */
PULONG    pParam1;
PLONG     pParam2;
PLONG     pDispatchTable;
LONG      rc;              /*  Return codes. */

rc = FillLogicalDeviceBlock(ulSubfunction,
       pParam1, pParam2, pDispatchTable);