## Presentation Device Driver Reference for OS/2

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### OS2_PM_DRV_ENABLE: Subfunction 0Eh - QueryDeviceSurface - Syntax

Description:

OS2_PM_DRV_ENABLE: QueryDeviceSurface provides the needed information to the graphics engine for handling the new Device Driver Interface (DDI) architecture.

    #include <os2.h>

    ULONG    ulSubfunction;  /*  0Eh. */

    PLONG    pParam1;        /*  Pointer to the DEVICESURFACE data structure. */

    LONG     pParam2;        /*  Long integer returned from FillPhysicalDeviceBlock. */

    LONG     rc;             /*  Return codes. */

    rc = QueryDeviceSurface(ulSubfunction, pParam1,

           pParam2);