## Presentation Device Driver Reference for OS/2

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### GreGetGraphicsField - Syntax

Simulation support:

This function is simulated by a handling routine in the graphics engine.

Description

GreGetGraphicsField loads the buffer indicated by prclGraphicsField with the integer values that identify the boundaries of the graphics field.

This function can be hooked by the presentation driver.

    #define INCL_GRE_XFORMS

    #include <os2.h>

    HDC       hdc;                /*  Device context handle. */

    PRECTL    prclGraphicsField;  /*  Pointer to graphics field. */

    PVOID     pInstance;          /*  Pointer to instance data. */

    ULONG     lFunction;          /*  High-order WORD=flags; low-order WORD=NGreGetGraphicsField. */

    BOOL      fSuccess;           /*  Return codes. */

    fSuccess = GreGetGraphicsField(hdc, prclGraphicsField,

                 pInstance, lFunction);