## Presentation Device Driver Reference for OS/2

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### GreSetGraphicsField - Syntax

Simulation support:

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

Description:

GreSetGraphicsField sets the boundaries of the graphics field (clip) limits in page-coordinate space. The boundaries are inclusive so that points on them are not clipped. By default, no clipping is performed.

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=NGreSetGraphicsField. */

    BOOL      fSuccess;           /*  Return codes. */

    fSuccess = GreSetGraphicsField(hdc, prclGraphicsField,

                 pInstance, lFunction);