## Presentation Device Driver Reference for OS/2

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### GreIntersectClipRectangle

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    Syntax
    Parameters
    Returns
    Remarks
    Glossary

Simulation support:

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

Description

GreIntersectClipRectangle sets the new clipping region to the intersection of the current clip region and the specified rectangle.

This function is supported by the graphics engine and can be hooked by the presentation driver.

    #define INCL_GRE_CLIP

    #include <os2.h>

    HDC       hdc;        /*  Device context handle. */

    PRECTL    prclRect;   /*  Pointer to rectangle (RECTL structure) in world or device coordinates: */

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

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

    LONG      rc;         /*  Return codes. */

    rc = GreIntersectClipRectangle(hdc, prclRect,

           pInstance, lFunction);