## Presentation Device Driver Reference for OS/2

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### GreGetHandle - Syntax

Description

GreGetHandle returns the handle or variable (stored in the DC corresponding to iIndex) previously set by GreSetHandle.

This function is supported by the graphics engine.

    #define INCL_GRE_DCS

    #include <os2.h>

    HDC      hdc;        /*  Device context handle. */

    ULONG    iIndex;     /*  Index value. */

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

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

    LONG     rc;         /*  Return code. */

    rc = GreGetHandle(hdc, iIndex, pInstance,

           lFunction);