## Presentation Device Driver Reference for OS/2

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### GreRealizePalette - Syntax

Simulation support:

This function is simulated by a handling routine in Revision 2.0 (or higher ) of the graphics engine.

Description

GreRealizePalette is called by the Window Manager during processing of a call to WinRealizePalette. GreRealizePalette takes a logical palette and assigns it slots in the hardware palette.

This function can be hooked by the presentation driver.

    #define INCL_GRE_PALETTE

    #include <os2.h>

    HDC       hdc;             /*  Device context handle. */

    PULONG    pflType;         /*  Specifies whether the DC is a foreground or background window. */

    PULONG    pcSlotsChanged;  /*  Pointer to the returned count of hardware slots changed. */

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

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

    ULONG     rc;              /*  Return codes. */

    rc = GreRealizePalette(hdc, pflType, pcSlotsChanged,

           pInstance, lFunction);