## Presentation Device Driver Reference for OS/2

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### GreSetModelXform - Syntax

Simulation support:

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

Description

GreSetModelXform sets the model transform matrix elements as specified.

This function can be hooked by the presentation driver.

    #define INCL_GRE_XFORMS

    #include <os2.h>

    HDC       hdc;          /*  Device context handle. */

    PXFORM    paXformData;  /*  Pointer to an array. */

    LONG      flOptions;    /*  Specifies how the supplied array is used to set the matrix. Valid values are: */

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

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

    BOOL      fSuccess;     /*  Return codes. */

    fSuccess = GreSetModelXform(hdc, paXformData,

                 flOptions, pInstance, lFunction);