## Presentation Device Driver Reference for OS/2

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### GreUpdateCursor - Syntax

Simulation support:

This function is mandatory for display drivers. For other drivers, it is simulated by a handling routine in the graphics engine.

Description:

GreUpdateCursor updates the drawn alphanumeric cursor to match the cursor state information contained in the presentation space.

    #define INCL_AVIOP

    #include <os2.h>

    HDC                       hdc;        /*  The device context handle. */

    VioPresentationSpace     *pVioPS;     /*  A pointer to the Vio presentation space. */

    PVOID                     pInstance;  /*  A pointer to instance data. */

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

    LONG                      rc;         /*  Return codes. */

    rc = GreUpdateCursor(hdc, pVioPS, pInstance,

           lFunction);