## Virtual Device Driver Reference for OS/2

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### VDHQueryKeyShift

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    Format
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This function is called by the virtual mouse device driver to query the keyboard shift state of a DOS session.

    #include mvdm.h

    HVDM      VDMHandle;  /*  DOS session handle */

    USHORT    rc;

    rc = VDHQueryKeyShift(VDMHandle);