## Pen for OS/2 Device Driver Reference

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### penclsQueryButtonData

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This method specifies the default button bit maps and names used by PenButtonDevice instances.

    M_PenButtonDevice     *self;           /*  The pointer to the class object. */

    PPENEVENTDATA          pPenEventData;

    ULONG                  ulSize;

    ulSize = _penclsQueryButtonData(self, pPenEventData);