## Pen for OS/2 Device Driver Reference

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### Query Unit Specific Data - Function 60h

Category 90h, Driver IOCtls - Query Unit Specific Data

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    Description
    Parameter Packet Format
    Data Packet Format
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    #define PEN_FUNC_QUSD 0x060

This function reads the device-specific data for the requested unit. The device-specific data area is truncated when the pqusd.byteCount is less than the length of the device-specific data. The first ULONG in the unit- specific data is the entire length of the area. This is not reduced to reflect a truncated query.