## Pen for OS/2 Device Driver Reference

[prev][next][parent][TOC]

### Query Trace Table - Function 63h

Category 90h, Driver IOCtls - Query Trace Table

Select an item:

    Description
    Parameter Packet Format
    Data Packet Format
    Remarks

    #define PEN_FUNC_QTT 0x063

This function returns the valid entries in the trace table. Each entry is a DWORD (4 bytes) and can be considered an array of ULONGs. The first entry has the number of valid entries to follow.