Information about printer device characteristics, returned by the BIDI_Q_DEVICE command.

typedef struct _PRTDEVCHAR {
  USHORT     majorRev;              /*  Major revision level of software protocol. */
  USHORT     minorRev;              /*  Minor revision level of software protocol. */
  USHORT     cLogicalConnections;   /*  Number of logical connections with which the printer is capable of communicating. */
  USHORT     cPhysicalConnections;  /*  Number of physical ports in the printer. */
  USHORT     cActiveConnections;    /*  Number of different connections active with this printer. */
  USHORT     usReserved;            /*  Must be 0 (zero). */
  USHORT     extensionRev;          /*  Revision extension-level of software protocol. */
  USHORT     maxJobsComplete;       /*  Maximum number of jobs about which the printer can retain information. */
  BYTE       markingTech;           /*  Marking technology used by the printer. */
  BYTE       colorCaps;             /*  Color capabilities of the printer. */
  USHORT     colorlevels;           /*  Number of color or monochrome levels supported. */
  BYTE       duplexCaps;            /*  Duplex capabilities of the printer. */
  BYTE       lengthUnits;           /*  Units used by the printer when reporting lengths. */
  USHORT     horizUnits;            /*  Logical units per lengthUnit in the horizontal direction. */
  USHORT     vertUnits;             /*  Logical units per lengthUnit in the vertical direction. */
  USHORT     speed;                 /*  Maximum speed of the printer. */
  BYTE       speedUnits;            /*  Units indicating speed capabilities of the printer. */
  BYTE       counterUnits;          /*  Units of measurement used in printer statistics. */
  BYTE       interpreters;          /*  Count of interpreters in the printer. */
  BYTE       inputs;                /*  Count of printing media inputs currently in the printer. */
  BYTE       outputs;               /*  Count of output destinations for printing media. */
  BYTE       options;               /*  Count of options installed in the printer. */
  BYTE       msgLanguage;           /*  Language used in text messages sent from printer. */
  BYTE       ubReserved;            /*  Reserved; must be 0 (zero). */
  ULONG      maxReceivePacketSize;  /*  Maximum size, in bytes, of a data packet that can be received by the printer. */
  USHORT     maxOutstandingCmds;    /*  Number of commands that the printer can receive and be working on at one time. */
  ULONG      memory;                /*  Total RAM installed in printer in K bytes. */
  ULONG      ulpszPrinterName;      /*  Model and manufacturer of printer. */
  ULONG      ulpszRevision;         /*  Revision level of the printer. */
  ULONG      ulpszSerialNo;         /*  Serial number of the printer. */
} PRTDEVCHAR;

typedef   PRTDEVCHAR   * PPRTDEVCHAR ;