TIOStdReq

type TIOStdReq = packed record

  io_Message: TMessage;

Message structure

  io_Device: PDevice;

Pointer to device to use

  io_Unit: PUnit;

Pointer to unit, depend on the device

  io_Command: Word;

Command to sent to device

  io_Flags: Byte;

Flags for device, depend on device.

  io_Error: ShortInt;

Error of device, depend on device

  io_Actual: DWord;

Number of bytes sent to device

  io_Length: DWord;

Number of bytes transfered.

  io_Data: Pointer;

Pointer to data buffer

  io_Offset: DWord;

Offset for block structured devices

end;