NAME PRD_PRTCOMMAND -- send a command to the printer FUNCTION This function sends a command to either the parallel or serial device. The printer device maps this command to the control code set of the current printer. The commands supported can be found with the printer.device/Write command. All printers may not support all functions. IO REQUEST ioprtcmdreq io_Message mn_ReplyPort set io_Device preset by opendevice io_Unit preset by opendevice io_Command PRD_PRTCOMMAND io_PrtCommand the actual command number io_Parm0 parameter for the command io_Parm1 parameter for the command io_Parm2 parameter for the command io_Parm3 parameter for the command RESULTS Errors: if the PRD_PRTCOMMAND succeeded, then io_Error will be zero. Otherwise io_Error will be non-zero. An error of -1 indicates that the command is not supported by the current printer driver. This could be used to check if the connected printer supports a particular command (italics for example). SEE ALSO printer.device/Write printer.h, parallel.device, preferences