CONTROL


Format:    Control

Template:

Purpose:   To intercept graphic prints to the printer.device.

Specification:
    Control allows the user to intercept graphic print calls to
    the printer.device, and modify the actual variables sent to
    the printer.device.  Control allows modification of all
    sizes and flags which control the details of the graphic print.

    Control may be used from either CLI or from Workbench.  While in
    operation, Control waits for any call to do graphic printing;
    it then brings up a requester which allows the user to modify
    the parameters.  Control executes until either it receives
    a control-C (either by the BREAK command or if not RUN
    by typing control-C in the CLI window) or by executing Control again.

    CMap, Mode, SrcX, SrcY, SrcW, SrcH, DCol and DRow are the parameters
    to the DumpRPort command of the printer device.  The two digit codes
    in rectangular boxes are the flag bits for the io_Special parameter of
    the DumpRPort command.  A brief description follows:

    Code    Meaning
    ----    -------
      NP    NOPRINT         compute and return print size, don't print
      TM    TRUSTME         don't reset on gfx prints
      NF    NOFORMFEED      don't eject paper on gfx prints
      D4    DENSITY4 bit    select density 4 bit (obsolete)
      D2    DENSITY2 bit    select density 2 bit (obsolete)
      D1    DENSITY1 bit    select density 1 bit (obsolete)
      AS    ASPECT          ensure correct aspect ratio
      CE    CENTER          center image on paper
      FR    FRACROWS        DestRows is fraction of FULLROWS
      FC    FRACCOLS        DestCols is fraction of FULLCOLS
      FR    FULLROWS        make DestRows maximum possible
      FC    FULLCOLS        make DestCols maximum possible
      MR    MILROWS         DestRows specified in 1/1000"
      MC    MILCOLS         DestCols specified in 1/1000"

Examples:

    1> run control
    [CLI 1]
    1> graphicdump
    1> break 2
        
SEE ALSO:
	The Rom Kernal Manual for details of the printer.device, its use,
parameters, and flags.