Manual Pages for UNIX Operating System command usage for man console

Tk Built-In Commands                                  console(1T)



_________________________________________________________________

NAME
     console - Control the console on systems without a real con-
     sole

SYNOPSIS
     console subcommand ?arg ...?
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DESCRIPTION
     The console window is a replacement for a  real  console  to
     allow input and output on the standard I/O channels on plat-
     forms that do not have a real console.  It is implemented as
     a  separate interpreter with the Tk toolkit loaded, and con-
     trol over this interpreter is given through the console com-
     mand.  The behaviour of the console window is defined mainly
     through the contents of  the  console.tcl  file  in  the  Tk
     library (or the Console resource on Macintosh systems.)

     console eval script
          Evaluate the script argument as a  Tcl  script  in  the
          console   interpreter.    The   normal  interpreter  is
          accessed through the consoleinterp command in the  con-
          sole interpreter.

     console hide
          Hide  the  console   window   from   view.    Precisely
          equivalent  to  withdrawing the . window in the console
          interpreter.

     console show
          Display the console window.   Precisely  equivalent  to
          deiconifying the

     console title ?string?
          Query or modify the title of the  console  window.   If
          string  is not specified, queries the title of the con-
          sole window, and sets the title of the  console  window
          to string otherwise.  Precisely equivalent to using the
          wm title command in the console interpreter.

ACCESS TO THE MAIN INTERPRETER
     The consoleinterp command in the console interpreter  allows
     scripts  to  be  evaluated in the main interpreter.  It sup-
     ports two subcommands: eval and record.

     consoleinterp eval script
          Evaluates script as a Tcl script at the global level in
          the main interpreter.




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Tk Built-In Commands                                  console(1T)



     consoleinterp record script
          Records and evaluates script as a  Tcl  script  at  the
          global  level  in the main interpreter as if script had
          been typed in at the console.

ADDITIONAL TRAP CALLS
     There are several additional commands in the console  inter-
     preter  that  are called in response to activity in the main
     interpreter.  These are  documented  here  for  completeness
     only;  they  form part of the internal implementation of the
     console and are likely to  change  or  be  modified  without
     warning.

     Output to the console from  the  main  interpreter  via  the
     stdout  and  stderr  channels  is  handled  by  invoking the
     tk::ConsoleOutput command in the  console  interpreter  with
     two  arguments.  The first argument is the name of the chan-
     nel being written to, and the second argument is the  string
     being written to the channel (after encoding and end-of-line
     translation processing has been performed.)

     When the . window of the main interpreter is destroyed,  the
     tk::ConsoleExit command in the console interpreter is called
     (assuming the  console  interpreter  has  not  already  been
     deleted itself, that is.)

DEFAULT BINDINGS
     The default script creates  a  console  window  (implemented
     using a text widget) that has the following behaviour:

     [1]  Pressing the  tab  key  inserts  a  TAB  character  (as
          defined by the Tcl \t escape.)

     [2]  Pressing the return key causes  the  current  line  (if
          complete by the rules of info complete) to be passed to
          the main interpreter for evaluation.

     [3]  Pressing the delete key deletes the selected  text  (if
          any  text is selected) or the character to the right of
          the cursor (if not at the end of the line.)

     [4]  Pressing the backspace key deletes  the  selected  text
          (if  any text is selected) or the character to the left
          of the cursor (of not at the start of the line.)

     [5]  Pressing either Control+A or the home  key  causes  the
          cursor  to  go  to the start of the line (but after the
          prompt, if a prompt is present on the line.)

     [6]  Pressing either Control+E or the  end  key  causes  the
          cursor to go to the end of the line.




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Tk Built-In Commands                                  console(1T)



     [7]  Pressing either Control+P or the up key causes the pre-
          vious entry in the command history to be selected.

     [8]  Pressing either Control+N or the down  key  causes  the
          next entry in the command history to be selected.

     [9]  Pressing either Control+B or the left  key  causes  the
          cursor  to  move  one character backward as long as the
          cursor is not at the prompt.

     [10] Pressing either Control+F or the right key  causes  the
          cursor to move one character forward.

     [11] Pressing F9 rebuilds the console window  by  destroying
          all  its  children  and  reloading  the Tcl script that
          defined the console's behaviour.

     Most other behaviour is the  same  as  a  conventional  text
     widget  except for the way that the <> event is handled
     identically to the <> event.

EXAMPLE
     Not all platforms have the  console  command,  so  debugging
     code  often  has the following code fragment in it so output
     produced by puts can be seen while during development:
          catch {console show}


KEYWORDS
     console, interpreter, window, interactive, output channels


SEE ALSO
     destroy(1T),   fconfigure(1T),   history(1T),    interp(1T),
     puts(1T), text(1T), wm(1T)

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     _______________________________________
    |   ATTRIBUTE TYPE   |  ATTRIBUTE VALUE|
    |____________________|__________________|_
    | Availability       |  runtime/tk-8   |
    |____________________|__________________|_
    | Interface Stability|  Uncommitted    |
    |____________________|_________________|

NOTES
     Source for Tk is available on http://opensolaris.org.





Tk                      Last change: 8.4                        3