wish(1) 							  Tk Applications							   wish(1)

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NAME

       wish - Simple windowing shell

SYNOPSIS

       wish ?-encoding name? ?fileName arg arg ...?

OPTIONS

       -encoding name	   Specifies the encoding of the text stored in fileName.  This option is only recognized prior to the fileName argument.  |

       -colormap new	   Specifies that the window should have a new private colormap instead of using the default colormap for the screen.

       -display display    Display (and screen) on which to display window.

       -geometry geometry  Initial  geometry  to use for window.  If this option is specified, its value is stored in the geometry global variable
			   of the application's Tcl interpreter.

       -name name	   Use name as the title to be displayed in the window, and as the name of the interpreter for send commands.

       -sync		   Execute all X server commands synchronously, so that errors are reported immediately.  This will result in much  slower
			   execution, but it is useful for debugging.

       -use id		   Specifies  that  the main window for the application is to be embedded in the window whose identifier is id, instead of
			   being created as an independent toplevel window.  Id must be specified in the same way as the value for the -use option
			   for toplevel widgets (i.e.  it has a form like that returned by the winfo id command).
			   Note  that  on  some  platforms this will only work correctly if id refers to a Tk frame or toplevel that has its -con-
			   tainer option enabled.

       -visual visual	   Specifies the visual to use for the window.	Visual may have any of the forms supported by the Tk_GetVisual procedure.

       --		   Pass all remaining arguments through to the script's argv variable without interpreting them.  This provides  a  mecha-
			   nism for passing arguments such as -name to a script instead of having wish interpret them.
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DESCRIPTION

       Wish is a simple program consisting of the Tcl command language, the Tk toolkit, and a main program that reads commands from standard input
       or from a file.	It creates a main window and then processes Tcl commands.  If wish is invoked with arguments, then  the  first	few  argu-
       ments,  ?-encoding name? ?fileName? specify the name of a script file, and, optionally, the encoding of the text data stored in that script
       file.  A value for fileName is recognized if the appropriate argument does not start with "-".

       If there are no arguments, or the arguments do not specify a fileName, then wish reads Tcl commands interactively from standard input.	It
       will continue processing commands until all windows have been deleted or until end-of-file is reached on standard input.  If there exists a
       file ".wishrc" in the home directory of the user, wish evaluates the file as a Tcl script just before reading the first command from  stan-
       dard input.

       If  arguments to wish do specify a fileName, then fileName is treated as the name of a script file.  Wish will evaluate the script in file-
       Name (which presumably creates a user interface), then it will respond to events until all windows have been deleted.  Commands will not be
       read  from  standard  input.  There is no automatic evaluation of ".wishrc" when the name of a script file is presented on the wish command
       line, but the script file can always source it if desired.

       Note that on Windows, the wishversion.exe program varies from the tclshversion.exe program in an additional important way: it does not con-
       nect  to  a standard Windows console and is instead a windowed program. Because of this, it additionally provides access to its own console
       command.

OPTION PROCESSING

       Wish automatically processes all of the command-line options described in the OPTIONS summary  above.   Any  other  command-line  arguments
       besides these are passed through to the application using the argc and argv variables described later.

APPLICATION NAME AND CLASS

       The  name of the application, which is used for purposes such as send commands, is taken from the -name option, if it is specified;  other-
       wise it is taken from fileName, if it is specified, or from the command name by which wish was invoked.	In the last two cases, if the name
       contains a "/" character, then only the characters after the last slash are used as the application name.

       The class of the application, which is used for purposes such as specifying options with a RESOURCE_MANAGER property or .Xdefaults file, is
       the same as its name except that the first letter is capitalized.

VARIABLES

       Wish sets the following Tcl variables:

       argc	      Contains a count of the number of arg arguments (0 if none), not including the options described above.

       argv	      Contains a Tcl list whose elements are the arg arguments that follow a --  option  or  do  not  match  any  of  the  options
		      described in OPTIONS above, in order, or an empty string if there are no such arguments.

       argv0	      Contains fileName if it was specified.  Otherwise, contains the name by which wish was invoked.

       geometry       If the -geometry option is specified, wish copies its value into this variable.  If the variable still exists after fileName
		      has been evaluated, wish uses the value of the variable in a wm geometry command to set the main window's geometry.

       tcl_interactive
		      Contains 1 if wish is reading commands interactively (fileName was not specified	and  standard  input  is  a  terminal-like
		      device), 0 otherwise.

SCRIPT FILES

       If you create a Tcl script in a file whose first line is
	      #!/usr/local/bin/wish
       then  you  can  invoke the script file directly from your shell if you mark it as executable.  This assumes that wish has been installed in
       the default location in /usr/local/bin;	if it is installed somewhere else then you will have to modify the above line to match.  Many UNIX
       systems	do not allow the #! line to exceed about 30 characters in length, so be sure that the wish executable can be accessed with a short
       file name.

       An even better approach is to start your script files with the following three lines:
	      #!/bin/sh
	      # the next line restarts using wish 
	      exec wish "$0" ${1+"$@"}
       This approach has three advantages over the approach in the previous paragraph.	First, the location of the wish binary does not have to be
       hard-wired  into the script:  it can be anywhere in your shell search path.  Second, it gets around the 30-character file name limit in the
       previous approach.  Third, this approach will work even if wish is itself a shell script (this is done on some systems in order	to  handle
       multiple  architectures	or operating systems:  the wish script selects one of several binaries to run).  The three lines cause both sh and
       wish to process the script, but the exec is only executed by sh.  sh processes the script first;  it treats the second line  as	a  comment
       and  executes  the  third line.	The exec statement cause the shell to stop processing and instead to start up wish to reprocess the entire
       script.	When wish starts up, it treats all three lines as comments, since the backslash at the end of the second  line	causes	the  third
       line to be treated as part of the comment on the second line.

       The  end  of  a	script file may be marked either by the physical end of the medium, or by the character, "32" ("u001a", control-Z).	If
       this character is present in the file, the wish application will read text up to but not including  the	character.   An  application  that
       requires  this  character in the file may encode it as "32", "x1a", or "u001a"; or may generate it by use of commands such as format or
       binary.

PROMPTS

       When wish is invoked interactively it normally prompts for each command with "% ".  You can change the  prompt  by  setting  the  variables
       tcl_prompt1  and  tcl_prompt2.	If  variable  tcl_prompt1 exists then it must consist of a Tcl script to output a prompt;  instead of out-
       putting a prompt wish will evaluate the script in tcl_prompt1.  The variable tcl_prompt2 is used in a similar way when a newline  is  typed
       but the current command is not yet complete; if tcl_prompt2 is not set then no prompt is output for incomplete commands.

KEYWORDS

       shell, toolkit

Tk									8.0								   wish(1)