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1 perry 1 wish
2 !!!wish
3 NAME
4 SYNOPSIS
5 OPTIONS
6 DESCRIPTION
7 OPTIONS
8 APPLICATION NAME AND CLASS
9 VARIABLES
10 SCRIPT FILES
11 PROMPTS
12 KEYWORDS
13 ----
14 !!NAME
15
16
17 wish - Simple windowing shell
18 !!SYNOPSIS
19
20
21 __wish__ ?''fileName arg arg ...''?
22 !!OPTIONS
23
24
25 __-colormap__ ''new''
26
27
28 Specifies that the window should have a new private colormap
29 instead of using the default colormap for the
30 screen.
31
32
33 __-display__ ''display''
34
35
36 Display (and screen) on which to display
37 window.
38
39
40 __-geometry__ ''geometry''
41
42
43 Initial geometry to use for window. If this option is
44 specified, its value is stored in the __geometry__ global
45 variable of the application's Tcl interpreter.
46
47
48 __-name__ ''name'' Use ''name'' as the title to be
49 displayed in the window, and as the name of the interpreter
50 for __send__ commands.
51
52
53 __-sync__ Execute all X server commands synchronously, so
54 that errors are reported immediately. This will result in
55 much slower execution, but it is useful for
56 debugging.
57
58
59 __-use__ ''id'' Specifies that the main window for the
60 application is to be embedded in the window whose identifier
61 is ''id'', instead of being created as an independent
62 toplevel window. ''Id'' must be specified in the same way
63 as the value for the __-use__ option for toplevel widgets
64 (i.e. it has a form like that returned by the
65
66
67 __ winfo id__ command).
68
69
70 __-visual__ ''visual''Specifies the visual to use for thewindow. '' Visual'' may have any of theforms supported by the __Tk_!GetVisual__procedure.__--__ Pass all remainingarguments through to the script's __argv__variable without interpreting them.This provides a mechanism for passingarguments such as __-name__ to a scriptinstead of having __wish__ interpret them.________________________________________________________________________________________________________________________________________
71 !!DESCRIPTION
72
73
74 __Wish__ is a simple program consisting of the Tcl
75 command language, the Tk toolkit, and a main program that
76 reads commands from standard input or from a file. It
77 creates a main window and then processes Tcl commands. If
78 __wish__ is invoked with no arguments, or with a first
79 argument that starts with ``-'', then it reads Tcl commands
80 interactively from standard input. It will continue
81 processing commands until all windows have been deleted or
82 until end-of-file is reached on standard input. If there
83 exists a file __.wishrc__ in the home directory of the
84 user, __wish__ evaluates the file as a Tcl script just
85 before reading the first command from standard
86 input.
87
88
89 If __wish__ is invoked with an initial ''fileName''
90 argument, then ''fileName'' is treated as the name of a
91 script file. __Wish__ will evaluate the script in
92 ''fileName'' (which presumably creates a user interface),
93 then it will respond to events until all windows have been
94 deleted. Commands will not be read from standard input.
95 There is no automatic evaluation of __.wishrc__ in this
96 case, but the script file can always __source__ it if
97 desired.
98 !!OPTIONS
99
100
101 __Wish__ automatically processes all of the command-line
102 options described in the __OPTIONS__ summary above. Any
103 other command-line arguments besides these are passed
104 through to the application using the __argc__ and
105 __argv__ variables described later.
106 !!APPLICATION NAME AND CLASS
107
108
109 The name of the application, which is used for purposes such
110 as __send__ commands, is taken from the __-name__
111 option, if it is specified; otherwise it is taken from
112 ''fileName'', if it is specified, or from the command
113 name by which __wish__ was invoked. In the last two
114 cases, if the name contains a ``/'' character, then only the
115 characters after the last slash are used as the application
116 name.
117
118
119 The class of the application, which is used for purposes
120 such as specifying options with a __RESOURCE_MANAGER__
121 property or .Xdefaults file, is the same as its name except
122 that the first letter is capitalized.
123 !!VARIABLES
124
125
126 __Wish__ sets the following Tcl variables:
127
128
129 __argc__ Contains a count of the number of ''arg''
130 arguments (0 if none), not including the options described
131 above.
132
133
134 __argv__ Contains a Tcl list whose elements are the
135 ''arg'' arguments that follow a __--__ option or don't
136 match any of the options described in OPTIONS above, in
137 order, or an empty string if there are no such
138 arguments.
139
140
141 __argv0__ Contains ''fileName'' if it was specified.
142 Otherwise, contains the name by which __wish__ was
143 invoked.
144
145
146 __geometry__
147
148
149 If the __-geometry__ option is specified, __wish__
150 copies its value into this variable. If the variable still
151 exists after ''fileName'' has been evaluated, __wish__
152 uses the value of the variable in a __wm geometry__
153 command to set the main window's geometry.
154
155
156 __tcl_interactive__
157
158
159 Contains 1 if __wish__ is reading commands interactively
160 (''fileName'' was not specified and standard input is a
161 terminal-like device), 0 otherwise.
162 !!SCRIPT FILES
163
164
165 If you create a Tcl script in a file whose first line
166 is
167
168
169 __#!/usr/local/bin/wish
170 __
171
172
173 then you can invoke the script file directly from your shell
174 if you mark it as executable. This assumes that __wish__
175 has been installed in the default location in
176 /usr/local/bin; if it's installed somewhere else then you'll
177 have to modify the above line to match. Many UNIX systems do
178 not allow the __#!__ line to exceed about 30 characters
179 in length, so be sure that the __wish__ executable can be
180 accessed with a short file name.
181
182
183 An even better approach is to start your script files with
184 the following three lines:
185
186
187 __#!/bin/sh
188 # the next line restarts using wish \
189 exec wish
190 __
191
192
193 This approach has three advantages over the approach in the
194 previous paragraph. First, the location of the __wish__
195 binary doesn't have to be hard-wired into the script: it can
196 be anywhere in your shell search path. Second, it gets
197 around the 30-character file name limit in the previous
198 approach. Third, this approach will work even if __wish__
199 is itself a shell script (this is done on some systems in
200 order to handle multiple architectures or operating systems:
201 the __wish__ script selects one of several binaries to
202 run). The three lines cause both __sh__ and __wish__
203 to process the script, but the __exec__ is only executed
204 by __sh__. __sh__ processes the script first; it
205 treats the second line as a comment and executes the third
206 line. The __exec__ statement cause the shell to stop
207 processing and instead to start up __wish__ to reprocess
208 the entire script. When __wish__ starts up, it treats all
209 three lines as comments, since the backslash at the end of
210 the second line causes the third line to be treated as part
211 of the comment on the second line.
212 !!PROMPTS
213
214
215 When __wish__ is invoked interactively it normally
216 prompts for each command with ``__%__ ''. You can change
217 the prompt by setting the variables __tcl_prompt1__ and
218 __tcl_prompt2__. If variable __tcl_prompt1__ exists
219 then it must consist of a Tcl script to output a prompt;
220 instead of outputting a prompt __wish__ will evaluate the
221 script in __tcl_prompt1__. The variable
222 __tcl_prompt2__ is used in a similar way when a newline
223 is typed but the current command isn't yet complete; if
224 __tcl_prompt2__ isn't set then no prompt is output for
225 incomplete commands.
226 !!KEYWORDS
227
228
229 shell, toolkit
230 ----
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