'\" '\" Copyright (c) 2001 Donal K. Fellows '\" '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" '\" RCS: @(#) $Id: console.n,v 1.1.1.1 2007/07/10 15:05:16 duncan Exp $ '\" '\" The definitions below are for supplemental macros used in Tcl/Tk '\" manual entries. '\" '\" .AP type name in/out ?indent? '\" Start paragraph describing an argument to a library procedure. '\" type is type of argument (int, etc.), in/out is either "in", "out", '\" or "in/out" to describe whether procedure reads or modifies arg, '\" and indent is equivalent to second arg of .IP (shouldn't ever be '\" needed; use .AS below instead) '\" '\" .AS ?type? ?name? '\" Give maximum sizes of arguments for setting tab stops. Type and '\" name are examples of largest possible arguments that will be passed '\" to .AP later. If args are omitted, default tab stops are used. '\" '\" .BS '\" Start box enclosure. From here until next .BE, everything will be '\" enclosed in one large box. '\" '\" .BE '\" End of box enclosure. '\" '\" .CS '\" Begin code excerpt. '\" '\" .CE '\" End code excerpt. '\" '\" .VS ?version? ?br? '\" Begin vertical sidebar, for use in marking newly-changed parts '\" of man pages. The first argument is ignored and used for recording '\" the version when the .VS was added, so that the sidebars can be '\" found and removed when they reach a certain age. If another argument '\" is present, then a line break is forced before starting the sidebar. '\" '\" .VE '\" End of vertical sidebar. '\" '\" .DS '\" Begin an indented unfilled display. '\" '\" .DE '\" End of indented unfilled display. '\" '\" .SO '\" Start of list of standard options for a Tk widget. The '\" options follow on successive lines, in four columns separated '\" by tabs. '\" '\" .SE '\" End of list of standard options for a Tk widget. '\" '\" .OP cmdName dbName dbClass '\" Start of description of a specific option. cmdName gives the '\" option's name as specified in the class command, dbName gives '\" the option's name in the option database, and dbClass gives '\" the option's class in the option database. '\" '\" .UL arg1 arg2 '\" Print arg1 underlined, then print arg2 normally. '\" '\" RCS: @(#) $Id: man.macros,v 1.1.1.1 2007/07/10 15:05:16 duncan Exp $ '\" '\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages. .if t .wh -1.3i ^B .nr ^l \n(.l .ad b '\" # Start an argument description .de AP .ie !"\\$4"" .TP \\$4 .el \{\ . ie !"\\$2"" .TP \\n()Cu . el .TP 15 .\} .ta \\n()Au \\n()Bu .ie !"\\$3"" \{\ \&\\$1 \\fI\\$2\\fP (\\$3) .\".b .\} .el \{\ .br .ie !"\\$2"" \{\ \&\\$1 \\fI\\$2\\fP .\} .el \{\ \&\\fI\\$1\\fP .\} .\} .. '\" # define tabbing values for .AP .de AS .nr )A 10n .if !"\\$1"" .nr )A \\w'\\$1'u+3n .nr )B \\n()Au+15n .\" .if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n .nr )C \\n()Bu+\\w'(in/out)'u+2n .. .AS Tcl_Interp Tcl_CreateInterp in/out '\" # BS - start boxed text '\" # ^y = starting y location '\" # ^b = 1 .de BS .br .mk ^y .nr ^b 1u .if n .nf .if n .ti 0 .if n \l'\\n(.lu\(ul' .if n .fi .. '\" # BE - end boxed text (draw box now) .de BE .nf .ti 0 .mk ^t .ie n \l'\\n(^lu\(ul' .el \{\ .\" Draw four-sided box normally, but don't draw top of .\" box if the box started on an earlier page. .ie !\\n(^b-1 \{\ \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' .\} .el \}\ \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' .\} .\} .fi .br .nr ^b 0 .. '\" # VS - start vertical sidebar '\" # ^Y = starting y location '\" # ^v = 1 (for troff; for nroff this doesn't matter) .de VS .if !"\\$2"" .br .mk ^Y .ie n 'mc \s12\(br\s0 .el .nr ^v 1u .. '\" # VE - end of vertical sidebar .de VE .ie n 'mc .el \{\ .ev 2 .nf .ti 0 .mk ^t \h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n' .sp -1 .fi .ev .\} .nr ^v 0 .. '\" # Special macro to handle page bottom: finish off current '\" # box/sidebar if in box/sidebar mode, then invoked standard '\" # page bottom macro. .de ^B .ev 2 'ti 0 'nf .mk ^t .if \\n(^b \{\ .\" Draw three-sided box if this is the box's first page, .\" draw two sides but no top otherwise. .ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c .\} .if \\n(^v \{\ .nr ^x \\n(^tu+1v-\\n(^Yu \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c .\} .bp 'fi .ev .if \\n(^b \{\ .mk ^y .nr ^b 2 .\} .if \\n(^v \{\ .mk ^Y .\} .. '\" # DS - begin display .de DS .RS .nf .sp .. '\" # DE - end display .de DE .fi .RE .sp .. '\" # SO - start of list of standard options .de SO .SH "STANDARD OPTIONS" .LP .nf .ta 5.5c 11c .ft B .. '\" # SE - end of list of standard options .de SE .fi .ft R .LP See the \\fBoptions\\fR manual entry for details on the standard options. .. '\" # OP - start of full description for a single option .de OP .LP .nf .ta 4c Command-Line Name: \\fB\\$1\\fR Database Name: \\fB\\$2\\fR Database Class: \\fB\\$3\\fR .fi .IP .. '\" # CS - begin code excerpt .de CS .RS .nf .ta .25i .5i .75i 1i .. '\" # CE - end code excerpt .de CE .fi .RE .. .de UL \\$1\l'|0\(ul'\\$2 .. .TH console n 8.4 Tk "Tk Built-In Commands" .BS '\" Note: do not modify the .SH NAME line immediately below! .SH NAME console \- Control the console on systems without a real console .SH SYNOPSIS \fBconsole\fR \fIsubcommand\fR ?\fIarg ...\fR? .BE .SH DESCRIPTION .PP The console window is a replacement for a real console to allow input and output on the standard I/O channels on platforms that do not have a real console. It is implemented as a separate interpreter with the Tk toolkit loaded, and control over this interpreter is given through the \fBconsole\fR command. The behaviour of the console window is defined mainly through the contents of the \fIconsole.tcl\fR file in the Tk library (or the \fIConsole\fR resource on Macintosh systems.) .PP .TP \fBconsole eval \fIscript\fR Evaluate the \fIscript\fR argument as a Tcl script in the console interpreter. The normal interpreter is accessed through the \fBconsoleinterp\fR command in the console interpreter. .TP \fBconsole hide\fR Hide the console window from view. Precisely equivalent to withdrawing the \fB.\fR window in the console interpreter. .TP \fBconsole show\fR Display the console window. Precisely equivalent to deiconifying the \fB.\fR window in the console interpreter. .TP \fBconsole title \fR?\fIstring\fR? Query or modify the title of the console window. If \fIstring\fR is not specified, queries the title of the console window, and sets the title of the console window to \fIstring\fR otherwise. Precisely equivalent to using the \fBwm title\fR command in the console interpreter. .SH "ACCESS TO THE MAIN INTERPRETER" .PP The \fBconsoleinterp\fR command in the console interpreter allows scripts to be evaluated in the main interpreter. It supports two subcommands: \fBeval\fR and \fBrecord\fR. .PP .TP \fBconsoleinterp eval \fIscript\fR Evaluates \fIscript\fR as a Tcl script at the global level in the main interpreter. .TP \fBconsoleinterp record \fIscript\fR Records and evaluates \fIscript\fR as a Tcl script at the global level in the main interpreter as if \fIscript\fR had been typed in at the console. .SH "ADDITIONAL TRAP CALLS" .PP There are several additional commands in the console interpreter that are called in response to activity in the main interpreter. \fIThese 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.\fR .PP Output to the console from the main interpreter via the stdout and stderr channels is handled by invoking the \fBtk::ConsoleOutput\fR command in the console interpreter with two arguments. The first argument is the name of the channel 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.) .PP When the \fB.\fR window of the main interpreter is destroyed, the \fBtk::ConsoleExit\fR command in the console interpreter is called (assuming the console interpreter has not already been deleted itself, that is.) .SH "DEFAULT BINDINGS" .PP The default script creates a console window (implemented using a text widget) that has the following behaviour: .IP [1] Pressing the tab key inserts a TAB character (as defined by the Tcl \et escape.) .IP [2] Pressing the return key causes the current line (if complete by the rules of \fBinfo complete\fR) to be passed to the main interpreter for evaluation. .IP [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.) .IP [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.) .IP [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.) .IP [6] Pressing either Control+E or the end key causes the cursor to go to the end of the line. .IP [7] Pressing either Control+P or the up key causes the previous entry in the command history to be selected. .IP [8] Pressing either Control+N or the down key causes the next entry in the command history to be selected. .IP [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. .IP [10] Pressing either Control+F or the right key causes the cursor to move one character forward. .IP [11] Pressing F9 rebuilds the console window by destroying all its children and reloading the Tcl script that defined the console's behaviour. .PP Most other behaviour is the same as a conventional text widget except for the way that the \fI<>\fR event is handled identically to the \fI<>\fR event. .SH EXAMPLE Not all platforms have the \fBconsole\fR command, so debugging code often has the following code fragment in it so output produced by \fBputs\fR can be seen while during development: .CS catch {\fBconsole show\fR} .CE .SH KEYWORDS console, interpreter, window, interactive, output channels .SH "SEE ALSO" destroy(n), fconfigure(n), history(n), interp(n), puts(n), text(n), wm(n)