label.n
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- '"
- '" Copyright (c) 1990-1994 The Regents of the University of California.
- '" Copyright (c) 1994-1996 Sun Microsystems, Inc.
- '"
- '" See the file "license.terms" for information on usage and redistribution
- '" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- '"
- '" RCS: @(#) $Id: label.n,v 1.6.2.1 2004/10/28 10:19:29 dkf Exp $
- '"
- .so man.macros
- .TH label n 4.0 Tk "Tk Built-In Commands"
- .BS
- '" Note: do not modify the .SH NAME line immediately below!
- .SH NAME
- label - Create and manipulate label widgets
- .SH SYNOPSIS
- fBlabelfR fIpathName fR?fIoptionsfR?
- .SO
- -activebackground -disabledforeground -padx
- -activeforeground -font -pady
- -anchor -foreground -relief
- -background -highlightbackground -takefocus
- -bitmap -highlightcolor -text
- -borderwidth -highlightthickness -textvariable
- -compound -image -underline
- -cursor -justify -wraplength
- .SE
- .SH "WIDGET-SPECIFIC OPTIONS"
- .OP -height height Height
- Specifies a desired height for the label.
- If an image or bitmap is being displayed in the label then the value is in
- screen units (i.e. any of the forms acceptable to fBTk_GetPixelsfR);
- for text it is in lines of text.
- If this option isn't specified, the label's desired height is computed
- from the size of the image or bitmap or text being displayed in it.
- .OP -state state State
- Specifies one of three states for the label: fBnormalfR, fBactivefR,
- or fBdisabledfR. In normal state the button is displayed using the
- fBforegroundfR and fBbackgroundfR options. In active state
- the label is displayed using the fBactiveForegroundfR and
- fBactiveBackgroundfR options. In the disabled state the
- fBdisabledForegroundfR and fBbackgroundfR options determine how
- the button is displayed.
- .OP -width width Width
- Specifies a desired width for the label.
- If an image or bitmap is being displayed in the label then the value is in
- screen units (i.e. any of the forms acceptable to fBTk_GetPixelsfR);
- for text it is in characters.
- If this option isn't specified, the label's desired width is computed
- from the size of the image or bitmap or text being displayed in it.
- .BE
- .SH DESCRIPTION
- .PP
- The fBlabelfR command creates a new window (given by the
- fIpathNamefR argument) and makes it into a label widget.
- Additional
- options, described above, may be specified on the command line
- or in the option database
- to configure aspects of the label such as its colors, font,
- text, and initial relief. The fBlabelfR command returns its
- fIpathNamefR argument. At the time this command is invoked,
- there must not exist a window named fIpathNamefR, but
- fIpathNamefR's parent must exist.
- .PP
- A label is a widget that displays a textual string, bitmap or image.
- If text is displayed, it must all be in a single font, but it
- can occupy multiple lines on the screen (if it contains newlines
- or if wrapping occurs because of the fBwrapLengthfR option) and
- one of the characters may optionally be underlined using the
- fBunderlinefR option.
- The label can be manipulated in a few simple ways, such as
- changing its relief or text, using the commands described below.
- .SH "WIDGET COMMAND"
- .PP
- The fBlabelfR command creates a new Tcl command whose
- name is fIpathNamefR. This
- command may be used to invoke various
- operations on the widget. It has the following general form:
- .CS
- fIpathName option fR?fIarg arg ...fR?
- .CE
- fIOptionfR and the fIargfRs
- determine the exact behavior of the command. The following
- commands are possible for label widgets:
- .TP
- fIpathName fBcgetfR fIoptionfR
- Returns the current value of the configuration option given
- by fIoptionfR.
- fIOptionfR may have any of the values accepted by the fBlabelfR
- command.
- .TP
- fIpathName fBconfigurefR ?fIoptionfR? ?fIvalue option value ...fR?
- Query or modify the configuration options of the widget.
- If no fIoptionfR is specified, returns a list describing all of
- the available options for fIpathNamefR (see fBTk_ConfigureInfofR for
- information on the format of this list). If fIoptionfR is specified
- with no fIvaluefR, then the command returns a list describing the
- one named option (this list will be identical to the corresponding
- sublist of the value returned if no fIoptionfR is specified). If
- one or more fIoption-valuefR pairs are specified, then the command
- modifies the given widget option(s) to have the given value(s); in
- this case the command returns an empty string.
- fIOptionfR may have any of the values accepted by the fBlabelfR
- command.
- .SH BINDINGS
- .PP
- When a new label is created, it has no default event bindings:
- labels are not intended to be interactive.
- .SH KEYWORDS
- label, widget