Label
Section: User Contributed Perl Documentation (3)
Updated: 2021-01-27
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NAME
Tk::Label - Create and manipulate Label widgets
SYNOPSIS
$label
=
$parent
->
Label(?
options?);
STANDARD OPTIONS
-activebackground
-activeforeground
-anchor
-background
-bitmap
-borderwidth
-compound
-cursor
-disabledforeground
-font
-foreground
-highlightbackground
-highlightcolor
-highlightthickness
-image
-justify
-padx
-pady
-relief
-takefocus
-text
-textvariable
-underline
-wraplength
See Tk::options for details of the standard options.
WIDGET-SPECIFIC OPTIONS
- Name: height
-
- Class: Height
-
- Switch: -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 Tk_GetPixels);
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.
- Name: state
-
- Class: State
-
- Switch: -state
-
Specifies one of three states for the label: normal, active, or
disabled. In normal state the label is displayed using the
foreground and background options. In active state the label is
displayed using the activeForeground and activeBackground
options. In the disabled state the disabledForeground and
background options determine how the button is displayed.
- Name: width
-
- Class: Width
-
- Switch: -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 Tk_GetPixels);
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.
DESCRIPTION
The
Label method creates a new window (given by the
$widget 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
label command returns its
$widget argument. At the time this command is invoked,
there must not exist a window named
$widget, but
$widget's parent must exist.
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 wrapLength option) and
one of the characters may optionally be underlined using the
underline option.
The label can be manipulated in a few simple ways, such as
changing its relief or text, using the commands described below.
WIDGET METHODS
The
Label method creates a widget object.
This object supports the
configure and
cget methods
described in Tk::options which can be used to enquire and
modify the options described above.
The widget also inherits all the methods provided by the generic
Tk::Widget class.
BINDINGS
When a new label is created, it has no default event bindings:
labels are not intended to be interactive.
KEYWORDS
label, widget