02-15-2008
...you can append an ampersand ( & ) at the end of the comands you want run in the background
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LEARN ABOUT MOJAVE
itkwidget
Widget(n) [incr Tk] Widget(n)
__________________________________________________________________________________________________________________________________________________
NAME
Widget - base class for mega-widgets within a frame
INHERITANCE
itk::Archetype <- itk::Widget
STANDARD OPTIONS
background cursor
See the "options" manual entry for details on the standard options.
_________________________________________________________________
DESCRIPTION
The Widget class inherits everything from the Archetype class, and adds a Tk frame called the "hull" component to represent the body of the
mega-widget. The window class name for the hull is set to the most-specific class name for the mega-widget. The protected variable
itk_interior contains the window path name for the "hull" component. Derived classes specialize this widget by packing other widget compo-
nents into the hull.
Since the hull for the Widget class is implemented with a Tk frame, mega-widgets in the Widget class can be packed into other frames and
toplevels.
COMPONENTS
Name: hull
Class: Frame
The "hull" component acts as the body for the entire mega-widget. Other components are packed into the hull to further specialize
the widget.
EXAMPLE
The following example implements a simple TextDisplay mega-widget. It creates a read-only display of text with a text widget and a scroll-
bar.
option add *TextDisplay.wrap none widgetDefault
option add *TextDisplay.textBackground ivory widgetDefault
option add *TextDisplay.width 40 widgetDefault
option add *TextDisplay.height 10 widgetDefault
itcl::class TextDisplay {
inherit itk::Widget
constructor {args} {
itk_component add text {
text $itk_interior.info -state disabled -yscrollcommand [code $itk_interior.sbar set]
} {
usual
keep -tabs -wrap -width -height
rename -background -textbackground textBackground Background
}
pack $itk_component(text) -side left -expand yes -fill both
itk_component add scrollbar {
scrollbar $itk_interior.sbar -command [code $itk_interior.info yview]
}
pack $itk_component(scrollbar) -side right -fill y
eval itk_initialize $args
}
public method display {info}
public method append {info}
}
itcl::body TextDisplay::display {info} {
$itk_component(text) configure -state normal
$itk_component(text) delete 1.0 end
$itk_component(text) insert 1.0 $info
$itk_component(text) configure -state disabled
}
itcl::body TextDisplay::append {info} {
$itk_component(text) configure -state normal
$itk_component(text) insert end $info
$itk_component(text) configure -state disabled
}
itk::usual TextDisplay {
keep -background -cursor -foreground -font
keep -activebackground -activerelief
keep -highlightcolor -highlightthickness
keep -insertbackground -insertborderwidth -insertwidth
keep -insertontime -insertofftime
keep -selectbackground -selectborderwidth -selectforeground
keep -textbackground -troughcolor
}
#
# EXAMPLE: Display the /etc/passwd file
#
TextDisplay .file -background red
pack .file
.file display [exec cat /etc/passwd]
KEYWORDS
itk, Archetype, Widget, mega-widget
itk 3.0 Widget(n)