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71 lines
2.3 KiB
Plaintext
71 lines
2.3 KiB
Plaintext
15 years ago
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#
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# itk::Widget
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# ----------------------------------------------------------------------
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# Base class for ordinary widgets in the [incr Tk] Toolkit. Creates
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# a frame to contain the widget. Derived classes add widgets and
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# methods to specialize behavior.
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#
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# METHODS:
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#
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# WIDGET ATTRIBUTES:
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# switch: -background .... normal background color for widget
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# name: background
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# class: Background
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#
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# switch: -cursor ........ cursor used when pointer is inside
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# name: cursur widget
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# class: Cursur
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#
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# ----------------------------------------------------------------------
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# AUTHOR: Michael J. McLennan
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# Bell Labs Innovations for Lucent Technologies
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# mmclennan@lucent.com
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# http://www.tcltk.com/itcl
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#
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# RCS: $Id: Widget.itk,v 1.1 1998/07/27 18:45:28 stanton Exp $
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# ----------------------------------------------------------------------
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# Copyright (c) 1993-1998 Lucent Technologies, Inc.
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# ======================================================================
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# See the file "license.terms" for information on usage and
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# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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itcl::class itk::Widget {
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inherit itk::Archetype
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# ------------------------------------------------------------------
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# CONSTRUCTOR
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# ------------------------------------------------------------------
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constructor {args} {
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#
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# Create a window with the same name as this object
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#
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set itk_hull [namespace tail $this]
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set itk_interior $itk_hull
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itk_component add hull {
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frame $itk_hull -class [namespace tail [info class]]
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} {
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keep -background -cursor
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}
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bind itk-delete-$itk_hull <Destroy> "itcl::delete object $this"
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set tags [bindtags $itk_hull]
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bindtags $itk_hull [linsert $tags 0 itk-delete-$itk_hull]
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eval itk_initialize $args
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}
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destructor {
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if {[winfo exists $itk_hull]} {
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set tags [bindtags $itk_hull]
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set i [lsearch $tags itk-delete-$itk_hull]
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if {$i >= 0} {
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bindtags $itk_hull [lreplace $tags $i $i]
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}
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destroy $itk_hull
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}
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}
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private variable itk_hull ""
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}
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