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-rw-r--r--ext/tk/lib/tkextlib/bwidget/listbox.rb5
1 files changed, 5 insertions, 0 deletions
diff --git a/ext/tk/lib/tkextlib/bwidget/listbox.rb b/ext/tk/lib/tkextlib/bwidget/listbox.rb
index 3d26081e6c..1267500661 100644
--- a/ext/tk/lib/tkextlib/bwidget/listbox.rb
+++ b/ext/tk/lib/tkextlib/bwidget/listbox.rb
@@ -35,6 +35,11 @@ class Tk::BWidget::ListBox
end
end
+ def __boolval_optkeys
+ super() << 'autofocus' << 'dragenabled' << 'dropenabled' << 'selectfill'
+ end
+ private :__boolval_optkeys
+
def tagid(tag)
if tag.kind_of?(Tk::BWidget::ListBox::Item)
tag.id