These examples are included to hopefully clear up any confusion about
using Scrollbars in the real world. Each example uses the
Scrolled method if possible, then does the same
thing manually. We haven’t covered all the widget types we are
using here, but we aren’t doing anything fancy with them
either. If you see an option or method you don’t recognize,
just see the appropriate chapter for that widget to learn more.
The Entry widget can only be scrolled
horizontally. The Entry can contain only one line of text at most, so
a vertical Scrollbar would do nothing. Using
Scrolled to create a scrolled Entry widget is
$mw->Scrolled("Entry", -scrollbars => "s", -width => 30)->pack( );
If you want to make the Scrollbar
appear only when the data in the Entry widget requires it, use
-scrollbars => "os". Using the
Scrollbar method is a bit more work:
$scrollbar = $mw->Scrollbar(-orient => 'horizontal'); $entry = $mw->Entry(-width => 30, -xscrollcommand => ['set' , $scrollbar]); $scrollbar->configure(-command => ['xview', $entry]); $scrollbar->pack(-side => 'bottom', -fill => 'x'); $entry->pack(-side => 'bottom', -fill => 'x');
Both will create an Entry that looks similar to the one in Figure 6-14.
Figure 6-14. Entry widget with a Scrollbar
A Listbox widget can be scrolled both horizontally and vertically, although you might not always ...