Estimated Tk monks
In the example below, I would like to keep the bindings provides by the Scrolled widget - when user clicks or or drags the scrollbar elements - but I'd like to be called so that I can add some behavior. Specifically, when user scrolls down to the last planet, I'd like to add to the list some exoplanets, for example. When called, I would also need to know/find out what is the current scroll position. Is there a general pattern for doing this in Tk? Pointers to doc, tutorials or working examples would be welcome.
#perl -w
use strict;
use Tk;
my @planets = qw / Mercury Venus Earth Mars Jupiter Saturn Uranus Nept
+un Pluto /;
my $mw = MainWindow->new();
my $plist = $mw->Scrolled(
"Listbox",
-scrollbars => 'oe',
-selectmode => 'single',
-height => 4,
-setgrid => 1
);
foreach my $planet (@planets) {
$plist->insert( 'end', $planet );
}
$plist->pack();
MainLoop();
TIA
Rudif
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|