Hello,

Using the following code, if I open the dropdown and close it by clicking either the down-arrow or the entry box to the left of the down arrow, everything is fine.

But if I select an item, or click elsewhere to close the dropdown, the 'after' timer keeps going and I get the error below when I close the app.

I'm not using Tkx::MainLoop() because this is a conversion from a console app to a GUI app that does stuff in the background.

My question is: What is the timer doing, and how do I stop it and/or avoid getting the error? I could call Tkx::after_cancel(Tkx::after_info()); right before Tkx::update, but that would cancel all timers.

Thanks.

Perl code: 
#!/usr/bin/perl -w

use strict;
use Tkx;

my $mw = Tkx::widget->new('.');

my $combo = $mw->new_ttk__combobox(-values=>['item1', 'item2', 'item3'
+]);
$combo->g_pack();

while (eval{Tkx::winfo_exists('.')}) {
    Tkx::update();
    
    my $after = Tkx::after_info();
    if ($after) {
        my $info = Tkx::after_info($after);
        print ">>> $after // $info\n"; # to see the timer go
    }
}

[download]
Error: 
can't invoke "winfo" command:  application has been destroyed
    while executing
"winfo exists $w"
    (procedure "ttk::entry::AutoScroll" line 3)
    invoked from within
"ttk::entry::AutoScroll .c"
    (in namespace inscope "::" script line 1)
    invoked from within
"::namespace inscope :: {ttk::entry::AutoScroll .c}"
    ("uplevel" body line 1)
    invoked from within
"uplevel #0 $Repeat(script)"
    (procedure "ttk::Repeat" line 3)
    invoked from within
"ttk::Repeat"
    ("after" script)

[download]
Perl version (stock latest ActivePerl 5.10.0 build 1004, but same since at least 5.10.0/1002): 
C:\>perl --version

This is perl, v5.10.0 built for MSWin32-x86-multi-thread
(with 5 registered patches, see perl -V for more detail)

Copyright 1987-2007, Larry Wall

Binary build 1004 [287188] provided by ActiveState http://www.ActiveSt
+ate.com
Built Sep  3 2008 13:16:37

Perl may be copied only under the terms of either the Artistic License
+ or the
GNU General Public License, which may be found in the Perl 5 source ki
+t.

Complete documentation for Perl, including FAQ lists, should be found 
+on
this system using "man perl" or "perldoc perl".  If you have access to
+ the
Internet, point your browser at http://www.perl.org/, the Perl Home Pa
+ge.

[download]

In reply to Tkx combobox error on quit by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.