This ought to be pretty simple (or at least I thought so). I'm looking at the example in _Perl in a Nutshell_, page 575. It says:
#!/usr/bin/perl -w use Tk; my $mw = MainWindow->new; $mw->Button (-text => "Hello World!", -command => sub {exit})->pack; MainLoop;
And this is fine. The problem is that I seek not to exit the program (the command says 'exit'), but rather to return from 'MainLoop' so I can do something else. It is possible that I could have several instances of code like this, and I'd rather not keep going thru memory with wierd returns from code (shades of 'goto'). If I make the command executed by the button just 'return', I'll just return and await the next event (another button press!). Does Perl/Tk have something that will cause 'MainLoop' to return to its caller. The documentation is a bit vague on this point! Thanks.

In reply to Perl Tk-How to return from 'MainLoop' by herby1620

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.