Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options
 
PerlMonks  

Re^3: [Tkx] Buffering/Updating issue for text element

by zentara (Archbishop)
on Aug 28, 2010 at 11:46 UTC ( #857837=note: print w/ replies, xml ) Need Help??


in reply to Re^2: [Tkx] Buffering/Updating issue for text element
in thread [Tkx] Buffering/Updating issue for text element

Not to be picky about it, but don't even use sleep to demonstrate a slowdown..... in a GUI it completely gives you bad behavior.

Here is one way to make a non-blocking delay without sleep

#!/usr/bin/perl use warnings; use strict; use Tk; $|=1; my $count = 0; my $loop = 0; my $mw = new MainWindow(); $mw->Label( -textvariable => \$count )->pack; $mw->Button( -text => 'Start', -command => \&long_job ) ->pack( -side => 'left' ); $mw->Button( -text => 'Stop', -command => sub { $loop = 0; print "$cou +nt\n"; } ) ->pack( -side => 'left' ); MainLoop(); sub long_job { my $var; my $timer = $mw->repeat(1000, sub{$var++} ); $loop =1; while($loop){ $loop++; $mw->waitVariable(\$var); $count++; } DoOneEvent(); }

I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku ................... flash japh


Comment on Re^3: [Tkx] Buffering/Updating issue for text element
Download Code
Replies are listed 'Best First'.
Re^4: [Tkx] Buffering/Updating issue for text element
by Anonymous Monk on Aug 28, 2010 at 11:52 UTC
    Isn't that a pirate site?

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://857837]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others taking refuge in the Monastery: (7)
As of 2015-07-29 10:18 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (263 votes), past polls