Webmaster Forum / Perl / Tk / December 2006

  Here is my small script.
use warnings;
use strict;
use Tk;

I am sure the answer is obvious but I'm having a time at this.
Basically I want to take the data in two entry widgets, multiply them
together and put the result in a third widget using a callback.
I am making a data entry form with the following entry widgets and

I want to learn pack properly. If I don't know how to pack then I use grid
but sometime using pack and grid together is not a good idea ;-)
Please explain me somebody how to organize 5 labels to look as this using
pack only:

Please find my small script.
use Tk;
$main=MainWindow->new;
$main->Button(-text => "Click",-command => \&disp)->pack(-side =>'left');

I've several problems with the module TK-Graph.
1.
I'm using the option -printvalue => "$%.3f" to show the values of bars.
The module brings the warning "Argument "" isn't numeric in sprintf" and

My question is not Tk specific but I can't to think up any solution.
I have lot of short scripts stored on disk. In my Tk application I want to
run some of them with parameters.
I can't to use 'use' or 'require' because these scripts are modified outside

I have already wrote a program that is use to create a waypoint file
now I want to make a GUI for it. What I want (the flow of the program)
is a box at the top that asks you how many waypoints you want. when a
number is entered (that is greater than zero) that amount of LabEntry's

 I am using progress bar in my application.
 But I am getting a problem.
 So, I need your help.
Here is my code. Please run the program to see the problem.

 I am using perl/tk to create a tree.
 I am using following code for this.
 $Errtxt_tab = $err_frame->NoteBook();
  my $treeShow = $Errtxt_tab->add( "Page2", -label => 'Msg Tree',

My question is not related directly to Tk, but here are moe experts ;-)
I have a string in html format and I need to write regexp for remove all
except tables. In other word if something look like /<table.+?<\/table>/
then I want it and anything other I need not.

Hi all,,,,,
       HOw can i create multiple listboxes in Dyna tab
frame...................
here i am giving sample example for dyna tabframe......in this example

I am trying to link to an external file from a dialog box. Could anyone
give me some direction on how to accomplish this?

I use a button which does some calculations and a text widget which
displays these calculations.Unfortunately whenever i push the button
continues from the previous state and messes up my formulas. How can i
reset the content of a text widget ?.

Trying to run a perl program results in dozens of lines that say:
Use of uninitialized value in ord at
/usr/local/lib/perl5/site_perl/5.8.0/x86_64-linux/Tk/Canvas.pm line
1145.

Not sure what's going on here.  I've used code almost identical to this
before and I haven't seen this before.
Got a simple piece of code that I want to select a directory.  The
DirTree comes up just fine, I can navigate it, but anytime I select a