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Combo box linked with another combo box

by Selvakumar (Scribe)
on Feb 19, 2013 at 15:22 UTC ( #1019588=perlquestion: print w/ replies, xml ) Need Help??
Selvakumar has asked for the wisdom of the Perl Monks concerning the following question:

Hi All,

I have a combo box having one set of details and i need to show related list to another combobox. I need to show from the list when i select "colors" i need to show colors details in the another combobox and the same should change if i select "fruits". Please suggest.

use strict; use warnings; use Tk; use Tk::BrowseEntry; my $var; my $mw = tkinit; my $widget = $mw->BrowseEntry( -label => 'Select the Journal Name:', -variable => \$var, -state => 'normal', -choices => [qw(Color Fruits)], #-width => 45 )->pack( -side => 'top', -pady => '10', -anchor => 'w'); my $widget1 = $mw->BrowseEntry( -label => 'Select the Journal Name:', -variable => \$var, -state => 'normal', -choices => [qw(White Red)], #-width => 45 )->pack( -side => 'top', -pady => '10', -anchor => 'w'); MainLoop();

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Re: Combo box linked with another combo box
by Anonymous Monk on Feb 19, 2013 at 15:33 UTC

    Please suggest.

    well, use a callback, update choices in callback

Re: Combo box linked with another combo box
by zentara (Archbishop) on Feb 19, 2013 at 17:12 UTC
    Here is a way using the browsecommand method of the BrowseEntry and using a hash to store the values.
    #!/usr/bin/perl use strict; use warnings; use Tk; use Tk::BrowseEntry; my $var; my $var1; my @fruits = qw( apple orange bananna grape); my @colors = qw( red orange green purple); my $widget1; # declare here so you can modify it # from first $widget my %options; $options{'Fruits'} = \@fruits; $options{'Colors'} = \@colors; #print "@{$options{'Fruits'}}\n"; my $mw = tkinit; my $widget = $mw->BrowseEntry( -label => 'Select the Journal Name:', -variable => \$var, -state => 'normal', -choices => [qw(Colors Fruits)], -browsecmd=>sub{ #print "@_\n"; my $selected = $_[1]; print "$selected\n"; $widget1->configure( -choices => $options{$var}, ); $mw->update; } )->pack( -side => 'top', -pady => '10', -anchor => 'w'); $widget1 = $mw->BrowseEntry( -label => 'Select:', -variable => \$var1, -state => 'normal', -choices => $options{$var}, #-width => 45 )->pack( -side => 'top', -pady => '10', -anchor => 'w'); MainLoop();

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