in reply to Re^2: Dynamically add Optionmenus based on variable perl tk
in thread Dynamically add Optionmenus based on variable perl tk

I've written up this example:

#!/usr/bin/perl
use strict;
use warnings;
use Tk;

my $mw = MainWindow->new;
$mw->geometry("300x300");

my $var =1;
my ($major, $other);

my @options = ('one', 'two', 'three', 'four', 'five');

my $topics1=$mw->Radiobutton(-text =>'Selection 1', -value => '0',
        -variable => \$major,  -command => sub {&do_smth('1')})->pack(
+);

my $topics2=$mw->Radiobutton(-text =>'Selection 2', -value => '1',
        -variable => \$major, -command => sub {&do_smth('2')})->pack()
+;

my $topics3=$mw->Radiobutton(-text =>'Selection 3', -value => '3',
        -variable => \$major, -command => sub {&do_smth('3')})->pack()
+;

if ($var eq 'more'){

        my $options=$mw->Optionmenu( -options => [@options], -variable
+ => \$other,
                -command => [sub {&do_more($major, $other);}])->pack()
+;

}

MainLoop;


sub do_smth{
        my $selection = shift;
        $var='more' unless ($selection == 2);
}

sub do_more{
        my ($major, $other) = @_;
        print "do this: $other while Selection was $major\n";

}

[download]

How do I make the extra Optionmenu to appear when choice 2 is called?

Replies are listed 'Best First'.
Re^4: Dynamically add Optionmenus based on variable perl tk
by Anonymous Monk on Dec 07, 2011 at 23:03 UTC
    In the latest release of Tk you can use $options->options() to reset the list whenever you like. Here is my version of your test case 
    #!/usr/bin/perl
use strict;
use warnings;
use Tk;

my $mw = MainWindow->new;
$mw->geometry("300x300");

my $var =1;
my ($major, $other);

my @options = ('one', 'two', 'three', 'four', 'five');

my $topics1=$mw->Radiobutton(-text =>'Selection 1', -value => '0',
        -variable => \$major,  -command => sub {&do_smth('1')})->pack(
+);

my $topics2=$mw->Radiobutton(-text =>'Selection 2', -value => '1',
        -variable => \$major, -command => sub {&do_smth('2')})->pack()
+;

my $topics3=$mw->Radiobutton(-text =>'Selection 3', -value => '3',
        -variable => \$major, -command => sub {&do_smth('3')})->pack()
+;


my $options=$mw->Optionmenu( -options => [@options], -variable => \$ot
+her,
                -command => [sub {&do_more($major, $other);}])->pack()
+;


MainLoop;


sub do_smth{
    my $selection = shift;
    if ($selection == 2) {
        $options->options ([@options, 'six' , 'seven']) 
    } else {
        $options->options ([@options] )
    }
    $var='more' unless ($selection == 2);
}

sub do_more{
        my ($major, $other) = @_;
        print "do this: $other while Selection was $major\n";

}

    [download]
[reply]
[d/l]

In Section Seekers of Perl Wisdom