Dear Monks,

I am learning Perl and GUI development, and working currently on code that will work on multiple toolkits (Tk, Wx, Gtk etc). I need help with Tk. For my purposes I have to place all my widgets (rather than pack->() them). I wish to create a fixed sized, fixed position scrolling Listbox, to be later populated by other items. This works perfectly well if I insert strings, I appear not to be able to insert other widgets (e.g Checkbuttons). 

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

my $mw = MainWindow->new;
$mw->geometry('400x250');
my $canvas = $mw->Canvas(
         -bg => 'lavender',
         -relief => 'sunken',
         -width => 400,
         -height => 250)->pack(-expand => 1, -fill => 'both');
my $size=[200,200];    #  size of the widget 
my $location=[50,12];  #  position of widget

my @strings2 = qw/apples bananas pears grapes/ x 5; 
$canvas->{"listbox"}=$mw->Scrolled("Listbox",
    -bg => 'white',
    -scrollbars => "e",
    -selectmode => 'extended',
    -width  => (${$size}[0])/7,      # some scaling 
    -height => (${$size}[1]+12)/15); # scaling

$canvas->{"listbox"}->insert('end',@strings2); # This works

$canvas->createWindow(${$location}[0] ,${$location}[1],
                      -anchor => "nw",
                      -window => $canvas->{"listbox"});

MainLoop();

[download]
Have searched many places, and most suggest I should use pack->(), but I guess mixing pack and place does not work, and I am committed to use pack for my use-case. Your guidance will be gratefully received,

saif

In reply to TK Placing Widgets in a Scrolling Pane by saiftynet

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