Well, I couldn't figure out how to update the node after a few minutes, so I'll reply (It's been a while since I've been here).

Thanks for all the solutions (especially the general recommendations--it's been a while since I've been using Perl, and just getting back to it I find that I've forgot some things).

I, however, have another question

It's just to get me pointed in the right direction. I was thinking it might be desirable that one group of radio buttons were displayed at one time (with buttons saying first, previous, next). Would all that would be required to do this be to undraw the current screen (via the forget method?) and then re-draw with the desired buttons (and, of course, handle in the command subs which buttons need to be drawn)? I want to make sure that I'm not missing any subtelties somewhere.

Update: I changed the code around a little bit (minor things), and came across one final question. In order to make a 'finalized' product, so to speak, it would be nice if I knew how to make a Tk window that would open to a specified size. I looked through Mastering Perl/Tk, and got the notion that the geometry method might have something to do with it, but the book never explicitly said anything about how to (that I saw). What I'm thinking, for this example, is to have the code run, and come up simply as a rectangle that displays all the information (buttons) in one window. What would be the general method for this?

(A side thought: since there's usually a preview button around when one is submitting a node for the first time, would such a button be desirable when editing a node?)

Update 2
Well, its not necessary for an answer I guess, but here's the code I forgot to put up before (hmm. . . about that preview button. . .)

#!/usr/bin/perl -w
use strict;
use Tk;
use Tk::Pane;


## In case this seems mysterious, the example is eventually
## going to administer a survey in which the participant
## responds with a 1-4 about certain adjectives
my @words = ("word") x 30;

my $mw = MainWindow->new( -title => "SACL Survey" );
my $pane = $mw->Scrolled(qw/Pane -scrollbars osow/)->pack(
  -expand => 'yes',
  -fill   => 'both',
);
my $frame = $pane->Frame->pack();

$mw->Label( -text => "... <insert directions here> ..." )->pack();

my @button_values;
my @frame_widgets;

my $unanswered = 30;

sub button_set {
  my $i = int(shift);
  my $prev  = $i - 1;
  my $next  = $i + 1;
  my $first =  1;
  my $last  = 30;
  $prev = $first if $prev < $first;

  $_->destroy foreach reverse @frame_widgets;
  @frame_widgets = ();

  push @frame_widgets, $frame->Label(
    -text => "#$i.  $words[$i-1]",
  )->pack();

  push @frame_widgets, $frame->Button(
    -text    => "First",
    -command => sub { set_unasnwered(); button_set($first) },
  )->pack(
    -side=>'left',
  );

  push @frame_widgets, $frame->Button(
    -text    => "Back to $prev",
    -command => sub { set_unasnwered(); button_set($prev) },
  )->pack(
    -side=>'left',
  );

  foreach my $j (1..4) {
    push @frame_widgets, $frame->Radiobutton(
      -text     => $j,
      -value    => $j,
      -variable => \$button_values[$i-1],
    )->pack(
      -side   => 'left',
    );
  }

  my $state1 = ("normal","disabled")[$next > $last];
  push @frame_widgets, $frame->Button(
    -text    => "Forward to $next",
    -command => sub { set_unasnwered(); button_set($next) },
    -state   => $state1,
  )->pack(
    -side => 'left',
  );

  my $state2 = ("disabled","normal")[$unanswered < 1];
  push @frame_widgets, $frame->Button(
    -text    => "Finished",
    -command => sub { $mw->destroy; calc() },
    -state   => $state2,
  )->pack(
    -side => 'left',
  );
}

sub set_unasnwered {
  my $i = 29;
  foreach my $j (@button_values) { $i-- if $j }
  $unanswered = $i;
}

sub calc {
  # Make sure all questions are answered due to few, but unlikely, 
 #ways of getting past the preliminary check
  my $i = 30;
  foreach my $j (@button_values) { $i-- if $j }
  if ($i > 0) { print "Survey not completed.  Exiting. . ."; exit }

  # Calculate score and save to file (Survey is indeed completed)
}

button_set(1);

MainLoop;

use Data::Dumper;
print Dumper \@button_values;

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In reply to A node misplaced. . . by dimmesdale
in thread Some beginning Tk help by dimmesdale

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