in reply to Tk: Does the 'grid' geometry manager has a problem with a scrolled parent?

Hi tcarmeli,

Try this: 

my ($col, $row) = $graph_pane->{'SubWidget'}->{'scrolled'}->gridSize( 
+);

[download]

I think that will give you the answer you're looking for (4 x 3).

You may also want to consider using strict and warnings in your code, which only requires adding 6 my declarations: 

#!/usr/bin/perl -w

use strict;
use warnings;

use Tk;
use Tk::Pane;

my $mw = MainWindow->new;
my $graph_pane = $mw->Scrolled('Frame',
        -scrollbars => 'osoe',
        )->pack(
        -fill => 'both',
        -expand => 1,
        );
for my $i (0 .. 2){
        for my $j (0 .. 3){
                my $c=$graph_pane->Canvas(
                        -width    => 250,
                        -height   => 100,
                        -background => 'white',
                        )->grid(
                        -row => $i,
                        -sticky => "nsew",
                        -column => $j,
                        );
                $c->createText(10,10,
                        -text => $i . ',' . $j,
                        -font   => "{Arial} 8 bold",
                        );
        }
}

my ($col, $row) = $graph_pane->{'SubWidget'}->{'scrolled'}->gridSize( 
+);
warn($col);
warn($row);

MainLoop;

[download]
s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/

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Re^2: Tk: Does the 'grid' geometry manager has a problem with a scrolled parent?
by tcarmeli (Beadle) on Aug 07, 2006 at 15:14 UTC
    Thanks!
    It works!
    Regarding the missing 'my', I just wrote a short example, it is not my 'real' code...Thanks!
[reply]
Re^2: Tk: Does the 'grid' geometry manager has a problem with a scrolled parent?
by tanyeun (Sexton) on Aug 08, 2006 at 05:49 UTC
    what does the following means:
    my ($col, $row) =$graph_pane->{'SubWidget'}->{'scrolled'}->gridSize();

    [download]
    I had the error message:
    Can't call method "gridSize" on an undefined value at tes7 line 23.
[reply]
[d/l]
      Hi tanyeun,

      It's difficult to know what's causing the error without seeing a bit more information.

      Are you sure you've created graph_pane correctly?

      Try putting this near the beginning of your code: 

      use Data::Dumper;
$Data::Dumper::Indent = 1;

      [download]

      and just before the line where the error occurs (Can't call method "gridSize" on an undefined value at tes7 line 23) put this: 

      printf "graph_pane => %s\n", Dumper(\$graph_pane);

      [download]

      Assuming that graph_pane was assigned correctly, it should display the entire underlying data structure.  For example, I get: 

      graph_pane => $VAR1 = \bless( {
    'SubWidget' => {
      'scrolled' => bless( {
        '_After_' => {
          'after#3' => bless( [
            ${$VAR1}->{'SubWidget'}->{'scrolled'},
            'after#3',
            'idle',
            'once',
            bless( [
              'Manage',
              ${$VAR1}->{'SubWidget'}->{'scrolled'},
              bless( {
                # 
                # ...Many lines omitted...
                #
  }, 'Tk::Frame' );

      [download]

      Did you get something like the above, or something completely different?

      s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/
[reply]
[d/l]
[select]
        well, I got this: 
        graph_pane => $VAR1 = \bless( {
    '_Destroy_' => [
      bless( [
        sub { "DUMMY" }
      ], 'Tk::Callback' )
    ],
    'SubWidget' => {
      'frame' => bless( {
        'Configure' => {
          '-background' => '#C6C6B2B2A8A8',
          '-foreground' => '#000000000000',
          '-labelVariable' => undef
        },
        '_#canvas' => 11,
        '_TkValue_' => '.frame.frame',
        'ConfigSpecs' => {
          '-fg' => '-foreground',
          '-background' => [
            [
              'SELF'
            ],
            'background',
            'Background',
            '#C6C6B2B2A8A8'
          ],
          '-label' => [
            'METHOD',
            undef,
            undef,
            undef
          ],
          '-bg' => '-background',
          '-foreground' => [
            [
              'PASSIVE'
            ],
            'foreground',
            'Foreground',
            '#000000000000'
          ],
          'DEFAULT' => [
            'SELF'
          ],
          '-labelPack' => [
            'METHOD',
            undef,
            undef,
            undef
          ],
          '-labelVariable' => [
            'METHOD',
            undef,
            undef,
            undef
          ]
        }
      }, 'Tk::Frame' )
    },
    '_#frame' => 0,
    'Configure' => {
      '-background' => '#C6C6B2B2A8A8',
      '-foreground' => '#000000000000',
      '-scrollbars' => 'osoe',
      '-labelVariable' => undef
    },
    'Delegates' => {
      'DEFAULT' => ${$VAR1}->{'SubWidget'}->{'frame'},
      'bindtags' => ${$VAR1}->{'SubWidget'}->{'frame'},
      'bind' => ${$VAR1}->{'SubWidget'}->{'frame'}
    },
    '_After_' => {
      'after#1' => bless( [
        ${$VAR1},
        'after#1',
        'idle',
        'once',
        bless( [
          ${$VAR1},
          'packscrollbars'
        ], 'Tk::Callback' )
      ], 'Tk::After' )
    },
    '_TkValue_' => '.frame',
    '-scrollbars' => 'osoe',
    'ConfigSpecs' => {
      '-fg' => '-foreground',
      '-background' => [
        ${$VAR1}->{'SubWidget'}->{'frame'},
        'background',
        'Background'
      ],
      '-label' => [
        'METHOD',
        undef,
        undef,
        undef
      ],
      '-bg' => '-background',
      '-foreground' => [
        ${$VAR1}->{'SubWidget'}->{'frame'},
        'foreground',
        'Foreground'
      ],
      'DEFAULT' => [
        ${$VAR1}->{'SubWidget'}->{'frame'}
      ],
      '-labelPack' => [
        'METHOD',
        undef,
        undef,
        undef
      ],
      '-scrollbars' => [
        'METHOD',
        'scrollbars',
        'Scrollbars',
        'se'
      ],
      '-labelVariable' => [
        'METHOD',
        undef,
        undef,
        undef
      ]
    },
    'pack_pending' => 1
  }, 'Tk::Frame' );

        [download]
        I completely doesn't know what it says...|||
[reply]
[d/l]

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