IB2017 has asked for the wisdom of the Perl Monks concerning the following question:

Dear monks,

I am trying to read the contents of dynamically generated Entry wigets plus their "index", 1, 2 or 3, (I do not know a better term for it) based from the cursor position->the widget that has focus. My script works fine for reading the content of the Tk Entry widget that has focus (I implemented a pop-up menu), but I have no idea how can I get the "index" (1, 2 or 3) of the Tk Entry that contained that value. I would use it to perform tasks depending on the widget from which the value comes from (for examples 1 is prices, 2 names, and so on).

#!/usr/bin/perl

use strict;
use warnings;
use Tk;

my %EntryInput;
my @Entry;


my $mw = new MainWindow -title => 'Simple';

foreach (1..3) {
    $mw->Label(-text => $_)->pack(-side => 'left');
    $Entry[$_] = $mw->Entry(-textvariable => \$EntryInput{$_})->pack(-
+side => 'left');
    PupupEnterField($mw, $Entry[$_]);
}


MainLoop;

sub PupupEnterField{
  my ($mw, $obj) = @_;
  my $menu = $mw->Menu(-tearoff=>0, -menuitems=>[
    [command=>"Read value", -command=>[sub {my $EntryValue=$obj->get; 
+ReadEntryValue($EntryValue)}, $obj,]],
  ]);
  $obj->menu($menu);
  $obj->bind('<3>', ['PostPopupMenu', Ev('X'), Ev('Y'), ]);
  return $obj;
}

sub ReadEntryValue{
    my $EntryValue=shift;
    print $EntryValue;
    #print the index of the Entry widget: 1, 2 or 3...
}

[download]

Any suggestion?

Replies are listed 'Best First'.
Re: Tk Entry dynamic read value and index
by tybalt89 (Monsignor) on Oct 06, 2017 at 17:20 UTC

    Like this? (Or maybe I don't understand what you want.) 

    #!/usr/bin/perl -l

# http://perlmonks.org/?node_id=1200841

use strict;
use warnings;
use Tk;

my %EntryInput;
my @Entry;


my $mw = new MainWindow -title => 'Simple';

foreach (1..3) {
  $mw->Label(-text => $_)->pack(-side => 'left');
  $Entry[$_] = $mw->Entry(-textvariable => \$EntryInput{$_})->pack(-si
+de => 'left');
  PupupEnterField($mw, $Entry[$_], $_);
}


MainLoop;

sub PupupEnterField{
  my ($mw, $obj, $index) = @_;
  my $menu = $mw->Menu(-tearoff=>0, -menuitems=>[
    [command=>"Read value", -command=>[sub {my $EntryValue=$obj->get; 
+ReadEntryValue($EntryValue, $index)}, $obj,]],
  ]);
  $obj->menu($menu);
  $obj->bind('<3>', ['PostPopupMenu', Ev('X'), Ev('Y'), ]);
  return $obj;
}

sub ReadEntryValue{
  my ($EntryValue, $index) = @_;
  print $EntryValue;
  #print the index of the Entry widget: 1, 2 or 3...
  print $index;
}

    [download]
[reply]
[d/l]

      ... I have to laugh! Of course it works, and this is what I was in need for! I was trying to solve the problem just from the wrong angle. Sometimes things are much much easier then what we think. Thank you.

[reply]

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