@zentara,

First of all, thanks for pointing that out - you are absolutely right (no shocker there), removing that sleep fixes the double-Tab issue. Why am I using it? B/c that is what the code I borrowed had. Why did the original code have it? I believe to give it that flashing red background effect...something I can (and will) live without.

However, the issue is still there if a textvariable is pre-defined with a bad string (as I noted in the update to my OP). This is more important than the other issue, b/c this will definitely crop up. The textvariable may or may not be pre-defined before displaying the widget, but if it is, and it is invalid, I would like validation to work.

Any idea what is going on there?

Edit: seems to work if I first create the widgets, then go back and configure them: 

for(1..6){
  $entries{$_}{'entry'} = $fr->Entry();
  $entries{$_}{'entry'}->configure(
    -textvariable    => \$entries{$_}{'addy'},
    -width           => 3,
#    -validate        => 'focusout',
#    -validatecommand => [ \&validate,$_,\%entries ],
#    -invalidcommand  => [ \&show_invalid,$entries{$_}{'entry'},$_ ],
  );
  $entries{$_}{'entry'}->pack(-side => 'left');

}

for(1..6){
$entries{$_}{'addy'} = 'zz'.$_ if($_ == 3);
  $entries{$_}{'entry'}->configure(
    -validate        => 'focusout',
    -validatecommand => [ \&validate,$_,\%entries ],
    -invalidcommand  => [ \&show_invalid,$entries{$_}{'entry'},$_ ],
  );
}

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In reply to Re^2: Tk::Entry and double-Tab key weirdness by atreyu
in thread Tk::Entry and double-Tab key weirdness by atreyu

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