I am trying to update a Tk widget with *each* element of an array by having a subroutine called from a foreach loop. The problem is that the widget is only updated with the last element of the array - *after* the foreach loop has finished. In fact the widget isn't even created until the foreach loop has finished. Rather I am looking to have it created at the first evaluation of the foreach loop, and updated at each subsequent element. ------ 
use Tk;
$mw = new MainWindow;
$rec1 = $mw->Canvas(-height => "90", 
            -width  => "450")->pack();
@junk = (0,1,2,3,4,5,6,7,8,9);

foreach $n (@junk) {
    delay_type($n);
}

MainLoop;

sub delay_type {
    $mw->after(500);
    $rec1->createRectangle(1,1,450,90, 
                               -fill => "black");
    $rec1->createText(225,45, 
              -text    => "$n",
              -justify => "center",
              -fill    => "yellow",
              -font    => "times 62");
    print $n;
}

[download]
------ It print $n in <STDOUT> the way I would have it update the widget (except that the widget would erase the previous element). This is a really simplified example of a piece of code that I am working on, and therefore I would prefer to keep the foreach loop, but if anyone has suggestions, I would really appreciate it.

In reply to Updating a Tk Widget from a foreach loop by Anonymous Monk

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