All kinds of fun things happen when I dynamically rebuild my GUI in Tk. Here's an example: I have an array of recent commands (as per the Hash of Arrays example I shared the other day).

I display a button panel that has a button for each entry in the array which results from sorting that hash. Various factors cause the number of buttons to change.
...
for (my $i = 0; $i <= $#$rrecent; $i++)
{
  $$rbut[$i] = $bpanelframe->Button( -text => $$rrecent[$i],
                     -fg => $clrfgbut,                                
+             -activeforeground => $clrfgbut,
                     -command => [\&fire, $$rrecent[$i], $_[0]] )
        ->pack( -side => 'top',
            -anchor => 'n',
            -fill => 'x',
            -expand => 1   );} 
}
...
    $bpanelframe->pack( -side => 'top',
            -anchor => 'n',
            -fill => 'both',
            -expand => 1   );

[download]
My problem is that $bpanelframe does not resize to accomodate the number of buttons inside it. Before calling this code the previous panel's $bpanelframe was ->packForget-ed. I either get blank space between the buttons or some buttons are neatly hidden underneath the frame packed below it.

The behaviour is inconsistent; sometimes it does resize, and other times it doesn't. Do I need to packForget all the way out to my outermost frames, or is there something else I'm missing? I've checked numerous tutorials on the Web and reconfiguring on the fly is not something that's discussed. It almost works right; that's the maddening part! :D

In reply to dynamic resizing in Tk by samizdat

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