Setting the yview position in scrolled

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

Hello wise monks, I have the following frame

             $frame = $lower_frame->Scrolled('Frame',   -scrollbars =>
+ "e", -height => '300')->pack(-fill => "x",-anchor=>'w');
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Later on I feel it with checkbuttons and in certain scenario I want to set the yscroll position back to 0. I tried

$frame->yviewMoveto(0);
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and

$frame->yview(moveto => 0);
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as suggested in

http://search.cpan.org/~ni-s/Tk/Tk/Pane.pm

Please help, Thanks

Comment on Setting the yview position in scrolled Select or Download Code

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Re: Setting the yview position in scrolled by kcott (Archbishop) on Jul 18, 2013 at 07:35 UTC
You've almost answered your question yourself. Tk::Frame is non-interactive. The first sentence of Tk::Pane - DESCRIPTION: "Tk::Pane* provides a scrollable frame widget."* Change `... Scrolled('Frame', ...` [download] to `... Scrolled('Pane', ...` [download] and you'll probably have more luck. :-) -- Ken	[reply] [d/l] [select]
Re^2: Setting the yview position in scrolled by Anonymous Monk on Jul 18, 2013 at 08:08 UTC
Sorry - no go, I also tried with Pane and I get: Tk::Error: Can't call method "Call" on an undefined value at /usr/local/perl5.8.6/lib/site_perl/5.8.6/i686-linux/Tk/Pane.pm line 346, <DATA> line 6.	[reply]
Re^3: Setting the yview position in scrolled by Anonymous Monk on Jul 18, 2013 at 08:30 UTC
#!/usr/bin/perl -- use strict; use warnings; use Tk; my $mw = tkinit; my $target = 45; my $tmax = 60; my $bb = $mw->Button( -text => 'JT' )->pack;; my $tt = $mw->Entry( -textvariable => \$target )->pack; my $br = $mw->Button( -text => 'RJ' )->pack;; my $fr = $mw->Scrolled('Frame')->pack; $fr->Button( -text => $_ )->pack for 0 .. $tmax; $bb->configure( -command => [ \&dothat, $fr, \$target, $tmax ] ); $br->configure( -command => [ \&dothat, $fr, \$target, $tmax , 'random +'] ); MainLoop; sub dothat { my( $fr, $tgr, $tm , $random ) = @_; $random and $$tgr = int rand $tm; my $tg = $$tgr / $tm; $fr->yview( moveto => $tg ); return; } __END__ [download]	[reply] [d/l]
Re^4: Setting the yview position in scrolled by Anonymous Monk on Jul 18, 2013 at 10:38 UTC
Re^5: Setting the yview position in scrolled by Anonymous Monk on Jul 18, 2013 at 11:01 UTC
Re^3: Setting the yview position in scrolled by Anonymous Monk on Jul 18, 2013 at 08:28 UTC
show your code	[reply]
Re: Setting the yview position in scrolled by Anonymous Monk on Jul 18, 2013 at 07:11 UTC
If you can post runnable code, I'll take a look at it, thanks	[reply]