Re: GtkAdjustment and GtkSpinButton question

[muppet <scott asofyet org>]

On Wednesday, August 13, 2003, at 07:56  PM, Matthew Weier OPhinney 
wrote:

> Here's what I've got going. I'm pulling data from an XML file using
> XML::DOM. To ensure that I'm getting integers to pass to
> Gtk2::SpinButton's max and min values, I'm using something like:
>
>     my $min = int($node->getAttribute('min'));
>     my $max = int($node->getAttribute('max'));
>     my $val = $option->{int_value}; # this is already an integer
>     my $step = $node->getAttribute('step');
>
>     ($step) ? $step = int($step) : $step = 1;
>
>     my $spin = Gtk2:SpinButton->new_with_range($min, $max, $step);
>     $spin->set_value($val);
>
> And that's not working. I've even setup some print statements to make
> sure that it's getting proper values (it is), but the value isn't being
> set.
>
> Oddly enough, if I set the value *later*, i.e. after it's been
> manipulated, it *will* take. Go figure.
>
> Any ideas?

i can't reproduce your problem unless the value i try to set is outside 
the range of min and max.

this test program:

-=-=-=-
use Gtk2 -init;

$win = Gtk2::Window->new;
$win->signal_connect (delete_event => sub {Gtk2->main_quit; 1});
$win->set_border_width (16);

$vbox = Gtk2::VBox->new;
$vbox->pack_start (Gtk2::Label->new ("wait, this wednesday?"), 1, 1, 0);

$spin = Gtk2::SpinButton->new_with_range (10, 50, 5);
$spin->signal_connect (value_changed => sub {print 
$_[0]->get_value."\n";});
$spin->set_value (25);
print "after set_value\n";

$vbox->pack_start ($spin, 1, 1, 0);
$win->add ($vbox);
$win->show_all;
Gtk2->main;
-=-=-=-

prints out

 25
 after set_value

so it sets the new value before the widget is shown (as expected, 
because an adjustment doesn't need to be displayed to change its value).

if i supply 5 to set_value instead of 25, the number doesn't print out, 
as though the callback doesn't run, and the value is set to 10, which 
is the minval.

you set up print statements to see that the correct values were getting 
in --- where were they?  what kinds of values were they?


> (I should probably upgrade to 0.92 to see if the error still happens
> there... I'm on 0.90 -- unless no changes have been made to this
> portion...)
according to cvsweb, neither GtkSpinButton.xs nor GtkAdjustment.xs has 
changed in two months.  in fact, the majority of files in Gtk2 has not 
changed since the copyright notices that were added in 0.20.