Text appended to ComboBox appears blank

[Joseph Thames]

Hello list,

I am appending text to a couple of ComboBoxes In the following code snippet:

   clear_text($LeftTreeComboBox) if $ntreesleft;
   clear_text($RightTreeComboBox) if $ntreesright;
   for($i=1; $i<=$count; $i++) {
      $temp = getstack("Archives",$i-1);
      Debug_Info("$i $temp\n");
      append_text($LeftTreeComboBox,$temp);
      append_text($RightTreeComboBox,$temp);
      $ntreesleft = $ntreesright = $count;   
   }

where:

sub append_text {
    my ($combobox, $text) = @_;
    my $model = $combobox->get_model;
    $model->set ($model->append, 0, $text);
}

sub clear_text {
   my $combobox = shift;
   my $model = $combobox->get_model;
   $model->clear;
}

but no visible text appears in the ComboBoxes. They both pop down as if text was appended, but none is visible. The Debug_Info output shows that the $temp text is there, but is doesn't show up in the ComboBoxes.

The ComboBox ListStore model was previously defined in a callback like the following, where the ComboBox widget was captured in the global variable $LeftTreeComboBox.

# Callback name: on_LeftTreeComboBox_expose_event
# Called from widget: LeftTreeComboBox
#
sub on_LeftTreeComboBox_expose_event {
   my ( $self, $widget ) = @_;
   return if $LeftTreeComboBox;
   Debug_Call( "\n"); 
   $LeftTreeComboBox = $widget;
   my $model = Gtk2::ListStore->new("Glib::String");
   $widget->set_model ($model);
   Debug_Exit("\n");
}

Anyone have an idea what is wrong here?

Thanks
--
Joseph 'Bear' Thames
Meta Science Foundation
[phone] - Cell Phone
beartham@...

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[Matthew Braid-2]

Hi,

I haven't had a proper look (just got out of bed :) , but I remember
seeing behaviour like this a while ago in my first attempts at Gtk.
Are you setting up a renderer in the combo box to show the text, and
have you packed it properly? Not sure if that's the problem here, but
it's the mistake I made and looked the same ('empty' drop down that
was the right length).

MB

2009/7/30 Joseph Thames <beartham@...>:

> Hello list,
>
> I am appending text to a couple of ComboBoxes In the following code snippet:
>
>    clear_text($LeftTreeComboBox) if $ntreesleft;
>    clear_text($RightTreeComboBox) if $ntreesright;
>    for($i=1; $i<=$count; $i++) {
>       $temp = getstack("Archives",$i-1);
>       Debug_Info("$i $temp\n");
>       append_text($LeftTreeComboBox,$temp);
>       append_text($RightTreeComboBox,$temp);
>       $ntreesleft = $ntreesright = $count;
>    }
>
> where:
>
> sub append_text {
>     my ($combobox, $text) = @_;
>     my $model = $combobox->get_model;
>     $model->set ($model->append, 0, $text);
> }
>
> sub clear_text {
>    my $combobox = shift;
>    my $model = $combobox->get_model;
>    $model->clear;
> }
>
>
> but no visible text appears in the ComboBoxes. They both pop down as if text
> was appended, but none is visible. The Debug_Info output shows that the
> $temp text is there, but is doesn't show up in the ComboBoxes.
>
> The ComboBox ListStore model was previously defined in a callback like the
> following, where the ComboBox widget was captured in the global variable
> $LeftTreeComboBox.
>
> # Callback name: on_LeftTreeComboBox_expose_event
> # Called from widget: LeftTreeComboBox
> #
> sub on_LeftTreeComboBox_expose_event {
>    my ( $self, $widget ) = @_;
>    return if $LeftTreeComboBox;
>    Debug_Call( "\n");
>    $LeftTreeComboBox = $widget;
>    my $model = Gtk2::ListStore->new("Glib::String");
>    $widget->set_model ($model);
>    Debug_Exit("\n");
> }
>
>
> Anyone have an idea what is wrong here?
>
> Thanks
> --
> Joseph 'Bear' Thames
> Meta Science Foundation
> [phone] - Cell Phone
> beartham@...
>
> _______________________________________________
> gtk-perl-list mailing list
> gtk-perl-list@...
> http://mail.gnome.org/mailman/listinfo/gtk-perl-list
>
>

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