Re: 'Cannot convert arbitrary SV to GValue' when setting child property of GtkStack

[Mike Martin <mike redtux org uk>]

Hi , I am migrating an app from gtk2 to gtk3 and when I call child_get from a table widget I am getting

Gtk3:;Table has no method child_get.

Could this be related?

On 10 August 2016 at 12:40, Daniel Kasak <d j kasak dk gmail com> wrote:

That's it :) Thanks Torsten.

Dan

On Tue, Aug 9, 2016 at 5:53 PM, "Torsten Schönfeld" <kaffeetisch gmx de> wrote:
> "Daniel Kasak" <d j kasak dk gmail com>:
>> I'm trying to set the 'needs-attention' property of a GtkStack's child page.
>>
>> When I go:
>>
>> use Glib qw( TRUE FALSE );
>>
>> my $needs_attention = FALSE;
>>
>> if ( $self->{ 'Column' . $i . 'Datasheet' }->count ) {
>>     $needs_attention = TRUE;
>> }
>>
>> my $child = $self->{stack}->get_child_by_name( 'page' . $i );
>>
>> $self->{stack}->child_set_property(
>>     $child
>>   , 'needs-attention'
>>   , $needs_attention
>> );
>>
>>  ... I get:
>>
>> Cannot convert arbitrary SV to GValue'
>
> Looks like the Gtk3::Container::child_set* and child_get* methods need overrides.  Fow now, child_set_property expects a GValue, so as a workaround, try something like this:
>
>   my $gvalue = Glib::Object::Introspection::GValueWrapper->new (
>     'Glib::Boolean', $needs_attention);
>   $self->{stack}->child_set_property ($child, 'needs-attention', $gvalue);
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