Adding a customer cell renderer to a simplelist

[Daniel Kasak <dkasak nusconsulting com au>]

Hi all.

I'm having my 2nd attempt at custom cell renderers.
I've got the CellRendererSpinButton from the example folder in a package.

So far, I've got:

---

my $slist = Gtk2::SimpleList->new_from_treeview(
                                                       
$prospects->get_widget('Locations_SList'),
                                                       
'DanPK'             => 'hidden',
                                                       
'LocNo'             => 'hidden',
                                                       'Branch 
Name'       => 'text',
                                                       
'Address'           => 'text',
                                                       
'Suburb'            => 'text',
                                                       
'State'             => 'text'
                                              );

for (my $counter = 0; $counter < 4; $counter ++) {
   $slist->set_column_editable($counter, 1);
}

$slist->get_model->signal_connect("row-changed", \&on_Locations_Edited);

my $renderer = Gtk2::CellRendererSpinButton->new();

$renderer->set(
                   mode    => "editable",
                   min     => 0,
                   max     => 1000,
                   step    => 1,
                   digits  => 0
             );

$renderer->signal_connect(edited => \&locations_postcode_cell_edited);

$column = Gtk2::TreeViewColumn->new_with_attributes(
                                                       "Postcode",
                                                       $renderer
                                                  );
  
$slist->append_column($column);

---

The column gets added to the simplelist, and the spinbutton renderer 
appears when I edit the cell, but data that I load into the simplelist 
doesn't get into the cellrenderer.

I'm pretty sure this is caused by the same problem as I had on my first 
attempt. Back then I was told:

> 2) when the column is asked to set the data for the popup render, it 
> fetches the data from the model as a string (char*, known to the glib 
> type system as 'gchararray'), and passes that value to the popup cell 
> renderer, but the type system sees that the cell renderer wants a 
> boxed object of type 'Glib::Scalar', which is registered with the C 
> type system as 'GPerlSV'.  there is no way to convert that, so you get 
> this warning: 

and:

> use a 'scalar' column type when you create the simplelist.
>
> note that in the cellrenderer_popup.pl example's driver code, the list 
> data column is created as 'Glib::Scalar', and i used a custom cell 
> data callback to format the list for display. 

Unfortunately I didn't completely understand what this meant at the 
time, and still don't.
What does it mean that I have to use a 'scalar' column type when I 
create the simplelist? Is this referring to the line:

> $column = Gtk2::TreeViewColumn->new_with_attributes(
>                                                         "Postcode",
>                                                         $renderer
>                                                    );

or am I supposed to create the column *with* the simplelist ( instead of 
adding it as above ) and change it's renderer?

--
Daniel Kasak
IT Developer
NUS Consulting Group
Level 5, 77 Pacific Highway
North Sydney, NSW, Australia 2060
T: (+61) 2 9922-7676 / F: (+61) 2 9922 7989
email: dkasak nusconsulting com au
website: http://www.nusconsulting.com.au

Title: CanIt Vote for ID 90286

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