[Glade-users] glade 3.6 and user data in callback function

[daniel]

Tristan Van Berkom wrote:
> On Wed, May 6, 2009 at 2:34 PM, daniel <drmartens at gnu.univ.gda.pl> wrote:
>>
>> Yes, I'm using GtkBuilder. In Glade, when I start typing in "user data"
>> column, I can see the list of objects I can choose from (e.g. the models
>> I have already defined), so I simply choose one.
>> But if I add an additional argument to my callback function that would
>> reflect the change in glade, I get 'too many arguments' error, which
> 
> Just to be clear, you get the error "too many arguments" from GtkBuilder
> at startup time ?
> 
> Could you file a bug against Glade ? then I will look at it and if its
> a bug in GtkBuilder I'll forward it to GTK+ bugzilla.
> 

I'm sorry for not being clear. This is not a startup error. The error is
simply thrown, when the specific signal is emitted and the handler called.

So for example, I have toggle in a treeview. And the "toggled" signal
has "user data" column filled with a name of some object.
So my callback function is something like:
def on_toggled(self, cell, path, user_data)

When I run my app and click the toggle, I will get:
TypeError: on_toggled() takes exactly 4 arguments (3 given)

However, when I remove "user_data" param from my callback definition,
everything works. So maybe the "user data" param is never passed?

The relevant part from the builder file (different names):
<object class="GtkCellRendererToggle" id="task_toggle">
<signal name="toggled" handler="on_task_completed" object="tasks_model"/>
</object>

So I guess it's not a bug in glade...

daniel