Access to widget in GTK+

Building a GTK+ widget dynamically from code allows for easy access to the child widg开发者_运维技巧ets directly.

Now, how do I access to the child widgets when building a GTK+ Dialog (as example) from a .glade file?

class ConfigDialog(object):
    def __init__(self, glade_file, testing=False):
        self.testing=testing
        builder = gtk.Builder()
        builder.add_from_file(glade_file)
        self.dialog = builder.get_object("config_dialog")
        self.dialog._testing=testing
        self.dialog._builder=builder

I've tinkering a bit with .get_internal_child without success.

Q: let's say I want to access the widget named "name_entry", how would I go about it?

Already you are making the call

self.dialog = builder.get_object("config_dialog")

You should also be able to do

self.nameEntry = builder.get_object("name_entry")

This is at least how python-glade works and I assume GtkBuilder is the same.

In addition, if you want to search for a named widget and the Builder instance isn't available, you could try using the following utility function:

def get_child_by_name(parent, name):
    """
    Iterate through a gtk container, `parent`, 
    and return the widget with the name `name`.
    """
    def iterate_children(widget, name):
        if widget.get_name() == name:
            return widget
        try:
            for w in widget.get_children():
                result = iterate_children(w, name)
                if result is not None:
                    return result
                else:
                    continue
        except AttributeError:
            pass
    return iterate_children(parent, name)