[pygtk] Problem with Notebook - stop-emission doubts

[John Finlay]

Alessandro Dentella wrote:
> On Wed, Dec 24, 2008 at 01:22:49PM +0100, Gian Mario Tagliaretti wrote:
>   
>> On Wed, Dec 24, 2008 at 9:57 AM, Frédéric
>> <frederic.mantegazza at gbiloba.org> wrote:
>>
>>     
>>> PS: BTW, where did you find the stop_emission() method? I can't retreive it
>>> in the doc...
>>>       
>> it a gobject method:
>> http://library.gnome.org/devel/pygobject/stable/class-gobject.html#method-gobject--stop-emission
>>     
>
> following the docs I have several questions?
>
>   1. the explanation is exactly the same as for "emit_stop_by_name": which
>      is the difference? 
>
>   
They are the same.
> """
>   The stop_emission() method stops the current emission of the signal
>   specified by detailed_signal
> """
>
>   2. "current emission" means the emission of the signal that is now
>      handled? if this is the case, what's the need for specifying the name?
>   
A signal could be emitted within a signal emission.
>   3. How is it different from returning True? 
>      I tested it with::
>
>         b = gtk.Button("Press me")
>         e = gtk.Entry()
>         b.connect('clicked', self.on_clicked1)
>         b.connect('clicked', self.on_clicked2)
>
>         e.connect('key-press-event', self.on_key_press_event1)
>         e.connect('key-press-event', self.on_key_press_event2)
>
>
>      on_clicked2 cannot be inhibited returning True from on_clicked1 while 
>      on_key_press_event1 *can* be inhibited simply returning True.
>
>      Both can be inhibited using stop_emission.
>  
Some signals provide an explicit means of stopping the signal emission 
using a return value from a handler. The "clicked" handler is not 
supposed to provide a return value so returning True does nothing.

John