Peyman schreef:
> Hi, a while back I inquired about blocking signals, and we came to the
> conclusion that via glade there is no way to get a hold of the handler
> IDs, so we had to use handler_block_by_func(). At the time
> handler_block_by_func() didn't even work for me under python. I have
> switched over to C, and handler_block_by_func() finally works.
> Unfortunately, handler_unblock_by_func() does not work. I don't know
> if this is because it is corrupted, or b/c I am using it incorrectly.
> Quite frankly, I'm starting to lose my patience since there is very
> little help on the internet wrt blocking functions.
>
I'm using Glade too, and to block a function I use the following.
def checkbox_toggled(self, widget):
if self.blockCheckboxCallback: return
print "Checkbox toggled"
# More code
self.blockCheckboxCallback = True
# Do your thing here
self.blockCheckboxCallback = False
> I also can't seem to find a way to autoconnect signals AND save their
> handler IDs. This would seem like a very important option.
>
> It's getting to the point where I might start using brute force, and
> connecting every signal manually, but I hope someone informs me of an
> easier approach
>
> Thank You
>
>
> Peyman Askari
>
> On 11 Mar 2009, at 13:31, Walter Leibbrandt wrote:
>
>
>> Hi,
>>
>> Maybe I should just let some code do the talking. See attached script.
>>
>> The button's "clicked" handler adds an "x" to the entry. The toggle
>> button uses handler_(un)block_by_func() on addx_clicked so that it
>> is only enabled if the toggle button is active. Note that
>> handler_(un)block_by_func() was called on btn, seeing as that is the
>> widget to which the handler is connected.
>>
>> This is quite an exciting discovery for myself too. Seeing as its in
>> GObject and not in Glade, I can use this with my custom widgets too
>> and need not keep signal dictionaries anymore! :)
>>
>> P.S. In this context "handler" means the function/method connected
>> to a signal.
>>
>> Peyman wrote:
>>
>>> Hi Walter
>>>
>>> I am running into problems using it. To use
>>> handler_bloc_by_func(callable) you have to pass callable: a
>>> callable python object. I have tried using the widget itself, and
>>> it's callback functions, but neither is working. What exactly do i
>>> have to pass as a parameter. You made reference to passing the
>>> "handler" to it.
>>>
>>> Cheers
>>>
>>>
>>>
>>> Peyman Askari
>>>
>>> On 11 Mar 2009, at 12:53, Walter Leibbrandt wrote:
>>>
>>>
>>>> Hi,
>>>>
>>>> It seems that this has been asked before:
>>>> http://osdir.com/ml/gnome.gtk+.python/2003-04/msg00089.html
>>>>
>>>> Short answer: no, it doesn't seem like you can. I have, however,
>>>> found the handler_block_by_func() and handler_unblock_by_func()
>>>> methods of gobject.GObject. Although I haven't tested this yet, it
>>>> seems from the docs
>>>> (http://library.gnome.org/devel/pygobject/stable/class-gobject.html#method-gobject--handler-block-by-func
>>>>
>>>> ) that you can simply pass your handler to it to (un)block it from
>>>> being called.
>>>>
>>>> Let me know how/if it works.
>>>>
>>>> HTH,
>>>>
>>>> Peyman wrote:
>>>>
>>>>> I realize that once you call connect() it returns the handle_id.
>>>>> But if glade is doing this for me, are the handle id's stored
>>>>> somewhere? Surely there has to be a
>>>>> widget.get_handle_id('callback_function') method. I can't seem to
>>>>> find anything on this over the net though.
>>>>>
>>>> --
>>>> Walter Leibbrandt http://translate.org.za/blogs/walter
>>>> Software Developer +27 12 460
>>>> 1095 (w)
>>>> Translate.org.za
>>>>
>>>> Recent blogs:
>>>> * Firefox-style button with a pop-up menu
>>>> http://www.translate.org.za/blogs/walter/en/content/firefox-style-button-pop-menu
>>>> * Virtaal's MVCisation
>>>> * Things that changed the way I code
>>>>
>>>>
>>>>
>> --
>> Walter Leibbrandt http://translate.org.za/blogs/
>> walter
>> Software Developer +27 12 460 1095
>> (w)
>> Translate.org.za
>>
>> Recent blogs:
>> * Firefox-style button with a pop-up menu
>> http://www.translate.org.za/blogs/walter/en/content/firefox-style-button-pop-menu
>> * Virtaal's MVCisation
>> * Things that changed the way I code
>>
>>
>> #!/usr/bin/env python
>>
>> import gtk
>> import gtk.glade
>>
>> xml = gtk.glade.XML('gui.glade')
>> win = xml.get_widget('window')
>> btn = xml.get_widget('button')
>> entry = xml.get_widget('entry')
>>
>> def addx_clicked(*args):
>> entry.props.text += 'x'
>>
>> def enable_toggled(togglebtn):
>> if togglebtn.get_active():
>> btn.handler_unblock_by_func(addx_clicked)
>> else:
>> btn.handler_block_by_func(addx_clicked)
>>
>> win.connect('destroy', lambda *args: gtk.main_quit())
>> btn.connect('clicked', addx_clicked)
>> xml.get_widget('togglebutton').connect('toggled', enable_toggled)
>>
>> win.show_all()
>> gtk.main()
>> <gui.glade>
>>
>
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