Fw: [PHP-GTK-DEV] Connection methods

OK, now I've experimented you can forget my first paragraph earlier, you'd just use connect_simple() there because there aren't any signal parameter values you'd need to consider. In GTK 2 tests the place connect_swapped() is most often used is: g_signal_connect_swapped (button, "clicked", G_CALLBACK (gtk_widget_destroy), window); which we can do without needing connect_swapped(), for the same reason. I'm still wondering about what happens if you want to differentiate a right-click from a left-click in the callback, e.g. to bring up a context-driven popup menu? What if the callback was a flexible one that could be called from any of several widgets and/or in any of several ways? We have workarounds for the event signals group, in the shape of gtk::get_current_event(), $event->type, and gtk::get_event_widget($event), so we don't necessarily need to pass $event as a signal parameter - but would these cater for every situation? What happens when, for example, row and column data are passed as signal parameters - are these _always_ the kind of signals that use connect()? I agree we could do with some real-life examples, but I'm the last person to have any. Perhaps Pablo, Madeleine or Tom could argue more convincingly, or prove me wrong? ----- Original Message ----- From: "Steph" <steph@zend.com> To: "Andrei Zmievski" <andrei@gravitonic.com> Cc: "PHP DEV" <php-gtk-dev@lists.php.net>; "Scott Mattocks" <scott@crisscott.com> Sent: Sunday, October 16, 2005 1:58 PM Subject: Re: [PHP-GTK-DEV] Connection methods > The one just about everyone uses is $window->connect_object('destroy', > array('gtk', 'main_quit')); > > It'd be confusing (and pointless) if you also passed $window, and it'd get > needlessly complicated if you just used a straight connect() call. > > You'd also use it anywhere you didn't want to pass the initial object but > wanted to use one of its signals, and that does arise a fair deal. > Sometimes you'll need the signal's parameters to be passed too, sometimes > you won't. In event signals it's fairly common to want to do something with > $event as well as with your user data (ie other widgets etc), but at present > we don't have a way of passing $event without passing the initial object. > > > ----- Original Message ----- > From: "Andrei Zmievski" <andrei@gravitonic.com> > To: "Steph" <steph@zend.com> > Cc: "PHP DEV" <php-gtk-dev@lists.php.net>; "Scott Mattocks" > <scott@crisscott.com> > Sent: Friday, October 14, 2005 9:40 PM > Subject: Re: [PHP-GTK-DEV] Connection methods > > > > Can you please an example of this? > > > > -Andrei > > > > On Oct 14, 2005, at 12:37 PM, Steph wrote: > > > > > Yes, because if you want to do something with an object that isn't > > > responsible for emitting the signal, it makes the code much more > > > readable if > > > you use connect_object() or something equivalent. Think about > > > key-press-event signal and such. > > > > > > We do need connect_replace() then... > > > > > > Gone! > > > > > > ----- Original Message ----- > > > From: "Andrei Zmievski" <andrei@gravitonic.com> > > > To: "Steph" <steph@zend.com> > > > Cc: "PHP DEV" <php-gtk-dev@lists.php.net>; "Scott Mattocks" > > > <scott@crisscott.com> > > > Sent: Friday, October 14, 2005 8:29 PM > > > Subject: Re: [PHP-GTK-DEV] Connection methods > > > > > > > > >> No, connect_replace() would *not* act like connect_object(). It would > > >> substitute user-specified object instead of the signal one, e.g.: > > >> > > >> $drawarea->connect_object('button_press_event', > > >> 'process_object', > > >> $anotherarea); > > >> > > >> function process_object($event, $anotherarea) > > >> { > > >> /* note that $anotherarea is passed after event */ > > >> } > > >> > > >> $drawarea->connect_replace('button_press_event', > > >> 'process_replace', > > >> $anotherarea); > > >> > > >> function process_replace($anotherarea, $event) > > >> { > > >> /* note that $anotherarea is passed in place of the signal widget */ > > >> } > > >> > > >> And also I'm curious, why do you need connect_object() or > > >> connect_replace()? Any specific reason? > > >> > > >> -Andrei > > >> > > >> > > >> On Oct 14, 2005, at 11:18 AM, Steph wrote: > > >> > > >>> No, it's probably me that's confused :) I'm not good when it > > >>> comes > > >>> to > > >>> discussing things theoretically rather than in practical terms. > > >>> > > >>> So what are you saying, Andrei - connect_simple() will _only_ pass > > >>> user > > >>> data, and connect_replace() will act as connect_object() did? > > >>> > > >>> If so we do need connect_replace().... > > >>> > > >>> > > >> > > > > -- > PHP-GTK Development Mailing List (http://gtk.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php >