Re: Are there such tings like custom signals?
Il 20/01/2012 18.08, Jack ha scritto: However, that is separate from knowing that the button has been pushed, so you can then start the communications. For this, is there any reason to use a custom signal? Wouldn't it be easier to catch the standard signal emitted when a button is pushed, by attaching a call-back routine? Infact there is no need for a custom signal once you know about GIOChannel. But my question was intended for general cases. If I need to trigger a complicated task when a button is pushed I'll write a callback to manage the standard signal in which I'll start my $COMPLEX_PROCESS then return. The question was about how to write $COMPLEX_PROCESS: it doesn't involve GUI so it doesn't have any standard signal, but I'd like to have the signal-callback paradigm and I was wondering if GTK gives me some tool or if I have to rely on an external infrastructure for it. Maybe I'm misunderstanding something: remember, I'm really new in this world and my questions could and probably are stupid... -- Regards, Manuel Ferrero RD department Reer SpA Tel. +39 011 2482215 Fax. +39 011 859867 L'utilizzo non autorizzato del presente messaggio e' vietato e potrebbe costituire reato. Se il presente messaggio non e' a Lei indirizzato, il suo contenuto non deve essere considerato come trasmesso o autorizzato dalla Reer SpA; in tale caso Le saremmo grati se, via e-mail, ce ne comunicasse l'errata ricezione. The unauthorized use of this e-mail is prohibited and could constitute an offence. If you are not the intended recipient of this message its contents shall be understood as neither given nor endorsed by Reer SpA. Please notify Reer SpA by e-mail immediately in that case. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Are there such tings like custom signals?
On 01/23/2012 02:18 AM, Manuel Ferrero wrote: Il 20/01/2012 18.08, Jack ha scritto: However, that is separate from knowing that the button has been pushed, so you can then start the communications. For this, is there any reason to use a custom signal? Wouldn't it be easier to catch the standard signal emitted when a button is pushed, by attaching a call-back routine? Infact there is no need for a custom signal once you know about GIOChannel. But my question was intended for general cases. If I need to trigger a complicated task when a button is pushed I'll write a callback to manage the standard signal in which I'll start my $COMPLEX_PROCESS then return. The question was about how to write $COMPLEX_PROCESS: it doesn't involve GUI so it doesn't have any standard signal, but I'd like to have the signal-callback paradigm and I was wondering if GTK gives me some tool or if I have to rely on an external infrastructure for it. GTK indeed gives you a tool for generating your own signals. You can then catch them normally. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Are there such tings like custom signals?
On Mon, 23 Jan 2012 08:41:22 -0700 Michael Torrie torr...@gmail.com wrote: On 01/23/2012 02:18 AM, Manuel Ferrero wrote: Il 20/01/2012 18.08, Jack ha scritto: However, that is separate from knowing that the button has been pushed, so you can then start the communications. For this, is there any reason to use a custom signal? Wouldn't it be easier to catch the standard signal emitted when a button is pushed, by attaching a call-back routine? Infact there is no need for a custom signal once you know about GIOChannel. But my question was intended for general cases. If I need to trigger a complicated task when a button is pushed I'll write a callback to manage the standard signal in which I'll start my $COMPLEX_PROCESS then return. The question was about how to write $COMPLEX_PROCESS: it doesn't involve GUI so it doesn't have any standard signal, but I'd like to have the signal-callback paradigm and I was wondering if GTK gives me some tool or if I have to rely on an external infrastructure for it. GTK indeed gives you a tool for generating your own signals. You can then catch them normally. This runs the risk of being horribly misunderstood. You don't catch emissions from GSignal objects, you connect to them (you catch unix/C asynchronous signals and interrupts). And rather than generating a GSignal, you implement a GObject which registers the signal in its class init function to connect to, and emit on the signal. But the OP's reference to GIOChannels (which don't use GSignals) may indicate that he wants something different, namely to execute an event in a glib main loop. g_idle_add() is available for that. Chris ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Are there such tings like custom signals?
I'm learning GTK+ and I was able to write, compile and run a simple code on my win32 PC to create a window with a button in it and monitor with a callback if the user presses the button. I learned that GTK+ reacts to user events signalling on the object that received the event. Now I'd like to execute some custom code when the button is pressed, i.e. I'd like to open a COM port and send some strings on it and then wait for an answer. I was wondering if there is some custom signal I can use to keep the same event-driven philosophy to exchange messages between process. Maybe the question is not well placed, I'm really newbie on this programmation style, I'm an embedded C developer so I don't know a lot about GUI and OSes... TIA GTK+ 2.24.8 Windows XP -- Regards, Manuel Ferrero RD department Reer SpA Tel. +39 011 2482215 Fax. +39 011 859867 L'utilizzo non autorizzato del presente messaggio e' vietato e potrebbe costituire reato. Se il presente messaggio non e' a Lei indirizzato, il suo contenuto non deve essere considerato come trasmesso o autorizzato dalla Reer SpA; in tale caso Le saremmo grati se, via e-mail, ce ne comunicasse l'errata ricezione. The unauthorized use of this e-mail is prohibited and could constitute an offence. If you are not the intended recipient of this message its contents shall be understood as neither given nor endorsed by Reer SpA. Please notify Reer SpA by e-mail immediately in that case. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Are there such tings like custom signals?
Hi Manuel, Please see glibGIOChannel. It is unified way to make I/O data from files, sockets an so on. I am using it for Ethernet sockets under win32. Best regars, Igor 2012/1/20, Manuel Ferrero mferr...@reer.it: I'm learning GTK+ and I was able to write, compile and run a simple code on my win32 PC to create a window with a button in it and monitor with a callback if the user presses the button. I learned that GTK+ reacts to user events signalling on the object that received the event. Now I'd like to execute some custom code when the button is pressed, i.e. I'd like to open a COM port and send some strings on it and then wait for an answer. I was wondering if there is some custom signal I can use to keep the same event-driven philosophy to exchange messages between process. Maybe the question is not well placed, I'm really newbie on this programmation style, I'm an embedded C developer so I don't know a lot about GUI and OSes... TIA GTK+ 2.24.8 Windows XP -- Regards, Manuel Ferrero RD department Reer SpA Tel. +39 011 2482215 Fax. +39 011 859867 L'utilizzo non autorizzato del presente messaggio e' vietato e potrebbe costituire reato. Se il presente messaggio non e' a Lei indirizzato, il suo contenuto non deve essere considerato come trasmesso o autorizzato dalla Reer SpA; in tale caso Le saremmo grati se, via e-mail, ce ne comunicasse l'errata ricezione. The unauthorized use of this e-mail is prohibited and could constitute an offence. If you are not the intended recipient of this message its contents shall be understood as neither given nor endorsed by Reer SpA. Please notify Reer SpA by e-mail immediately in that case. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Are there such tings like custom signals?
On 01/20/2012 06:42 AM, Manuel Ferrero wrote: I was wondering if there is some custom signal I can use to keep the same event-driven philosophy to exchange messages between process. Of course. Though the other poster's idea of using gio channels is a good one. But yes you can create custom signals and emit them. http://developer.gnome.org/gtk/stable/gtk-Signals.html http://stackoverflow.com/questions/1557025/create-and-emit-gtk-signal ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Are there such tings like custom signals?
On 2012.01.20 11:36, Michael Torrie wrote: On 01/20/2012 06:42 AM, Manuel Ferrero wrote: I was wondering if there is some custom signal I can use to keep the same event-driven philosophy to exchange messages between process. Of course. Though the other poster's idea of using gio channels is a good one. But yes you can create custom signals and emit them. http://developer.gnome.org/gtk/stable/gtk-Signals.html http://stackoverflow.com/questions/1557025/create-and-emit-gtk-signal Aren't there two separate issue here? Using gio channels is a way to deal with communicating with the COM channel. However, that is separate from knowing that the button has been pushed, so you can then start the communications. For this, is there any reason to use a custom signal? Wouldn't it be easier to catch the standard signal emitted when a button is pushed, by attaching a call-back routine? ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
