Hey, On Mon, 31 Jan 2011 13:14:30 +0000 James Morris <jwm.art....@gmail.com> wrote:
> Hi, > > I'm trying to modify some existing code which uses gobject so that the > function to create a new object can take a parameter. The existing > code is quite simple, and my modifications simplify it further so I > don't want to spend a great deal of time messing about with Gobject > things. > > Can anyone point me in the direction of code examples where the > construction of the g object requires a parameter so I can see how to > do it please? - I can't make sense of the documentation. I usually do this by adding a construct or construct-only property to the object class and creating a my_object_new() function that takes a parameter for this property that I can then pass to g_object_new(). Here's a simple example from Xfce's XDG menu library garcon: GarconMenu is the object and it needs a menu file (a GFile object) to be constructed properly. So what we did is to to install a construct-only property like this: http://git.xfce.org/libs/garcon/tree/garcon/garcon-menu.c#n246 and write a _new() function that takes a GFile for this property and passes it to g_object_new(): http://git.xfce.org/libs/garcon/tree/garcon/garcon-menu.c#n459 This property will not be available in the init function (e.g. garcon_menu_init) but if you want to do something with it before the object can be used by the outside world, you can do that by overriding the GObject constructed function like you do with finalize or get_property. In constructed, the construct and construct-only properties will be set and you can do something with them. - Jannis _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
