On 1 February 2011 00:39, James Morris <jwm.art....@gmail.com> wrote: > On 31 January 2011 13:32, Jannis Pohlmann <jan...@xfce.org> wrote: > >>> 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 > > It looks straight forward at first glance but soon becomes apparent > it's not at all :/ > > I want to pass a const char** null terminated list of C strings - > which is obviously not a G_TYPE_FILE! > I thought maybe I could use G_TYPE_ARRAY but that results in: > > GLib-GObject-CRITICAL **: g_param_spec_object: assertion `g_type_is_a > (object_type, G_TYPE_OBJECT)' failed > > So I've no idea what to do there. It's as clear as mud; I'm a GObject newb.
I've solved it in a way. Have gone back to using a parameter-less constructor, and a much simplified init function. Instead the code to generate the widgets is in an 'add' style function in which I do all the things intended. It works. Thanks, James. -- _ : http://jwm-art.net/ -audio/image/text/code/ _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
