Emmanuele, > In order to do that, you should use `g_type_ensure()` inside the instance initialization function of the parent's widget class
Since using Vala, from what I can see in case of using [GtkTemplate] the g_type_ensure is generated, but when just subclassing a GtkWidget it doesn't exists in the generated .c, am I right ? And what I can do to g_type_ensure be present in generated .c in the second case ? Thanks. 2015-10-04 10:40 GMT-03:00 Emmanuele Bassi <eba...@gmail.com>: > Hi; > > On 3 October 2015 at 02:14, Victor Aurélio Santos > <victoraur.san...@gmail.com> wrote: >> How can I do that ? >> Just build all together results in this warning: >> >>> (ajami:3475): Gtk-CRITICAL **: Error building template class >>> 'AjamiMainWindow' for an instance of type 'AjamiMainWindow': Invalid object >>> type 'HVMeter' on line 2 >> >> I've asked on SO[1] and got only one answer. >> >> I stick at "_get_type" workaround/hack but I didn't like it and I >> can't do the same thing in Vala (I've not found how to do the same >> thing). >> >> More details can be found on SO question. >> >> So, what I really want to know is what is the best option to >> accomplish this in Vala and in C too. >> >> [1]: >> http://stackoverflow.com/questions/24235937/custom-gtk-widget-with-template-ui > > If you have an internal, private widget that you use as a child in a > template, you'll need to ensure that the type system knows about the > child widget's type before initializing the template that references > it. > > In order to do that, you should use `g_type_ensure()` inside the > instance initialization function of the parent's widget class, right > before calling `gtk_widget_init_template()`; for instance: > > g_type_ensure (hv_meter_get_type ()); > > This is also what GTK+ itself does: > https://git.gnome.org/browse/gtk+/tree/gtk/gtkfilechooserwidget.c#n8598 > > Ciao, > Emmanuele. > > -- > https://www.bassi.io > [@] ebassi [@gmail.com] -- Victor Aurélio Santos _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
