Kjell,
That worked! Thanks!
Dan
On 8/30/22 08:06, Kjell Ahlstedt wrote:
Den 2022-08-29 kl. 23:37, skrev Dan Lo Forte:
I have a glade file from which I load a derived widget that has a
Glib::Property. When I load the main window, I get the following error:
```
GLib-GObject-CRITICAL **: validate_and_install_class_property:
assertion 'class->set_property != NULL' failed
```
I have created a simplified example, as per this page:
https://developer-old.gnome.org/gtkmm-tutorial/stable/sec-builder-using-derived-widgets.html.en,
using a derived Gtk::Button and still see the error.
Your simplified example is very similar to the example at
https://gitlab.gnome.org/GNOME/gtkmm-documentation/-/tree/gtkmm-3-24/examples/book/builder/derived,
which does not print an error message. There is a significant
difference in the glade file (glade_str). You shall change GtkButton
to gtkmm__CustomObject_DerivedButtonProp, the Gtype name of your
button class.
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