GimpFrame: Switch to using the GtkContainer::add signal
The GtkContainer::child property is deprecated and is write-only, thus its notify signal won't work. Use the GtkContainer::add signal instead.
Fixes #2928 (closed)
Edited by Luca Bacci
The GtkContainer::child property is deprecated and is write-only, thus its notify signal won't work. Use the GtkContainer::add signal instead.
Fixes #2928 (closed)