using Gtk 4.0; using Adw 1; template AdwcustomizerAppTypeDialog : Adw.MessageDialog { [extra-child] Box { orientation: vertical; Label { styles ["heading"] label: "Select app types you want to affect:"; } CheckButton gtk4-app-type { label: "Libadwaita and GTK 4 apps"; active: true; } CheckButton gtk3-app-type { label: "GTK 3 apps (adw-gtk3 theme required)"; } } }