GtkVBox is deprecated with GTK 3.2. [1]
Use GtkBox instead.
[1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/3.2.0/gtk/gtkvbox.c#L47
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
<property name="gravity">GDK_GRAVITY_NORTH_WEST</property>
<child>
- <object class="GtkVBox" id="vbox1">
+ <object class="GtkBox" id="vbox1">
+ <property name="orientation">vertical</property>
<property name="visible">True</property>
<property name="homogeneous">False</property>
<property name="spacing">0</property>