<object class="GtkSpinButton" id="size_spin">
<property name="can-focus">1</property>
<property name="adjustment">spin_adjustment</property>
+ <property name="valign">center</property>
<signal name="output" handler="output_cb"/>
</object>
<packing>
<object class="GtkSpinButton" id="size_spin2">
<property name="can-focus">1</property>
<property name="adjustment">spin_adjustment</property>
+ <property name="valign">center</property>
<signal name="output" handler="output_cb"/>
</object>
<packing>