Don't create the label manually. It is not necessary,
and letting the button do it also improves the
accessibility setup.
<object class="GtkButton">
<property name="valign">center</property>
<property name="action-name">win.run</property>
- <style>
- <class name="text-button"/>
- </style>
- <child>
- <object class="GtkLabel">
- <property name="label" translatable="yes">Run</property>
- </object>
- </child>
+ <property name="label" translatable="yes">Run</property>
</object>
</child>
<child type="end">