helloworld.ui

<?xml version='1.0' encoding='utf-8'?>
<interface>
  <object class="ttk.Frame" id="mainwindow">
    <property name="height">200</property>
    <property name="width">200</property>
    <layout>
      <property name="column">0</property>
      <property name="propagate">True</property>
      <property name="row">0</property>
    </layout>
    <child>
      <object class="ttk.Label" id="Label_1">
        <property name="font">{PT Serif Caption} 20 {bold}</property>
        <property name="padding">50</property>
        <property name="text" translatable="yes">Hellow World !</property>
        <layout>
          <property name="column">0</property>
          <property name="propagate">True</property>
          <property name="row">0</property>
        </layout>
      </object>
    </child>
    <child>
      <object class="ttk.Button" id="quit_button">
        <property name="command">on_quit_button_click</property>
        <property name="text" translatable="yes">Quit</property>
        <layout>
          <property name="column">0</property>
          <property name="propagate">True</property>
          <property name="row">1</property>
        </layout>
      </object>
    </child>
  </object>
</interface>