My_GtkUi/Gtkmm4_UI8/res/game24.ui

<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <requires lib="gtk" version="4.0"/>
  <!-- <object class="GtkWindow" id="window"> -->
  <template class="Game24App" parent="GtkWindow">
    <property name="default-width">440</property>
    <property name="default-height">260</property>
    <property name="child">
      <object class="GtkBox">
        <property name="margin-start">5</property>
        <property name="margin-end">5</property>
        <property name="margin-top">5</property>
        <property name="margin-bottom">5</property>
        <property name="hexpand">1</property>
        <property name="vexpand">1</property>
        <property name="orientation">vertical</property>
        <property name="spacing">10</property>
        <child>
          <object class="GtkBox">
            <property name="halign">center</property>
            <child>
              <object class="GtkLabel">
                <property name="label" translatable="1">The Numbers:</property>
              </object>
            </child>
            <child>
              <object class="GtkLabel" id="label_numbers"/>
            </child>
          </object>
        </child>
        <child>
          <object class="GtkLabel">
            <property name="label" translatable="1">Input answer, for example, ((6+6)+6)+6 is an answer,  
&quot;None&quot; for no answer</property>
            <property name="justify">center</property>
          </object>
        </child>
        <child>
          <object class="GtkEntry" id="entry_ans">
            <property name="focusable">1</property>
            <property name="hexpand">1</property>
          </object>
        </child>
        <child>
          <object class="GtkGrid">
            <property name="hexpand">1</property>
            <property name="vexpand">1</property>
            <property name="row-homogeneous">1</property>
            <property name="column-homogeneous">1</property>
            <child>
              <object class="GtkButton" id="btn7">
                <property name="label" translatable="1">7</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="hexpand">1</property>
                <property name="vexpand">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">0</property>
                  <property name="row">0</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btn8">
                <property name="label" translatable="1">8</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">1</property>
                  <property name="row">0</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btn9">
                <property name="label" translatable="1">9</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">2</property>
                  <property name="row">0</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btnadd">
                <property name="label" translatable="1">+</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">3</property>
                  <property name="row">0</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btn4">
                <property name="label" translatable="1">4</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">0</property>
                  <property name="row">1</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btn5">
                <property name="label" translatable="1">5</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">1</property>
                  <property name="row">1</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btn6">
                <property name="label" translatable="1">6</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">2</property>
                  <property name="row">1</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btnsubb">
                <property name="label" translatable="1">-</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">3</property>
                  <property name="row">1</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btn1">
                <property name="label" translatable="1">1</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">0</property>
                  <property name="row">2</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btn2">
                <property name="label" translatable="1">2</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">1</property>
                  <property name="row">2</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btn3">
                <property name="label" translatable="1">3</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">2</property>
                  <property name="row">2</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btnmul">
                <property name="label" translatable="1">*</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">3</property>
                  <property name="row">2</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btnleft">
                <property name="label" translatable="1">(</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">0</property>
                  <property name="row">3</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btn0">
                <property name="label" translatable="1">0</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">1</property>
                  <property name="row">3</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btnright">
                <property name="label" translatable="1">)</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">2</property>
                  <property name="row">3</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btndiv">
                <property name="label" translatable="1">/</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
                <property name="has-frame">0</property>
                <layout>
                  <property name="column">3</property>
                  <property name="row">3</property>
                </layout>
              </object>
            </child>
          </object>
        </child>
        <child>
          <object class="GtkBox">
            <property name="halign">center</property>
            <property name="spacing">10</property>
            <child>
              <object class="GtkButton" id="btnstart">
                <property name="label" translatable="1">Start</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btnnext">
                <property name="label" translatable="1">Next</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btncheck">
                <property name="label" translatable="1">Check</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btnclear">
                <property name="label" translatable="1">Clear</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="btnexit">
                <property name="label" translatable="1">Exit</property>
                <property name="focusable">1</property>
                <property name="receives-default">1</property>
              </object>
            </child>
          </object>
        </child>
      </object>
    </property>
  </template>
  <!-- </object> -->
</interface>