MainWindow.glade (Código)

<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.38.2 -->
<interface>
    <requires lib="gtk+" version="3.24"/>
    <object class="GtkTreeStore" id="tree_store">
        <columns>
            <!-- column-name state -->
            <column type="gchararray"/>
        </columns>
    </object>
    <object class="GtkApplicationWindow" id="MainWindow">
        <property name="can-focus">False</property>
        <property name="title" translatable="yes">Gtk.TreeView, Gtk.TreeStore</property>
        <property name="default-width">683</property>
        <property name="default-height">384</property>
        <property name="icon">../../../assets/icons/icon.png</property>
        <child>
            <object class="GtkBox">
                <property name="visible">True</property>
                <property name="can-focus">False</property>
                <property name="border-width">12</property>
                <property name="orientation">vertical</property>
                <property name="spacing">6</property>
                <child>
                    <object class="GtkScrolledWindow">
                        <property name="visible">True</property>
                        <property name="can-focus">True</property>
                        <property name="shadow-type">in</property>
                        <child>
                            <object class="GtkTreeView" id="treeview">
                                <property name="visible">True</property>
                                <property name="can-focus">True</property>
                                <property name="tooltip-text" translatable="yes">2 Clique para selecionar</property>
                                <property name="model">tree_store</property>
                                <signal name="row-activated" handler="on_row_double_click" swapped="no"/>
                                <child internal-child="selection">
                                    <object class="GtkTreeSelection"/>
                                </child>
                                <child>
                                    <object class="GtkTreeViewColumn" id="col_state">
                                        <property name="title" translatable="yes">Estado</property>
                                        <property name="sort-column-id">0</property>
                                        <child>
                                            <object class="GtkCellRendererText" id="cellrender_state"/>
                                            <attributes>
                                                <attribute name="text">0</attribute>
                                            </attributes>
                                        </child>
                                    </object>
                                </child>
                            </object>
                        </child>
                    </object>
                    <packing>
                        <property name="expand">True</property>
                        <property name="fill">True</property>
                        <property name="position">0</property>
                    </packing>
                </child>
            </object>
        </child>
    </object>
</interface>