Now the gui starts up

gui.py

@@ -1,11 +1,14 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-from gi.repository import Gtk, Gio
 
+# Python imports
 import os.path
 import sys
 
+# Gtk and Gobject
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk, Gio
+
 # Internationalization support
 import gettext
 import locale

requirements.txt

@@ -6,6 +6,8 @@ feedparser==5.2.1
 idna==2.10
 importlib-metadata==1.7.0
 Pillow==7.2.0
+pycairo==1.19.1
+PyGObject==3.38.0
 pyserial==3.4
 python-escpos==2.2.0
 pyusb==1.0.2

res/smallprint.gtkbuilder

@@ -176,7 +176,20 @@
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <child>
-              <placeholder/>
+              <object class="GtkBox">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="orientation">vertical</property>
+                <child>
+                  <placeholder/>
+                </child>
+                <child>
+                  <placeholder/>
+                </child>
+                <child>
+                  <placeholder/>
+                </child>
+              </object>
             </child>
             <child type="tab">
               <object class="GtkLabel">
@@ -189,7 +202,23 @@
               </packing>
             </child>
             <child>
-              <placeholder/>
+              <object class="GtkBox">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="orientation">vertical</property>
+                <child>
+                  <placeholder/>
+                </child>
+                <child>
+                  <placeholder/>
+                </child>
+                <child>
+                  <placeholder/>
+                </child>
+              </object>
+              <packing>
+                <property name="position">1</property>
+              </packing>
             </child>
             <child type="tab">
               <object class="GtkLabel">
@@ -203,7 +232,23 @@
               </packing>
             </child>
             <child>
-              <placeholder/>
+              <object class="GtkBox">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="orientation">vertical</property>
+                <child>
+                  <placeholder/>
+                </child>
+                <child>
+                  <placeholder/>
+                </child>
+                <child>
+                  <placeholder/>
+                </child>
+              </object>
+              <packing>
+                <property name="position">2</property>
+              </packing>
             </child>
             <child type="tab">
               <object class="GtkLabel">