diff --git a/Gui test/gtk_test_2.py b/Gui test/gtk_test_2.py
new file mode 100644
index 0000000..4130fe1
--- /dev/null
+++ b/Gui test/gtk_test_2.py	
@@ -0,0 +1,82 @@
+#!/usr/bin/env python3.5
+
+# You are free to use and/or change this code for
+# your own needs.
+
+# Original code (c)2018 Jan Lerking
+# Program to convert C-header (*.h) files to nasm include files (*.inc),
+# for direct usage in assembly programming using nasm/yasm.
+
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+
+class FileChooserWindow(Gtk.Window):
+
+    def __init__(self):
+        Gtk.Window.__init__(self, title="FileChooser Example")
+
+        box = Gtk.Box(spacing=6)
+        self.add(box)
+
+        button1 = Gtk.Button("Choose File")
+        button1.connect("clicked", self.on_file_clicked)
+        box.add(button1)
+
+        button2 = Gtk.Button("Choose Folder")
+        button2.connect("clicked", self.on_folder_clicked)
+        box.add(button2)
+
+    def on_file_clicked(self, widget):
+        dialog = Gtk.FileChooserDialog("Please choose a file", self,
+            Gtk.FileChooserAction.OPEN,
+            (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
+             Gtk.STOCK_OPEN, Gtk.ResponseType.OK))
+
+        self.add_filters(dialog)
+
+        response = dialog.run()
+        if response == Gtk.ResponseType.OK:
+            print("Open clicked")
+            print("File selected: " + dialog.get_filename())
+        elif response == Gtk.ResponseType.CANCEL:
+            print("Cancel clicked")
+
+        dialog.destroy()
+
+    def add_filters(self, dialog):
+        filter_text = Gtk.FileFilter()
+        filter_text.set_name("Text files")
+        filter_text.add_mime_type("text/plain")
+        dialog.add_filter(filter_text)
+
+        filter_py = Gtk.FileFilter()
+        filter_py.set_name("Python files")
+        filter_py.add_mime_type("text/x-python")
+        dialog.add_filter(filter_py)
+
+        filter_any = Gtk.FileFilter()
+        filter_any.set_name("Any files")
+        filter_any.add_pattern("*")
+        dialog.add_filter(filter_any)
+
+    def on_folder_clicked(self, widget):
+        dialog = Gtk.FileChooserDialog("Please choose a folder", self,
+            Gtk.FileChooserAction.SELECT_FOLDER,
+            (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
+             "Select", Gtk.ResponseType.OK))
+        dialog.set_default_size(800, 400)
+
+        response = dialog.run()
+        if response == Gtk.ResponseType.OK:
+            print("Select clicked")
+            print("Folder selected: " + dialog.get_filename())
+        elif response == Gtk.ResponseType.CANCEL:
+            print("Cancel clicked")
+
+        dialog.destroy()
+
+win = FileChooserWindow()
+win.connect("delete-event", Gtk.main_quit)
+win.show_all()
+Gtk.main()
\ No newline at end of file
diff --git a/Gui test/gtk_test_3.py b/Gui test/gtk_test_3.py
new file mode 100644
index 0000000..40c0015
--- /dev/null
+++ b/Gui test/gtk_test_3.py	
@@ -0,0 +1,80 @@
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+import time
+from multiprocessing import Process, Value, Lock, Pool
+
+class Counter(object):
+    def __init__(self, initval=0.0):
+        self.val = Value('d', initval)
+        self.lock = Lock()
+
+    def increment(self):
+        with self.lock:
+            self.val.value += 1/2542
+            print(self.val.value)
+
+    def value(self):
+        with self.lock:
+            return self.val.value
+
+class MyWindow(Gtk.Window):
+
+    def __init__(self):
+        Gtk.Window.__init__(self, title = 'Hello World')
+
+        #self.val = 0
+
+        self.box = Gtk.Box(spacing=6)
+        self.add(self.box)
+
+        self.button1 = Gtk.Button(label = 'Hello')
+        self.button1.connect('clicked', self.on_button1_clicked)
+        self.box.pack_start(self.button1, True, True, 0)
+
+        self.button2 = Gtk.Button(label = 'Goodbye')
+        self.button2.connect('clicked', self.on_button2_clicked)
+        self.box.pack_start(self.button2, True, True, 0)
+
+        self.pbar = Gtk.ProgressBar()
+        self.pbar.set_fraction(0.0)
+        self.box.pack_start(self.pbar, True, True, 0)
+
+    def on_button1_clicked(self, widget):
+        print('Hello')
+        #procs = [Process(target=self.func, args=(counter,)) for i in range(10)]
+
+        #for p in procs: p.start()
+        #for p in procs: p.join()
+        p = Pool(2)
+        p.map(self.func, range(2542))
+        print (counter.value())
+
+        #while counter.val.value <10:
+            #self.update_pbar(self.pbar)
+        print('Goodbye')
+        Gtk.main_quit()
+
+    def on_button2_clicked(self, widget):
+        print('Goodbye')
+        Gtk.main_quit()
+
+    def update_pbar(self, widget, value):
+        #self.val += 0.1
+        self.pbar.set_fraction(value)
+        #time.sleep(0.5)
+        while Gtk.events_pending():
+            Gtk.main_iteration()
+        
+    def func(self, data):
+        #for i in range(2542):
+        time.sleep(0.01)
+        counter.increment()
+        #while counter.value() <1:
+            #self.update_pbar(self.pbar, counter.value())
+
+counter = Counter(0.0)
+win = MyWindow()
+win.connect('delete-event', Gtk.main_quit)
+win.show_all()
+Gtk.main()
diff --git a/Gui test/gtk_test_4.py b/Gui test/gtk_test_4.py
new file mode 100644
index 0000000..08672c9
--- /dev/null
+++ b/Gui test/gtk_test_4.py	
@@ -0,0 +1,118 @@
+import gobject
+import pygtk
+pygtk.require('2.0')
+import gtk
+import multiprocessing
+import threading
+import time
+
+gtk.gdk.threads_init()
+
+class Listener(gobject.GObject):
+    __gsignals__ = {
+        'updated' : (gobject.SIGNAL_RUN_LAST,
+                     gobject.TYPE_NONE,
+                     (gobject.TYPE_FLOAT, gobject.TYPE_STRING)),
+        'finished': (gobject.SIGNAL_RUN_LAST,
+                     gobject.TYPE_NONE,
+                     ())
+    }
+
+    def __init__(self, queue):
+        gobject.GObject.__init__(self)
+        self.queue = queue
+
+    def go(self):
+        print("Listener has started")
+        while True:
+            # Listen for results on the queue and process them accordingly                            
+            data = self.queue.get()
+            # Check if finished                                                                       
+            if data[1]=="finished":
+                print("Listener is finishing.")
+                self.emit("finished")
+                return
+            else:
+                self.emit('updated', data[0], data[1])
+
+gobject.type_register(Listener)
+
+class Worker():
+    def __init__(self, queue):
+        self.queue = queue
+
+    def go(self):
+        print("The worker has started doing some work (counting from 0 to 9)")
+        for i in range(10):
+            proportion = (float(i+1))/10
+            self.queue.put((proportion, "working..."))
+            time.sleep(0.5)
+        self.queue.put((1.0, "finished"))
+        print("The worker has finished.")
+
+
+class Interface:
+    def __init__(self):
+        self.process = None
+        self.progress = gtk.ProgressBar()
+        button = gtk.Button("Go!")
+        button.connect("clicked", self.go)
+        vbox = gtk.VBox(spacing=5)
+        vbox.pack_start(self.progress)
+        vbox.pack_start(button)
+        vbox.show_all()
+        self.frame = vbox
+
+    def main(self):
+        window = gtk.Window(gtk.WINDOW_TOPLEVEL)
+        window.set_border_width(10)
+        window.add(self.frame)
+        window.show()
+        window.connect("destroy", self.destroy)
+
+        gtk.main()
+
+    def destroy(self, widget, data=None):
+        gtk.main_quit()
+
+
+    def callbackDisplay(self, obj, fraction, text, data=None):
+        self.progress.set_fraction(fraction)
+        self.progress.set_text(text)
+
+    def callbackFinished(self, obj, data=None):
+        if self.process==None:
+            raise RuntimeError("No worker process started")
+        print("all done; joining worker process")
+        self.process.join()
+        self.process = None
+
+        self.progress.set_fraction(1.0)
+        self.progress.set_text("done")
+
+    def go(self, widget, data=None):
+        if self.process!=None:
+            return
+
+        print("Creating shared Queue")
+        queue = multiprocessing.Queue()
+
+        print("Creating Worker")
+        worker = Worker(queue)
+
+        print("Creating Listener")
+        listener = Listener(queue)
+        listener.connect("updated",self.callbackDisplay)
+        listener.connect("finished",self.callbackFinished)
+
+        print("Starting Worker")
+        self.process = multiprocessing.Process(target=worker.go, args=())
+        self.process.start()
+
+        print("Starting Listener")
+        thread = threading.Thread(target=listener.go, args=())
+        thread.start()
+
+if __name__ == '__main__':
+    gui = Interface()
+    gui.main()
\ No newline at end of file
diff --git a/Gui test/gtk_test_5.py b/Gui test/gtk_test_5.py
new file mode 100644
index 0000000..044ed36
--- /dev/null
+++ b/Gui test/gtk_test_5.py	
@@ -0,0 +1,166 @@
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk, GObject as gobject
+import time
+from multiprocessing import Process, Value, Lock, Pool, Queue
+import threading
+
+gobject.threads_init()
+
+class Listener(gobject.GObject):
+    __gsignals__ = {
+        'updated' : (gobject.SIGNAL_RUN_LAST,
+                     gobject.TYPE_NONE,
+                     (gobject.TYPE_FLOAT, gobject.TYPE_STRING)),
+        'finished': (gobject.SIGNAL_RUN_LAST,
+                     gobject.TYPE_NONE,
+                     ())
+    }
+
+    def __init__(self, queue):
+        gobject.GObject.__init__(self)
+        self.queue = queue
+
+    def go(self):
+        print("Listener has started")
+        while True:
+            # Listen for results on the queue and process them accordingly                            
+            data = self.queue.get()
+            # Check if finished                                                                       
+            if data[1]=="finished":
+                print("Listener is finishing.")
+                self.emit("finished")
+                return
+            else:
+                self.emit('updated', data[0], data[1])
+
+gobject.type_register(Listener)
+
+class Worker():
+    def __init__(self, queue):
+        self.queue = queue
+
+    def go(self):
+        print("The worker has started doing some work (counting from 0 to 9)")
+        for i in range(2542):
+            proportion = (float(i+1))/2542
+            self.queue.put((proportion, "working..."))
+            time.sleep(0.01)
+        self.queue.put((1.0, "finished"))
+        print("The worker has finished.")
+
+class Counter(object):
+    def __init__(self, initval=0.0):
+        self.val = Value('d', initval)
+        self.lock = Lock()
+
+    def increment(self):
+        with self.lock:
+            self.val.value += 1/2542
+            print(self.val.value)
+
+    def value(self):
+        with self.lock:
+            return self.val.value
+
+class MyWindow(Gtk.Window):
+
+    def __init__(self):
+        Gtk.Window.__init__(self, title = 'Hello World')
+
+        #self.val = 0
+        self.process = None
+
+        self.box = Gtk.Box(spacing=6)
+        self.add(self.box)
+
+        self.button1 = Gtk.Button(label = 'Hello')
+        self.button1.connect('clicked', self.go)
+        self.box.pack_start(self.button1, True, True, 0)
+
+        self.button2 = Gtk.Button(label = 'Goodbye')
+        self.button2.connect('clicked', self.on_button2_clicked)
+        self.box.pack_start(self.button2, True, True, 0)
+
+        self.pbar = Gtk.ProgressBar()
+        self.pbar.set_fraction(0.0)
+        self.box.pack_start(self.pbar, True, True, 0)
+
+    def callbackDisplay(self, obj, fraction, text, data=None):
+        self.pbar.set_fraction(fraction)
+        self.pbar.set_text(text)
+
+    def callbackFinished(self, obj, data=None):
+        if self.process==None:
+            raise RuntimeError("No worker process started")
+        print("all done; joining worker process")
+        self.process.join()
+        self.process = None
+
+        self.pbar.set_fraction(1.0)
+        self.pbar.set_text("done")
+
+        print('Goodbye')
+        Gtk.main_quit()
+
+    def go(self, widget, data=None):
+        if self.process!=None:
+            return
+
+        print("Creating shared Queue")
+        queue = Queue()
+
+        print("Creating Worker")
+        worker = Worker(queue)
+
+        print("Creating Listener")
+        listener = Listener(queue)
+        listener.connect("updated",self.callbackDisplay)
+        listener.connect("finished",self.callbackFinished)
+
+        print("Starting Worker")
+        self.process = Process(target=worker.go, args=())
+        self.process.start()
+
+        print("Starting Listener")
+        thread = threading.Thread(target=listener.go, args=())
+        thread.start()
+
+    #def on_button1_clicked(self, widget):
+        #print('Hello')
+        #procs = [Process(target=self.func, args=(counter,)) for i in range(10)]
+
+        #for p in procs: p.start()
+        #for p in procs: p.join()
+        #p = Pool(2)
+        #p.map(self.func, range(2542))
+        #print (counter.value())
+
+        #while counter.val.value <10:
+            #self.update_pbar(self.pbar)
+        #print('Goodbye')
+        #Gtk.main_quit()
+
+    def on_button2_clicked(self, widget):
+        print('Goodbye')
+        Gtk.main_quit()
+
+    #def update_pbar(self, widget, value):
+        #self.val += 0.1
+        #self.pbar.set_fraction(value)
+        #time.sleep(0.5)
+        #while Gtk.events_pending():
+            #Gtk.main_iteration()
+        
+    #def func(self, data):
+        #for i in range(2542):
+        #time.sleep(0.01)
+        #counter.increment()
+        #while counter.value() <1:
+            #self.update_pbar(self.pbar, counter.value())
+
+#counter = Counter(0.0)
+win = MyWindow()
+win.connect('delete-event', Gtk.main_quit)
+win.show_all()
+Gtk.main()
diff --git a/Gui test/h2inc (copy).xml b/Gui test/h2inc (copy).xml
new file mode 100644
index 0000000..4702fd7
--- /dev/null
+++ b/Gui test/h2inc (copy).xml	
@@ -0,0 +1,393 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.18.3 -->
+<interface>
+  <requires lib="gtk+" version="3.12"/>
+  <object class="GtkFileChooserDialog" id="filechooserdialog1">
+    <property name="can_focus">False</property>
+    <property name="type_hint">normal</property>
+    <property name="action">select-folder</property>
+    <child internal-child="vbox">
+      <object class="GtkBox" id="filechooserdialog-vbox1">
+        <property name="can_focus">False</property>
+        <property name="orientation">vertical</property>
+        <property name="spacing">2</property>
+        <child internal-child="action_area">
+          <object class="GtkButtonBox" id="filechooserdialog-action_area1">
+            <property name="can_focus">False</property>
+            <property name="layout_style">end</property>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">False</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+        <child>
+          <placeholder/>
+        </child>
+      </object>
+    </child>
+  </object>
+  <object class="GtkWindow" id="window1">
+    <property name="can_focus">False</property>
+    <property name="margin_left">5</property>
+    <property name="margin_right">5</property>
+    <property name="margin_top">5</property>
+    <property name="margin_bottom">5</property>
+    <child>
+      <object class="GtkGrid" id="grid1">
+        <property name="visible">True</property>
+        <property name="can_focus">False</property>
+        <child>
+          <object class="GtkFrame" id="sourceframe">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="label_xalign">0</property>
+            <property name="shadow_type">etched-out</property>
+            <child>
+              <object class="GtkAlignment" id="alignment1">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="left_padding">12</property>
+                <child>
+                  <object class="GtkGrid" id="grid2">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <child>
+                      <object class="GtkLabel" id="label2">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="halign">end</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="hexpand">True</property>
+                        <property name="label" translatable="yes">Source:</property>
+                        <property name="justify">right</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">0</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkEntry" id="entry1">
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
+                        <property name="margin_left">5</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="text" translatable="yes">Select source directory!</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">2</property>
+                        <property name="top_attach">0</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkButton" id="button1">
+                        <property name="label" translatable="yes">Source directory...</property>
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">True</property>
+                        <property name="halign">start</property>
+                        <property name="margin_left">5</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">4</property>
+                        <property name="top_attach">0</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkLabel" id="label3">
+                        <property name="visible">True</property>
+                        <property name="sensitive">False</property>
+                        <property name="can_focus">False</property>
+                        <property name="halign">end</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="hexpand">True</property>
+                        <property name="label" translatable="yes">Destination:</property>
+                        <property name="justify">right</property>
+                        <property name="ellipsize">start</property>
+                        <property name="angle">2.2351741811588166e-10</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">1</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkEntry" id="entry2">
+                        <property name="visible">True</property>
+                        <property name="sensitive">False</property>
+                        <property name="can_focus">True</property>
+                        <property name="margin_left">5</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="text" translatable="yes">Select destination directory!</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">2</property>
+                        <property name="top_attach">1</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkButton" id="button2">
+                        <property name="label" translatable="yes">Destination directory...</property>
+                        <property name="visible">True</property>
+                        <property name="sensitive">False</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">True</property>
+                        <property name="halign">start</property>
+                        <property name="margin_left">5</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">4</property>
+                        <property name="top_attach">1</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkCheckButton" id="checkbutton1">
+                        <property name="label" translatable="yes">Create "include" folder if it does not exist.</property>
+                        <property name="visible">True</property>
+                        <property name="sensitive">False</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">False</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="xalign">0</property>
+                        <property name="draw_indicator">True</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">2</property>
+                        <property name="width">6</property>
+                      </packing>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child type="label">
+              <object class="GtkLabel" id="label1">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label" translatable="yes">Select folders</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">0</property>
+            <property name="top_attach">0</property>
+            <property name="width">5</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkFrame" id="frame1">
+            <property name="visible">True</property>
+            <property name="sensitive">False</property>
+            <property name="can_focus">False</property>
+            <property name="margin_top">5</property>
+            <property name="margin_bottom">5</property>
+            <property name="label_xalign">0</property>
+            <property name="shadow_type">etched-out</property>
+            <child>
+              <object class="GtkAlignment" id="alignment2">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="left_padding">12</property>
+                <child>
+                  <object class="GtkGrid" id="grid3">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <child>
+                      <object class="GtkFrame" id="frame2">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="hexpand">True</property>
+                        <property name="label_xalign">0</property>
+                        <property name="shadow_type">etched-out</property>
+                        <child>
+                          <object class="GtkAlignment" id="alignment3">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="left_padding">12</property>
+                            <child>
+                              <object class="GtkBox" id="box1">
+                                <property name="visible">True</property>
+                                <property name="can_focus">False</property>
+                                <property name="orientation">vertical</property>
+                                <child>
+                                  <object class="GtkLabel" id="label6">
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">False</property>
+                                    <property name="halign">start</property>
+                                    <property name="margin_top">5</property>
+                                    <property name="margin_bottom">5</property>
+                                    <property name="hexpand">True</property>
+                                    <property name="label" translatable="yes">Number of folders: 0</property>
+                                  </object>
+                                  <packing>
+                                    <property name="expand">False</property>
+                                    <property name="fill">True</property>
+                                    <property name="position">0</property>
+                                  </packing>
+                                </child>
+                                <child>
+                                  <object class="GtkLabel" id="label7">
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">False</property>
+                                    <property name="halign">start</property>
+                                    <property name="margin_top">5</property>
+                                    <property name="margin_bottom">5</property>
+                                    <property name="label" translatable="yes">Number of files: 0</property>
+                                  </object>
+                                  <packing>
+                                    <property name="expand">False</property>
+                                    <property name="fill">True</property>
+                                    <property name="position">1</property>
+                                  </packing>
+                                </child>
+                              </object>
+                            </child>
+                          </object>
+                        </child>
+                        <child type="label">
+                          <object class="GtkLabel" id="label5">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="label" translatable="yes">Source information</property>
+                          </object>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">0</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkButton" id="button3">
+                        <property name="label" translatable="yes">Translate!</property>
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">True</property>
+                        <property name="halign">start</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">1</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkFrame" id="frame3">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="label_xalign">0</property>
+                        <property name="shadow_type">etched-out</property>
+                        <child>
+                          <object class="GtkAlignment" id="alignment4">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="left_padding">12</property>
+                            <child>
+                              <object class="GtkBox" id="box2">
+                                <property name="visible">True</property>
+                                <property name="can_focus">False</property>
+                                <property name="orientation">vertical</property>
+                                <child>
+                                  <object class="GtkLabel" id="label9">
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">False</property>
+                                    <property name="halign">start</property>
+                                    <property name="margin_top">5</property>
+                                    <property name="margin_bottom">5</property>
+                                    <property name="label" translatable="yes">Total progress:</property>
+                                  </object>
+                                  <packing>
+                                    <property name="expand">False</property>
+                                    <property name="fill">True</property>
+                                    <property name="position">0</property>
+                                  </packing>
+                                </child>
+                                <child>
+                                  <object class="GtkProgressBar" id="progressbar1">
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">False</property>
+                                    <property name="margin_right">5</property>
+                                    <property name="margin_top">5</property>
+                                    <property name="margin_bottom">5</property>
+                                  </object>
+                                  <packing>
+                                    <property name="expand">False</property>
+                                    <property name="fill">True</property>
+                                    <property name="position">1</property>
+                                  </packing>
+                                </child>
+                              </object>
+                            </child>
+                          </object>
+                        </child>
+                        <child type="label">
+                          <object class="GtkLabel" id="label8">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="label" translatable="yes">Progress</property>
+                          </object>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">2</property>
+                      </packing>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child type="label">
+              <object class="GtkLabel" id="label4">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label" translatable="yes">Translation</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">0</property>
+            <property name="top_attach">1</property>
+            <property name="width">5</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>
diff --git a/Gui test/h2inc.glade~ b/Gui test/h2inc.glade~
new file mode 100644
index 0000000..ad6a6e9
--- /dev/null
+++ b/Gui test/h2inc.glade~	
@@ -0,0 +1,367 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.18.3 -->
+<interface>
+  <requires lib="gtk+" version="3.12"/>
+  <object class="GtkWindow" id="window1">
+    <property name="can_focus">False</property>
+    <property name="margin_left">5</property>
+    <property name="margin_right">5</property>
+    <property name="margin_top">5</property>
+    <property name="margin_bottom">5</property>
+    <child>
+      <object class="GtkGrid" id="grid1">
+        <property name="visible">True</property>
+        <property name="can_focus">False</property>
+        <property name="margin_left">5</property>
+        <property name="margin_right">5</property>
+        <property name="margin_top">5</property>
+        <property name="margin_bottom">5</property>
+        <property name="hexpand">True</property>
+        <property name="vexpand">True</property>
+        <child>
+          <object class="GtkFrame" id="sourceframe">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="label_xalign">0</property>
+            <property name="shadow_type">etched-out</property>
+            <child>
+              <object class="GtkAlignment" id="alignment1">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="left_padding">12</property>
+                <child>
+                  <object class="GtkGrid" id="grid2">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <child>
+                      <object class="GtkLabel" id="label2">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="halign">end</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="hexpand">True</property>
+                        <property name="label" translatable="yes">Source:</property>
+                        <property name="justify">right</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">0</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkEntry" id="entry1">
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
+                        <property name="margin_left">5</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="text" translatable="yes">Select source directory!</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">2</property>
+                        <property name="top_attach">0</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkButton" id="button1">
+                        <property name="label" translatable="yes">Source directory...</property>
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">True</property>
+                        <property name="halign">start</property>
+                        <property name="margin_left">5</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">4</property>
+                        <property name="top_attach">0</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkLabel" id="label3">
+                        <property name="visible">True</property>
+                        <property name="sensitive">False</property>
+                        <property name="can_focus">False</property>
+                        <property name="halign">end</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="hexpand">True</property>
+                        <property name="label" translatable="yes">Destination:</property>
+                        <property name="justify">right</property>
+                        <property name="ellipsize">start</property>
+                        <property name="angle">2.2351741811588166e-10</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">1</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkEntry" id="entry2">
+                        <property name="visible">True</property>
+                        <property name="sensitive">False</property>
+                        <property name="can_focus">True</property>
+                        <property name="margin_left">5</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="text" translatable="yes">Select destination directory!</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">2</property>
+                        <property name="top_attach">1</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkButton" id="button2">
+                        <property name="label" translatable="yes">Destination directory...</property>
+                        <property name="visible">True</property>
+                        <property name="sensitive">False</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">True</property>
+                        <property name="halign">start</property>
+                        <property name="margin_left">5</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">4</property>
+                        <property name="top_attach">1</property>
+                        <property name="width">2</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkCheckButton" id="checkbutton1">
+                        <property name="label" translatable="yes">Create "include" folder if it does not exist.</property>
+                        <property name="visible">True</property>
+                        <property name="sensitive">False</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">False</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="xalign">0</property>
+                        <property name="draw_indicator">True</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">2</property>
+                        <property name="width">6</property>
+                      </packing>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child type="label">
+              <object class="GtkLabel" id="label1">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label" translatable="yes">Select folders</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">0</property>
+            <property name="top_attach">0</property>
+            <property name="width">5</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkFrame" id="frame1">
+            <property name="visible">True</property>
+            <property name="sensitive">False</property>
+            <property name="can_focus">False</property>
+            <property name="margin_top">5</property>
+            <property name="margin_bottom">5</property>
+            <property name="label_xalign">0</property>
+            <property name="shadow_type">etched-out</property>
+            <child>
+              <object class="GtkAlignment" id="alignment2">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="left_padding">12</property>
+                <child>
+                  <object class="GtkGrid" id="grid3">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <child>
+                      <object class="GtkFrame" id="frame2">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="hexpand">True</property>
+                        <property name="label_xalign">0</property>
+                        <property name="shadow_type">etched-out</property>
+                        <child>
+                          <object class="GtkAlignment" id="alignment3">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="left_padding">12</property>
+                            <child>
+                              <object class="GtkBox" id="box1">
+                                <property name="visible">True</property>
+                                <property name="can_focus">False</property>
+                                <property name="orientation">vertical</property>
+                                <child>
+                                  <object class="GtkLabel" id="label6">
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">False</property>
+                                    <property name="halign">start</property>
+                                    <property name="margin_top">5</property>
+                                    <property name="margin_bottom">5</property>
+                                    <property name="hexpand">True</property>
+                                    <property name="label" translatable="yes">Number of folders: 0</property>
+                                  </object>
+                                  <packing>
+                                    <property name="expand">False</property>
+                                    <property name="fill">True</property>
+                                    <property name="position">0</property>
+                                  </packing>
+                                </child>
+                                <child>
+                                  <object class="GtkLabel" id="label7">
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">False</property>
+                                    <property name="halign">start</property>
+                                    <property name="margin_top">5</property>
+                                    <property name="margin_bottom">5</property>
+                                    <property name="label" translatable="yes">Number of files: 0</property>
+                                  </object>
+                                  <packing>
+                                    <property name="expand">False</property>
+                                    <property name="fill">True</property>
+                                    <property name="position">1</property>
+                                  </packing>
+                                </child>
+                              </object>
+                            </child>
+                          </object>
+                        </child>
+                        <child type="label">
+                          <object class="GtkLabel" id="label5">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="label" translatable="yes">Source information</property>
+                          </object>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">0</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkButton" id="button3">
+                        <property name="label" translatable="yes">Translate!</property>
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">True</property>
+                        <property name="halign">start</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">1</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkFrame" id="frame3">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="margin_right">5</property>
+                        <property name="margin_top">5</property>
+                        <property name="margin_bottom">5</property>
+                        <property name="label_xalign">0</property>
+                        <property name="shadow_type">etched-out</property>
+                        <child>
+                          <object class="GtkAlignment" id="alignment4">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="left_padding">12</property>
+                            <child>
+                              <object class="GtkBox" id="box2">
+                                <property name="visible">True</property>
+                                <property name="can_focus">False</property>
+                                <property name="orientation">vertical</property>
+                                <child>
+                                  <object class="GtkLabel" id="label9">
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">False</property>
+                                    <property name="halign">start</property>
+                                    <property name="margin_top">5</property>
+                                    <property name="margin_bottom">5</property>
+                                    <property name="label" translatable="yes">Total progress:</property>
+                                  </object>
+                                  <packing>
+                                    <property name="expand">False</property>
+                                    <property name="fill">True</property>
+                                    <property name="position">0</property>
+                                  </packing>
+                                </child>
+                                <child>
+                                  <object class="GtkProgressBar" id="progressbar1">
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">False</property>
+                                    <property name="margin_right">5</property>
+                                    <property name="margin_top">5</property>
+                                    <property name="margin_bottom">5</property>
+                                  </object>
+                                  <packing>
+                                    <property name="expand">False</property>
+                                    <property name="fill">True</property>
+                                    <property name="position">1</property>
+                                  </packing>
+                                </child>
+                              </object>
+                            </child>
+                          </object>
+                        </child>
+                        <child type="label">
+                          <object class="GtkLabel" id="label8">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="label" translatable="yes">Progress</property>
+                          </object>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="left_attach">0</property>
+                        <property name="top_attach">2</property>
+                      </packing>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child type="label">
+              <object class="GtkLabel" id="label4">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label" translatable="yes">Translation</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">0</property>
+            <property name="top_attach">1</property>
+            <property name="width">5</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>
diff --git a/Gui test/h2inc_gtk.py b/Gui test/h2inc_gtk.py
index 48bcd28..7f1c7d2 100644
--- a/Gui test/h2inc_gtk.py	
+++ b/Gui test/h2inc_gtk.py	
@@ -9,11 +9,58 @@
 
 import os
 import sys
-import multiprocessing as mp
 import io
 import gi
 gi.require_version('Gtk', '3.0')
-from gi.repository import Gtk, Gio, GdkPixbuf
+from gi.repository import Gtk, Gio, GObject as gobject
+import time
+from multiprocessing import Process, Value, Lock, Pool, Queue
+import threading
+
+gobject.threads_init()
+
+class Listener(gobject.GObject):
+    __gsignals__ = {
+        'updated' : (gobject.SIGNAL_RUN_LAST,
+                     gobject.TYPE_NONE,
+                     (gobject.TYPE_FLOAT, gobject.TYPE_STRING, gobject.TYPE_INT)),
+        'finished': (gobject.SIGNAL_RUN_LAST,
+                     gobject.TYPE_NONE,
+                     ())
+    }
+
+    def __init__(self, queue):
+        gobject.GObject.__init__(self)
+        self.queue = queue
+
+    def go(self):
+        print("Listener has started")
+        while True:
+            # Listen for results on the queue and process them accordingly                            
+            data = self.queue.get()
+            # Check if finished                                                                       
+            if data[1]=="finished":
+                print("Listener is finishing.")
+                self.emit("finished")
+                return
+            else:
+                self.emit('updated', data[0], data[1], data[2])
+
+gobject.type_register(Listener)
+
+class Worker():
+    def __init__(self, queue, filecnt, filelist):
+        self.queue = queue
+        self.filecnt = filecnt
+
+    def go(self):
+        print("The worker has started doing some work (counting from 0 to 9)")
+        for i in range(self.filecnt):
+            proportion = (float(i+1))/self.filecnt
+            self.queue.put((proportion, "working...", i))
+            process_file(filelist[i])
+        self.queue.put((1.0, "finished"))
+        print("The worker has finished.")
 
 tupline = []
 preproc = ()
@@ -22,8 +69,9 @@ folderlist = []
 cnt = 0
 srcdir = ''
 destdir = ''
-num_cores = mp.cpu_count()
+#num_cores = multiprocessing.cpu_count()
 fileindex = 0
+filecnt = 0
 
 def sourcedir_filecnt(sourcedir):
     ### Return the number of files, ending with '.h', in sourcedir - including subdirectories ###
@@ -110,12 +158,66 @@ def process_file(data):
     newfile.write(outfile)
     newfile.close()
 
-def async_process(num):
-    pool = mp.Pool(processes=num)
-    pool.map(process_file, filelist)
+class ExampleApp:
 
-class Handler:
+    global app
+    global destlabel
 
+    def __init__(self):
+        
+        self.filecnt = 0
+        self.fileindex = 0
+        self.process = None
+        self.app = Gtk.Application.new("org.h2inc", Gio.ApplicationFlags(0))
+        self.app.connect("activate", self.on_app_activate)
+        self.app.connect("shutdown", self.on_app_shutdown)
+        app = self.app
+
+    def on_app_activate(self, app):
+        builder = Gtk.Builder()
+        builder.add_from_file("h2inc.glade")
+        builder.connect_signals(self)
+
+        self.obj = builder.get_object
+        self.obj("window").set_application(app)
+        self.obj("window").set_wmclass("h2inc_gtk","h2inc_gtk")
+        self.obj("window").show_all()
+
+        button = Gtk.Button.new_from_stock(Gtk.STOCK_CANCEL)
+        button.set_property("can-default",True)
+        self.obj("filechooser_dialog").add_action_widget(button, Gtk.ResponseType.CANCEL)
+        button = Gtk.Button.new_from_stock(Gtk.STOCK_APPLY)
+        button.set_property("can-default",True)
+        self.obj("filechooser_dialog").add_action_widget(button, Gtk.ResponseType.OK)
+
+    def on_app_shutdown(self, app):
+        self.app.quit()
+
+    def run(self, argv):
+        self.app.run(argv)
+
+    def callbackDisplay(self, obj, fraction, text, index, data=None):
+        self.obj("progress_label").set_text("{} of {}".format(index+1, self.filecnt))
+        self.obj("progressbar").set_fraction(fraction)
+        self.obj("progressbar").set_text(text)
+
+    def callbackFinished(self, obj, data=None):
+        if self.process==None:
+            raise RuntimeError("No worker process started")
+        print("all done; joining worker process")
+        self.process.join()
+        self.process = None
+
+        self.obj("progressbar").set_fraction(1.0)
+        self.obj("progressbar").set_text("done")
+        self.obj("sourceframe").set_sensitive(True)
+        self.obj("translate_button").set_sensitive(True)
+        self.obj("destination_label").set_sensitive(True)
+        self.obj("destination_entry").set_sensitive(True)
+        self.obj("destination_button").set_sensitive(True)
+        self.obj("include_checkbutton").set_sensitive(True)
+        self.obj("translation_frame").set_sensitive(True)
+        
     def on_window_destroy(self,window):
         window.close()
 
@@ -130,17 +232,6 @@ class Handler:
             print("File selection: %s" % widget.get_filename())
         self.on_dialog_close(widget)
 
-    def on_filechooser_dialog_file_activated(self,widget):
-        self.on_filechooser_dialog_response(widget,-5)
-
-    def on_filechooser_dialog_update_preview(self,widget):
-        if widget.get_filename() != None and os.path.isfile(widget.get_filename()):
-            pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_scale(widget.get_filename(),200,200,True)
-            app.obj("preview").set_from_pixbuf(pixbuf)
-
-    def on_file_button_clicked(self,widget):
-        app.obj("filechooser_dialog").show_all()
-
     def on_source_button_clicked(self,widget):
 
         dialog = Gtk.FileChooserDialog("Select source directory!",
@@ -152,15 +243,15 @@ class Handler:
 
         response = dialog.run()
         if response == Gtk.ResponseType.OK:
-            filecnt = sourcedir_filecnt(dialog.get_filename())
-            if filecnt >0:
-                print(filecnt)
+            self.filecnt = sourcedir_filecnt(dialog.get_filename())
+            if self.filecnt >0:
+                print(self.filecnt)
                 app.obj("source_entry").set_text(dialog.get_filename())
                 app.obj("destination_label").set_sensitive(True)
                 app.obj("destination_entry").set_sensitive(True)
                 app.obj("destination_button").set_sensitive(True)
-                app.obj("numfiles_label").set_text(str(filecnt))
-                app.obj("progress_label").set_text("{} of {}".format(fileindex, filecnt))
+                app.obj("numfiles_label").set_text(str(self.filecnt))
+                app.obj("progress_label").set_text("{} of {}".format(fileindex, self.filecnt))
                 foldercnt = sourcedir_foldercnt(dialog.get_filename())
                 if foldercnt >0:
                     app.obj("numfolders_label").set_text(str(foldercnt))
@@ -192,51 +283,31 @@ class Handler:
 
         dialog.destroy()
 
-    def on_translate_button_clicked(self, widget):
+    def on_translate_button_clicked(self, widget, data=None):
         app.obj("sourceframe").set_sensitive(False)
         app.obj("translate_button").set_sensitive(False)
-        process_files()
-
-    def update_pbar(self, widget):
-        self.val += 1/filecnt
-        self.pbar.set_fraction(self.val)
-        while Gtk.events_pending():
-            Gtk.main_iteration()
-
-class ExampleApp:
-
-    global app
-    global destlabel
-
-    def __init__(self):
         
-        self.app = Gtk.Application.new("org.h2inc", Gio.ApplicationFlags(0))
-        self.app.connect("activate", self.on_app_activate)
-        self.app.connect("shutdown", self.on_app_shutdown)
-        app = self.app
+        if self.process!=None:
+            return
 
-    def on_app_activate(self, app):
-        builder = Gtk.Builder()
-        builder.add_from_file("h2inc.glade")
-        builder.connect_signals(Handler())
+        print("Creating shared Queue")
+        queue = Queue()
 
-        self.obj = builder.get_object
-        self.obj("window").set_application(app)
-        self.obj("window").set_wmclass("h2inc_gtk","h2inc_gtk")
-        self.obj("window").show_all()
+        print("Creating Worker")
+        worker = Worker(queue, self.filecnt, filelist)
 
-        button = Gtk.Button.new_from_stock(Gtk.STOCK_CANCEL)
-        button.set_property("can-default",True)
-        self.obj("filechooser_dialog").add_action_widget(button, Gtk.ResponseType.CANCEL)
-        button = Gtk.Button.new_from_stock(Gtk.STOCK_APPLY)
-        button.set_property("can-default",True)
-        self.obj("filechooser_dialog").add_action_widget(button, Gtk.ResponseType.OK)
+        print("Creating Listener")
+        listener = Listener(queue)
+        listener.connect("updated",self.callbackDisplay)
+        listener.connect("finished",self.callbackFinished)
 
-    def on_app_shutdown(self, app):
-        self.app.quit()
+        print("Starting Worker")
+        self.process = Process(target=worker.go, args=())
+        self.process.start()
 
-    def run(self, argv):
-        self.app.run(argv)
+        print("Starting Listener")
+        thread = threading.Thread(target=listener.go, args=())
+        thread.start()
 
 app = ExampleApp()
 app.run(sys.argv)
diff --git a/Multiprocessing test/mp_test_1.py b/Multiprocessing test/mp_test_1.py
new file mode 100644
index 0000000..00183ad
--- /dev/null
+++ b/Multiprocessing test/mp_test_1.py	
@@ -0,0 +1,18 @@
+from multiprocessing import Process
+import os
+
+def info(title):
+    print(title)
+    print('module name:', __name__)
+    print('parent process:', os.getppid())
+    print('process id:', os.getpid())
+
+def f(name):
+    info('function f')
+    print('hello', name)
+
+if __name__ == '__main__':
+    info('main line')
+    p = Process(target=f, args=('bob',))
+    p.start()
+    p.join()
\ No newline at end of file
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