diff --git a/src/gui/aboutdialog.py b/src/gui/aboutdialog.py
index c88a7ab72..0ef2b6262 100644
--- a/src/gui/aboutdialog.py
+++ b/src/gui/aboutdialog.py
@@ -44,6 +44,7 @@ except ImportError:
 # Gtk modules
 #
 #-------------------------------------------------------------------------
+from gi.repository import GObject
 from gi.repository import Gtk
 from gi.repository import GdkPixbuf
 
diff --git a/src/gui/configure.py b/src/gui/configure.py
index ed1e283a3..de1fabc3c 100644
--- a/src/gui/configure.py
+++ b/src/gui/configure.py
@@ -168,7 +168,7 @@ class ConfigureDialog(ManagedWindow):
         self.__config = configmanager
         ManagedWindow.__init__(self, uistate, [], configobj)
         self.set_window(
-            Gtk.Dialog(dialogtitle, flags=Gtk.DialogFlags.NO_SEPARATOR, 
+            Gtk.Dialog(dialogtitle, 
                        buttons=(Gtk.STOCK_CLOSE, Gtk.ResponseType.CLOSE)), 
                        None, dialogtitle, None)
         self.panel = Gtk.Notebook()
@@ -307,8 +307,8 @@ class ConfigureDialog(ManagedWindow):
         image.set_from_stock(Gtk.STOCK_OPEN, Gtk.IconSize.BUTTON)
         image.show()
         btn.add(image)
-        hbox.pack_start(entry, expand=True, fill=True)
-        hbox.pack_start(btn, expand=False, fill=False)
+        hbox.pack_start(entry, True, True, 0)
+        hbox.pack_start(btn, False, False, 0)
         table.attach(lwidget, 1, 2, index, index+1, yoptions=0, 
                      xoptions=Gtk.AttachOptions.FILL)
         table.attach(hbox, 2, 3, index, index+1, yoptions=0)
@@ -418,7 +418,7 @@ class ConfigureDialog(ManagedWindow):
             callback = self.update_spinner
         lwidget = BasicLabel("%s: " % label)
         adj = Gtk.Adjustment(config.get(constant), range[0], range[1], 1, 0, 0)
-        spinner = Gtk.SpinButton(adj)
+        spinner = Gtk.SpinButton(adjustment=adj, climb_rate=0.0, digits=0)
         spinner.connect('value-changed', callback, constant)
         table.attach(lwidget, 1, 2, index, index+1, yoptions=0, 
                      xoptions=Gtk.AttachOptions.FILL)
@@ -875,8 +875,8 @@ class GrampsPreferences(ConfigureDialog):
         hbox = Gtk.HBox()
         btn = Gtk.Button("%s..." % _('Edit') )
         btn.connect('clicked', self.cb_name_dialog)
-        hbox.pack_start(self.fmt_obox, expand=True, fill=True)
-        hbox.pack_start(btn, expand=False, fill=False)
+        hbox.pack_start(self.fmt_obox, True, True, 0)
+        hbox.pack_start(btn, False, False, 0)
         table.attach(lwidget, 0, 1, row, row+1, yoptions=0)
         table.attach(hbox,    1, 3, row, row+1, yoptions=0)
         row += 1
diff --git a/src/gui/ddtargets.py b/src/gui/ddtargets.py
index 6004ed099..4359a6eee 100644
--- a/src/gui/ddtargets.py
+++ b/src/gui/ddtargets.py
@@ -90,6 +90,13 @@ class _DdType:
         return Gtk.TargetEntry.new(self.drag_type, self.target_flags,
                                    self.app_id)
 
+    def target_data(self):
+        """
+        Return the target information as a list in the format required by
+        Gtk3 functions.
+        """
+        return [self.drag_type, self.target_flags, self.app_id]
+
 class _DdTargets(object):
     """A single class that manages all the drag and drop targets."""
     
diff --git a/src/gui/editors/displaytabs/addressmodel.py b/src/gui/editors/displaytabs/addressmodel.py
index 293fda5be..80906f11f 100644
--- a/src/gui/editors/displaytabs/addressmodel.py
+++ b/src/gui/editors/displaytabs/addressmodel.py
@@ -52,7 +52,7 @@ class AddressModel(Gtk.ListStore):
         """
         AddressModel derives from the ListStore, defining te items in the list
         """
-        GObject.GObject.__init__(self, str, str, str, str, str, str, object)
+        Gtk.ListStore.__init__(self, str, str, str, str, str, str, object)
         self.db = dbase
         for obj in obj_list:
             self.append(row=[
diff --git a/src/gui/editors/displaytabs/attrmodel.py b/src/gui/editors/displaytabs/attrmodel.py
index 152909bff..adeac16c7 100644
--- a/src/gui/editors/displaytabs/attrmodel.py
+++ b/src/gui/editors/displaytabs/attrmodel.py
@@ -42,7 +42,7 @@ from gi.repository import Gtk
 class AttrModel(Gtk.ListStore):
 
     def __init__(self, attr_list, db):
-        GObject.GObject.__init__(self, str, str, object)
+        Gtk.ListStore.__init__(self, str, str, object)
         self.db = db
         for attr in attr_list:
             self.append(row=[
diff --git a/src/gui/editors/displaytabs/backrefmodel.py b/src/gui/editors/displaytabs/backrefmodel.py
index 00a0ea5f7..474b6c201 100644
--- a/src/gui/editors/displaytabs/backrefmodel.py
+++ b/src/gui/editors/displaytabs/backrefmodel.py
@@ -49,7 +49,7 @@ class BackRefModel(Gtk.ListStore):
     dispstr = _('%(part1)s - %(part2)s')
 
     def __init__(self, sref_list, db):
-        GObject.GObject.__init__(self, str, str, str, str, str)
+        Gtk.ListStore.__init__(self, str, str, str, str, str)
         self.db = db
         self.sref_list = sref_list
         self.count = 0
diff --git a/src/gui/editors/displaytabs/childmodel.py b/src/gui/editors/displaytabs/childmodel.py
index fc10c852a..4e9646a0a 100644
--- a/src/gui/editors/displaytabs/childmodel.py
+++ b/src/gui/editors/displaytabs/childmodel.py
@@ -47,7 +47,7 @@ from gen.utils import get_birth_or_fallback, get_death_or_fallback
 class ChildModel(Gtk.ListStore):
 
     def __init__(self, child_ref_list, db):
-        GObject.GObject.__init__(self, int, str, str, str, str, str, 
+        Gtk.ListStore.__init__(self, int, str, str, str, str, str, 
                                str, str, str, str, str, str, str, object)
         self.db = db
         for index, child_ref in enumerate(child_ref_list):
diff --git a/src/gui/editors/displaytabs/citationrefmodel.py b/src/gui/editors/displaytabs/citationrefmodel.py
index e9fb4d2e8..04972bf75 100644
--- a/src/gui/editors/displaytabs/citationrefmodel.py
+++ b/src/gui/editors/displaytabs/citationrefmodel.py
@@ -36,7 +36,7 @@ from gi.repository import Gtk
 class CitationRefModel(Gtk.ListStore):
 
     def __init__(self, citation_list, db):
-        GObject.GObject.__init__(self, str, str, str, str, object)
+        Gtk.ListStore.__init__(self, str, str, str, str, object)
         self.db = db
         for handle in citation_list:
             citation = self.db.get_citation_from_handle(handle) 
diff --git a/src/gui/editors/displaytabs/datamodel.py b/src/gui/editors/displaytabs/datamodel.py
index 30f355894..929ca2420 100644
--- a/src/gui/editors/displaytabs/datamodel.py
+++ b/src/gui/editors/displaytabs/datamodel.py
@@ -42,7 +42,7 @@ from gi.repository import Gtk
 class DataModel(Gtk.ListStore):
 
     def __init__(self, attr_list, db):
-        GObject.GObject.__init__(self, str, str)
+        Gtk.ListStore.__init__(self, str, str)
         self.db = db
 
         for key,value in attr_list.items():
diff --git a/src/gui/editors/displaytabs/embeddedlist.py b/src/gui/editors/displaytabs/embeddedlist.py
index 83e81c079..09330d942 100644
--- a/src/gui/editors/displaytabs/embeddedlist.py
+++ b/src/gui/editors/displaytabs/embeddedlist.py
@@ -176,14 +176,15 @@ class EmbeddedList(ButtonTab):
         """
 
         if self._DND_EXTRA:
-            dnd_types = [ self._DND_TYPE.target(), self._DND_EXTRA.target() ]
+            dnd_types = [self._DND_TYPE.target_data(), 
+                         self._DND_EXTRA.target_data()]
         else:
-            dnd_types = [ self._DND_TYPE.target() ]
+            dnd_types = [self._DND_TYPE.target_data()]
         
         self.tree.enable_model_drag_dest(dnd_types,
                                          Gdk.DragAction.COPY)
         self.tree.enable_model_drag_source(Gdk.ModifierType.BUTTON1_MASK,
-                                  [self._DND_TYPE.target()],
+                                  [self._DND_TYPE.target_data()],
                                   Gdk.DragAction.COPY)
         self.tree.connect('drag_data_get', self.drag_data_get)
         if not self.dbstate.db.readonly:
diff --git a/src/gui/editors/displaytabs/gallerytab.py b/src/gui/editors/displaytabs/gallerytab.py
index ea4cd2a03..888c1bf52 100644
--- a/src/gui/editors/displaytabs/gallerytab.py
+++ b/src/gui/editors/displaytabs/gallerytab.py
@@ -35,6 +35,8 @@ import urlparse
 # GTK libraries
 #
 #-------------------------------------------------------------------------
+from gi.repository import Gdk
+from gi.repository import GdkPixbuf
 from gi.repository import Gtk
 from gi.repository import Pango
 import os
@@ -197,8 +199,8 @@ class GalleryTab(ButtonTab, DbGUIElement):
         text_renderer.set_property('wrap-mode', Pango.WrapMode.WORD_CHAR)
         text_renderer.set_property('wrap-width', const.THUMBSCALE)
         text_renderer.set_property('alignment', Pango.Alignment.CENTER)
-        self.iconlist.pack_end(text_renderer)
-        self.iconlist.set_attributes(text_renderer, text=1)
+        self.iconlist.pack_end(text_renderer, True)
+        self.iconlist.add_attribute(text_renderer, "text", 1)
         
         # set basic properties of the icon view
         self.iconlist.set_margin(padding)
@@ -218,7 +220,7 @@ class GalleryTab(ButtonTab, DbGUIElement):
         
         # put everything together
         scroll.add(self.iconlist)
-        self.pack_end(scroll, True)
+        self.pack_end(scroll, True, True, 0)
 
     def _update_internal_list(self, *obj):
         newlist = []
diff --git a/src/gui/editors/displaytabs/ldsmodel.py b/src/gui/editors/displaytabs/ldsmodel.py
index c9ea2441e..7f85f88bd 100644
--- a/src/gui/editors/displaytabs/ldsmodel.py
+++ b/src/gui/editors/displaytabs/ldsmodel.py
@@ -51,7 +51,7 @@ class LdsModel(Gtk.ListStore):
     _HANDLE_COL = 5
 
     def __init__(self, lds_list, db):
-        GObject.GObject.__init__(self, str, str, str, str, str, object)
+        Gtk.ListStore.__init__(self, str, str, str, str, str, object)
 
         self.db = db
         for lds_ord in lds_list:
diff --git a/src/gui/editors/displaytabs/locationmodel.py b/src/gui/editors/displaytabs/locationmodel.py
index 99a411e8b..db687b61b 100644
--- a/src/gui/editors/displaytabs/locationmodel.py
+++ b/src/gui/editors/displaytabs/locationmodel.py
@@ -42,7 +42,7 @@ from gi.repository import Gtk
 class LocationModel(Gtk.ListStore):
 
     def __init__(self, obj_list, db):
-        GObject.GObject.__init__(self, str, str, str, str, str, str, object)
+        Gtk.ListStore.__init__(self, str, str, str, str, str, str, object)
         self.db = db
         for obj in obj_list:
             self.append(row=[obj.street, obj.locality, obj.city, obj.county, 
diff --git a/src/gui/editors/displaytabs/notemodel.py b/src/gui/editors/displaytabs/notemodel.py
index 374395f60..bae78c9a3 100644
--- a/src/gui/editors/displaytabs/notemodel.py
+++ b/src/gui/editors/displaytabs/notemodel.py
@@ -35,7 +35,7 @@ from gi.repository import Gtk
 class NoteModel(Gtk.ListStore):
 
     def __init__(self, note_list, db):
-        GObject.GObject.__init__(self, str, str, object)
+        Gtk.ListStore.__init__(self, str, str, object)
         self.db = db
         for handle in note_list:
             note = self.db.get_note_from_handle(handle)
diff --git a/src/gui/editors/displaytabs/personrefmodel.py b/src/gui/editors/displaytabs/personrefmodel.py
index ce475dbeb..99cc1b0ca 100644
--- a/src/gui/editors/displaytabs/personrefmodel.py
+++ b/src/gui/editors/displaytabs/personrefmodel.py
@@ -42,7 +42,7 @@ from gen.display.name import displayer as name_displayer
 class PersonRefModel(Gtk.ListStore):
 
     def __init__(self, obj_list, db):
-        GObject.GObject.__init__(self, str, str, str, object)
+        Gtk.ListStore.__init__(self, str, str, str, object)
         self.db = db
         for obj in obj_list:
             p = self.db.get_person_from_handle(obj.ref)
diff --git a/src/gui/editors/displaytabs/reporefmodel.py b/src/gui/editors/displaytabs/reporefmodel.py
index 9ee55873f..0a3bcf4a9 100644
--- a/src/gui/editors/displaytabs/reporefmodel.py
+++ b/src/gui/editors/displaytabs/reporefmodel.py
@@ -42,7 +42,7 @@ from gi.repository import Gtk
 class RepoRefModel(Gtk.ListStore):
 
     def __init__(self, ref_list, db):
-        GObject.GObject.__init__(self, str, str, str, str, object)
+        Gtk.ListStore.__init__(self, str, str, str, str, object)
         self.db = db
         for ref in ref_list:
             repo = self.db.get_repository_from_handle(ref.ref)
diff --git a/src/gui/editors/displaytabs/surnamemodel.py b/src/gui/editors/displaytabs/surnamemodel.py
index b54ad9b98..ff1a55b54 100644
--- a/src/gui/editors/displaytabs/surnamemodel.py
+++ b/src/gui/editors/displaytabs/surnamemodel.py
@@ -45,7 +45,7 @@ class SurnameModel(Gtk.ListStore):
 
     def __init__(self, surn_list, db):
         #setup model for the treeview
-        GObject.GObject.__init__(self, str, str, str, str, 
+        Gtk.ListStore.__init__(self, str, str, str, str, 
                                bool, object)
         for surn in surn_list:
             # fill the liststore
diff --git a/src/gui/editors/displaytabs/webmodel.py b/src/gui/editors/displaytabs/webmodel.py
index 7f80d1c1e..cf11a26fa 100644
--- a/src/gui/editors/displaytabs/webmodel.py
+++ b/src/gui/editors/displaytabs/webmodel.py
@@ -42,7 +42,7 @@ class WebModel(Gtk.ListStore):
     """
     def __init__(self, obj_list, dbase):
 
-        GObject.GObject.__init__(self, str, str, str, object)
+        Gtk.ListStore.__init__(self, str, str, str, object)
         self.db = dbase
         for obj in obj_list:
             self.append(row=[str(obj.type), obj.path, obj.desc, obj])
diff --git a/src/gui/editors/editevent.py b/src/gui/editors/editevent.py
index 5104f6930..9487895de 100644
--- a/src/gui/editors/editevent.py
+++ b/src/gui/editors/editevent.py
@@ -210,7 +210,7 @@ class EditEvent(EditPrimary):
         self._setup_notebook_tabs(notebook)
         
         notebook.show_all()
-        self.top.get_object('vbox').pack_start(notebook, True)
+        self.top.get_object('vbox').pack_start(notebook, True, True, 0)
 
         self.track_ref_for_deletion("citation_list")
         self.track_ref_for_deletion("note_list")
diff --git a/src/gui/editors/editprimary.py b/src/gui/editors/editprimary.py
index 22c43bb31..785250426 100644
--- a/src/gui/editors/editprimary.py
+++ b/src/gui/editors/editprimary.py
@@ -147,7 +147,7 @@ class EditPrimary(ManagedWindow, DbGUIElement):
 
     def _add_tab(self, notebook, page):
         self.__tabs.append(page)
-        notebook.insert_page(page, page.get_tab_widget())
+        notebook.insert_page(page, page.get_tab_widget(), -1)
         page.label.set_use_underline(True)
         return page
 
diff --git a/src/gui/editors/editreference.py b/src/gui/editors/editreference.py
index 3bee635cf..c5ff55249 100644
--- a/src/gui/editors/editreference.py
+++ b/src/gui/editors/editreference.py
@@ -158,7 +158,7 @@ class EditReference(ManagedWindow, DbGUIElement):
 
     def _add_tab(self, notebook,page):
         self.__tabs.append(page)
-        notebook.insert_page(page, page.get_tab_widget())
+        notebook.insert_page(page, page.get_tab_widget(), -1)
         page.label.set_use_underline(True)
         return page
 
diff --git a/src/gui/editors/editsecondary.py b/src/gui/editors/editsecondary.py
index 73fb91e0b..e7310df07 100644
--- a/src/gui/editors/editsecondary.py
+++ b/src/gui/editors/editsecondary.py
@@ -102,7 +102,7 @@ class EditSecondary(ManagedWindow, DbGUIElement):
 
     def _add_tab(self, notebook,page):
         self.__tabs.append(page)
-        notebook.insert_page(page, page.get_tab_widget())
+        notebook.insert_page(page, page.get_tab_widget(), -1)
         page.label.set_use_underline(True)
         return page
 
diff --git a/src/gui/editors/objectentries.py b/src/gui/editors/objectentries.py
index 5f6792f71..f726c238f 100644
--- a/src/gui/editors/objectentries.py
+++ b/src/gui/editors/objectentries.py
@@ -36,6 +36,7 @@ _LOG = logging.getLogger(".objectentries")
 # GTK/Gnome modules
 #
 #-------------------------------------------------------------------------
+from gi.repository import Gdk
 from gi.repository import Gtk
 from gi.repository import Pango
 
@@ -133,7 +134,7 @@ class ObjEntry(object):
             self.label.set_use_markup(True)
         else:
             self.label.set_text(name)
-        self.label.set_ellipsize(Pango.ELLIPSIZE_END)
+        self.label.set_ellipsize(Pango.EllipsizeMode.END)
 
     def _init_dnd(self):
         """inheriting objects must set this
diff --git a/src/gui/filters/sidebar/_sidebarfilter.py b/src/gui/filters/sidebar/_sidebarfilter.py
index 534d4dceb..4cf52710f 100644
--- a/src/gui/filters/sidebar/_sidebarfilter.py
+++ b/src/gui/filters/sidebar/_sidebarfilter.py
@@ -219,7 +219,8 @@ class SidebarFilter(DbGUIElement):
         """
         hbox = Gtk.HBox()
         hbox.pack_start(widget, True, True, 0)
-        hbox.pack_start(widgets.SimpleButton(Gtk.STOCK_EDIT, self.edit_filter), False, False)
+        hbox.pack_start(widgets.SimpleButton(Gtk.STOCK_EDIT, self.edit_filter),
+                        False, False, 0)
         self.add_entry(text, hbox)
 
     def edit_filter(self, obj):
diff --git a/src/gui/glade/editevent.glade b/src/gui/glade/editevent.glade
index 72a227a62..ae5653529 100644
--- a/src/gui/glade/editevent.glade
+++ b/src/gui/glade/editevent.glade
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <!-- interface-requires gtk+ 2.12 -->
   <!-- interface-requires grampswidgets 0.0 -->
   <!-- interface-naming-policy project-wide -->
   <object class="GtkDialog" id="editevent">
@@ -247,9 +246,15 @@
                   </packing>
                 </child>
                 <child>
-                  <object class="GtkComboBoxEntry" id="personal_events">
+                  <object class="GtkComboBox" id="personal_events">
                     <property name="visible">True</property>
                     <property name="tooltip_text" translatable="yes">What type of event this is. Eg 'Burial', 'Graduation', ... .</property>
+                        <property name="has_entry">True</property>
+                        <child internal-child="entry">
+                          <object class="GtkEntry" id="personal_events-entry">
+                            <property name="can_focus">False</property>
+                          </object>
+                        </child>
                   </object>
                   <packing>
                     <property name="left_attach">1</property>
diff --git a/src/gui/managedwindow.py b/src/gui/managedwindow.py
index 78abe6827..7a488150a 100644
--- a/src/gui/managedwindow.py
+++ b/src/gui/managedwindow.py
@@ -460,7 +460,7 @@ class ManagedWindow(object):
             
         else :
             assert self.window, "ManagedWindow: self.window does not exist!"
-            self.set_transient_for(self.parent_window)
+            self.window.set_transient_for(self.parent_window)
             self.opened = True
             self.window.show_all()
 
diff --git a/src/gui/plug/quick/_quicktable.py b/src/gui/plug/quick/_quicktable.py
index 6cee8f02b..0a671b237 100644
--- a/src/gui/plug/quick/_quicktable.py
+++ b/src/gui/plug/quick/_quicktable.py
@@ -339,7 +339,7 @@ class QuickTable(SimpleTable):
         #treeview.enable_model_drag_dest(DdTargets.all_targets(),
         #                                Gdk.DragAction.DEFAULT)            
         treeview.connect('drag_data_get', self.object_drag_data_get)
-        treeview.set_grid_lines(Gtk.TREE_VIEW_GRID_LINES_BOTH)
+        treeview.set_grid_lines(Gtk.TreeViewGridLines.BOTH)
         #treeview.connect('row-activated', on_table_doubleclick, self)
         #treeview.connect('cursor-changed', on_table_click, self)
         treeview.connect('button-press-event', self.button_press_event)
diff --git a/src/gui/plug/quick/_textbufdoc.py b/src/gui/plug/quick/_textbufdoc.py
index 9a6415d26..d98841ea3 100644
--- a/src/gui/plug/quick/_textbufdoc.py
+++ b/src/gui/plug/quick/_textbufdoc.py
@@ -69,7 +69,7 @@ class DisplayBuf(ManagedWindow):
         document.text_view.set_buffer(document.buffer)
         self.window.connect('response', self.close)
         scrolled_window.add(document.text_view)
-        self.window.vbox.add(scrolled_window)
+        self.window.vbox.pack_start(scrolled_window, True, True, 0)
         self.window.show_all()
         
     def build_menu_names(self, obj):
diff --git a/src/gui/views/navigationview.py b/src/gui/views/navigationview.py
index fabf0924b..e8091d62b 100644
--- a/src/gui/views/navigationview.py
+++ b/src/gui/views/navigationview.py
@@ -39,6 +39,7 @@ _LOG = logging.getLogger('.navigationview')
 # gtk
 #
 #----------------------------------------------------------------
+from gi.repository import Gdk
 from gi.repository import Gtk
 
 #----------------------------------------------------------------
diff --git a/src/gui/widgets/buttons.py b/src/gui/widgets/buttons.py
index 87942579e..97d88883f 100644
--- a/src/gui/widgets/buttons.py
+++ b/src/gui/widgets/buttons.py
@@ -38,6 +38,7 @@ _LOG = logging.getLogger(".widgets.buttons")
 #
 #-------------------------------------------------------------------------
 from gi.repository import GObject
+from gi.repository import Gdk
 from gi.repository import Gtk
 
 #-------------------------------------------------------------------------