diff --git a/gramps2/ChangeLog b/gramps2/ChangeLog
index bc1f3c74e..38a4acb30 100644
--- a/gramps2/ChangeLog
+++ b/gramps2/ChangeLog
@@ -1,6 +1,12 @@
-2005-04-08  Richard Taylor <rjt-gramps@thegrindstone.me.uk>
+2005-04-08  Martin Hawlisch  <Martin.Hawlisch@gmx.de>
 	* src/Utils.py (probably_alive): Added two more checks for birth and death year
 
+	* src/gramps_main.py: Added "Invert" checkbox for person filter;
+	 Fix "active-changed" signals to not cause Tracebacks.
+	* src/gramps.glade: Added "Invert" checkbox for person filter
+	* src/PeopleView.py (build_tree): Pass Invert state for Filter to PeopleModel
+	* src/PeopleModel.py: Enable invertation of filter result 
+
 2005-04-08  Richard Taylor <rjt-gramps@thegrindstone.me.uk>
 	* src/Utils.py (probably_alive): fix some bugs and added checking of ancestors.
 	
diff --git a/gramps2/src/PeopleModel.py b/gramps2/src/PeopleModel.py
index 130a52cbf..5122cfed0 100644
--- a/gramps2/src/PeopleModel.py
+++ b/gramps2/src/PeopleModel.py
@@ -69,12 +69,13 @@ _CHANGE_COL= 21
 #-------------------------------------------------------------------------
 class PeopleModel(gtk.GenericTreeModel):
 
-    def __init__(self,db,data_filter=None):
+    def __init__(self,db,data_filter=None,invert_result=False):
         gtk.GenericTreeModel.__init__(self)
 
         self.db = db
         self.visible = {}
         self.top_visible = {}
+        self.invert_result = invert_result
         self.rebuild_data(data_filter)
     
     def rebuild_data(self,data_filter=None,skip=None):
@@ -96,6 +97,8 @@ class PeopleModel(gtk.GenericTreeModel):
         if data_filter:
             handle_list = self.db.get_person_handles(sort_handles=False)
             keys = data_filter.apply(self.db,handle_list)
+            if self.invert_result:
+                keys = [k for k in handle_list if k not in keys]
             del handle_list
         else:
             keys = self.db.get_person_handles(sort_handles=False)
diff --git a/gramps2/src/PeopleView.py b/gramps2/src/PeopleView.py
index efe84a795..26f32fd5c 100644
--- a/gramps2/src/PeopleView.py
+++ b/gramps2/src/PeopleView.py
@@ -169,7 +169,8 @@ class PeopleView:
 
     def build_tree(self):
         self.person_model = PeopleModel.PeopleModel(self.parent.db,
-                                                    self.DataFilter)
+                                                    self.DataFilter,
+                                                    self.parent.filter_invert.get_active())
         self.person_tree.set_model(self.person_model)
         
     def blist(self, store, path, node, id_list):
diff --git a/gramps2/src/gramps.glade b/gramps2/src/gramps.glade
index af7e7d30f..8f814943c 100644
--- a/gramps2/src/gramps.glade
+++ b/gramps2/src/gramps.glade
@@ -1391,6 +1391,25 @@
 			</packing>
 		      </child>
 
+		      <child>
+			<widget class="GtkCheckButton" id="filter_invert">
+			  <property name="visible">True</property>
+			  <property name="can_focus">True</property>
+			  <property name="label" translatable="yes">Invert</property>
+			  <property name="use_underline">True</property>
+			  <property name="relief">GTK_RELIEF_NORMAL</property>
+			  <property name="focus_on_click">True</property>
+			  <property name="active">False</property>
+			  <property name="inconsistent">False</property>
+			  <property name="draw_indicator">True</property>
+			</widget>
+			<packing>
+			  <property name="padding">0</property>
+			  <property name="expand">False</property>
+			  <property name="fill">False</property>
+			</packing>
+		      </child>
+
 		      <child>
 			<widget class="GtkButton" id="apply_filter">
 			  <property name="visible">True</property>
diff --git a/gramps2/src/gramps_main.py b/gramps2/src/gramps_main.py
index c62bbcb28..84dd8fce4 100755
--- a/gramps2/src/gramps_main.py
+++ b/gramps2/src/gramps_main.py
@@ -110,7 +110,7 @@ class Gramps(GrampsDBCallback.GrampsDBCallback):
 
     __signals__ = {
         'database-changed' : (GrampsDbBase.GrampsDbBase,),
-        'active-changed' : (unicode,),
+        'active-changed' : (str,),
         }
 
     def __init__(self,args):
@@ -291,6 +291,7 @@ class Gramps(GrampsDBCallback.GrampsDBCallback):
         self.toolbardock = self.gtop.get_widget("dockitem2")
         self.filter_text = self.gtop.get_widget('filter')
         self.filter_label= self.gtop.get_widget('filter_label')
+        self.filter_invert= self.gtop.get_widget('filter_invert')
         self.qual_label  = self.gtop.get_widget("qual")
         self.child_type  = self.gtop.get_widget("childtype")
         self.spouse_tab  = self.gtop.get_widget("lab_or_list")
@@ -1452,7 +1453,7 @@ class Gramps(GrampsDBCallback.GrampsDBCallback):
             self.set_buttons(0)
             self.active_person = None
             self.modify_statusbar()
-            self.emit('active-changed',(None,))
+            self.emit('active-changed',('',))
         elif (self.active_person == None or
               person.get_handle() != self.active_person.get_handle()):
             self.active_person = self.db.get_person_from_handle(person.get_handle())