now only accept invitation button does not work

src/dialogs.py

@@ -1195,9 +1195,12 @@ class InvitationDialog:
 			string += '\n' + _('Comment: %s') % comment
 		
 		self.invitation_label.set_text(string)
+		
+		self.window.show_all()
+		self.xml.signal_autoconnect(self)
 
 	def on_accept_button_clicked(self, widget):
-		pass # join room
+		pass # FIXME: join room
 		
 	def on_decline_button_clicked(self, widget):
 		self.window.destroy()

src/gtkgui.glade

@@ -17770,7 +17770,6 @@ Maybe I'll refactor later</property>
 </widget>
 <widget class="GtkDialog" id="invitation_dialog">
-  <property name="visible">True</property>
   <property name="title">Invitation Received</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>