@@ -11,11 +11,9 @@ class MyDotWindow(xdot.DotWindow):

 	def __init__(self):

 		xdot.DotWindow.__init__(self)

+		self.widget.connect('clicked', self.on_url_clicked)

-	def get_name(self, name):

-		return 'My Dot Window'

-

-	def on_url_clicked(self, url, event):

+	def on_url_clicked(self, widget, url, event):

 		dialog = gtk.MessageDialog(

 				parent = self, 

 				buttons = gtk.BUTTONS_OK,

@@ -3,13 +3,14 @@

 __author__ = "Jose Fonseca"

-__version__ = "0.2"

+__version__ = "0.3"

 import sys

 import subprocess

 import math

+import gobject

 import gtk

 import gtk.gdk

 import gtk.keysyms

@@ -472,13 +473,16 @@ class XDotParser:

 class DotWidget(gtk.DrawingArea):

+	__gsignals__ = {

+		'expose-event': 'override',

+		'clicked' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_STRING, gtk.gdk.Event))

+	}

+

 	def __init__(self):

 		gtk.DrawingArea.__init__(self)

 		self.graph = Graph()

-		self.connect("expose_event", self.on_expose)

-

 		self.set_flags(gtk.CAN_FOCUS)

 		self.add_events(gtk.gdk.BUTTON_PRESS_MASK | gtk.gdk.BUTTON_RELEASE_MASK)

@@ -510,8 +514,8 @@ class DotWidget(gtk.DrawingArea):

 		self.graph = parser.parse()

 		self.zoom_image(self.zoom_ratio, center=True)

-	def on_expose(self, area, event):

-		cr = area.window.cairo_create()

+	def do_expose_event(self, event):

+		cr = self.window.cairo_create()

 		# set a clip region for the expose event

 		cr.rectangle(

@@ -606,7 +610,8 @@ class DotWidget(gtk.DrawingArea):

 		x, y = int(event.x), int(event.y)

 		url = self.get_url(x, y)

 		if url is not None:

-			return self.on_url_clicked(url, event)

+			self.emit('clicked', unicode(url), event)

+			return True

 		return False

@@ -658,9 +663,6 @@ class DotWidget(gtk.DrawingArea):

 		y = self.graph.height - y

 		return self.graph.get_url(x, y)

-	def on_url_clicked(self, url, event):

-		return False

-

 class DotWindow(gtk.Window):

@@ -722,16 +724,11 @@ class DotWindow(gtk.Window):

 		self.set_focus(self.widget)

-		self.widget.on_url_clicked = self.on_url_clicked

-

 		self.show_all()

 	def set_dotcode(self, dotcode):

 		self.widget.set_dotcode(dotcode)

-	def on_url_clicked(self, url, event):

-		return False

-

 def main():

 	import optparse