<table cellspacing='0' cellpadding='0' border='0' ><tr><td valign='top' style='font: inherit;'>Hi, I'm trying to create a rectangle when the user presses or releases the mouse over a cairo object.I'm using the eventBox to capture the mouse events. Now the problem is the shapes is beng drawn when I call it from the expose_event event handler and nothing happens when I call the same from the mouse release event handler. Here is my code : #!/usr/bin/env python import sys import cairo import gtk start = None #Starting co-ords stop = None #Ending co-ords box = None  #Tuple of co-ords for drawing rect ctx = None #Cairo Widget def button_press(widget, event, surface):     global start     start = (int(event.x),int(event.y)) def motion_notify(widget, event, surface):     pass def button_release(widget, event, surface):     global stop,ctx     ctx = None     ctx = widget.window.cairo_create()     ctx.set_source_surface(surface, 0,0)     ctx.paint()     print ctx     stop =  (int(event.x),int(event.y))     box = (start[0],start[1])     draw_dotrect(ctx,box)     print "Released" + str(box) def draw_dotrect(ctx,box):     ctx.set_source_rgba(0, 0, 0,0.5)     ctx.save()     ctx.new_path()     ctx.translate(3*20, 0)     square(ctx,box)     ctx.fill()     ctx.restore()     ctx.set_line_width(20 / 16)     ctx.set_tolerance(0.1)     ctx.set_line_join(cairo.LINE_JOIN_MITER)     ctx.set_dash([20/2.0, 20/2.0], 8)     ctx.save()     ctx.new_path()     ctx.set_source_rgb(0,0 ,0 )     ctx.translate(3*20, 0)     square(ctx,box)     ctx.stroke_preserve()     ctx.restore()     def expose_event(widget, event, surface):     global ctx     ctx = widget.window.cairo_create()     ctx.set_source_surface(surface, 0,0)     ctx.paint()         #draw_dotrect(ctx,(20,20)) # If called from here,it works         def square(ctx,box):     ctx.move_to(0, 0)     ctx.rel_line_to(2*50, 0)     ctx.rel_line_to(0, 2*50)     ctx.rel_line_to(-2*50, 0)     ctx.close_path()         if len(sys.argv) != 2:         raise SystemExit('usage: png_view.py png_file') filename = sys.argv[1] surface = cairo.ImageSurface.create_from_png(filename) Width  = surface.get_width() Height = surface.get_height() win = gtk.Window() win.connect('destroy', gtk.main_quit) event_box = gtk.EventBox() win.add(event_box) drawingarea = gtk.DrawingArea() event_box.add(drawingarea) drawingarea.connect('expose_event', expose_event, surface) event_box.connect('button_press_event',button_press,surface) event_box.connect('button_release_event',button_release,surface) event_box.connect('motion_notify_event',motion_notify,surface) drawingarea.set_size_request(Width,Height) win.show_all() gtk.main() It doesn't throw me any error.I hardcoded the box to simplify things .    I also create a new ctx in the release event handler else it throws an error:<a style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="link" href="http://www.cairographics.org/manual/cairo-Error-Handling.html#CAIRO-STATUS-SURFACE-FINISHED:CAPS"><code class="literal">CAIRO_STATUS_SURFACE_FINISHED</code></a> Any ideas why ? " life isn't heavy enough,it flies away and floats far above action"</td></tr></table> <hr size=1> Start at the new Yahoo!7 for a better online experience - <a href="http://au.rd.yahoo.com/mail/taglines/au/y7mail/default/*http://au.docs.yahoo.com/somethingwonderful/index.php?p1=brand&p2=other&p3=au&p4=tagline" target=_blank>Start Here</a>.