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#!/usr/bin/env python
import cairo
import gtk
def expose_event(widget, event):
ctx = widget.window.cairo_create()
ctx.set_line_width(6)
ctx.set_tolerance(.1)
ctx.select_font_face('sans-serif')
ctx.set_font_size(48)
(x, y, width, height, dx, dy) = ctx.text_extents('Hello World')
ctx.translate (100, 100)
ctx.new_path()
ctx.move_to(x-10,y-10)
ctx.rel_line_to(width + 20, 0)
ctx.rel_line_to(0, height + 20)
ctx.rel_line_to(-(width + 20), 0)
ctx.close_path()
ctx.set_source_rgb(0,0,1)
ctx.stroke()
ctx.move_to(0, 0)
ctx.set_source_rgb(0,0,0)
ctx.show_text('Hello World')
win = gtk.Window()
win.connect('destroy', gtk.main_quit)
drawingarea = gtk.DrawingArea()
win.add(drawingarea)
drawingarea.connect('expose_event', expose_event)
drawingarea.set_size_request(400,150)
win.show_all()
gtk.main()