added the test_mouseclicks.py script in the examples/event_handling directory

Author: dhyams

examples/event_handling/test_mouseclicks.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+import matplotlib
+#matplotlib.use("WxAgg")
+#matplotlib.use("TkAgg")
+matplotlib.use("GTKAgg")
+#matplotlib.use("QtAgg")
+#matplotlib.use("Qt4Agg")
+import matplotlib.pyplot as plt
+import math
+import numpy
+
+print "***** TESTING WITH BACKEND: %s"%matplotlib.get_backend() + " *****"
+
+def OnClick(event):
+   if event.dblclick:
+      print "DBLCLICK",event
+   else:
+      print "DOWN",event
+
+def OnRelease(event):
+    print "UP",event
+
+
+fig = plt.gcf()
+cid_up = fig.canvas.mpl_connect('button_press_event',OnClick)
+cid_down = fig.canvas.mpl_connect('button_release_event',OnRelease)
+
+t = numpy.arange(0.0,3.0,0.01)
+s = numpy.sin(2*math.pi*t)
+plt.plot(t,s)
+
+plt.show()
+