import unittest
import comtypes.client

class EventHandler(object):
    """Instances are called when the COM object fires events."""
    def __init__(self, name):
        self.name = name

    def __call__(self, this, *args, **kw):
        print "Event %s fired" % self.name, args, kw

class Events(object):
    """Provide handlers for COM events."""
    def __init__(self):
        self._event_names = set()

    def __getattr__(self, name):
        if name.startswith("__") and name.endswith("__"):
            raise AttributeError(name)
        print "# event found:", name
        self._event_names.add(name)
        return EventHandler(name)

class EventsTest(unittest.TestCase):
    def test(self):
        sink = Events()
        o = comtypes.client.CreateObject("InternetExplorer.Application",
                                         sink = sink)

        from comtypes.gen.SHDocVw import IWebBrowser
        print
        print "Default interface", o
        print "IWebBrowser interface", o.QueryInterface(IWebBrowser)

        o.Visible = True
        o.Visible = False
        o.Quit()

if __name__ == "__main__":
    unittest.main()