[pygtk] ProgressBar widget click event

[Noah Schwartz]

I don't seem to be able to capture the click event for ProgressBar. I tried 
connecting the button-press-event to a function but, it wasn't getting 
called. Then I set it up to capture all events and still I wasn't capturing 
clicks.

What I need to do is to be able to pass the click event back up to the 
progressbar's parent widget. I am using the progressbar as a tab for a 
notebook widget and clicking on the progressbar doesnt activate that tab. I 
have a suspicision its grabbing the click event and eating it but, I dont 
seem to be able to prevent it.