[pygtk] CellRendererCombo behavior

[Nick Edds]

I want to use a cellRendererCombo to allow for the selection of an item from
a list. I do not want the user to be able to choose a selection other than
those in the list, so I set the has_entry property of my cellRendererCombo
to be False. The problem is that on a cellRendererCombo with has_entry =
False, you have to click and hold to select an item from the drop-down list.
I think the behavior of a cellRendererCombo with entry is more intuitive, so
I would like to be able to click once to trigger the dropdown list and click
again to select an item. Is there a good way to do this short of messing
with the mouse pressed handlers on my TreeView?
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