[PyQt] catch mouse click on invalid index (QtableView)

[Sam Sterckval]

Hi,
I'm trying to make a table view witch expands a cell if its selected.
The expanding works, the contracting works also if you click another cell,
but wont work if you click outside a cell (in a 'invalid index'), because
there is no signal emitted if the index is invalid.

Can anyone give me some help how to solve this?

Thanks in advance!
Sam
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