[PyQt] Handling of Ctrl-C/SIGINT in PyQt

[Florian Bruhin]

Hi!

It seems to be surprising for many people why Ctrl-C doesn't work in
PyQt applications:

    http://stackoverflow.com/q/4938723
    http://stackoverflow.com/q/5160577
    https://www.mail-archive.com/pyqt@riverbankcomputing.com/msg13757.html
    etc.

If I want to run custom code on Ctrl-C, it seems the only solution is
the one presented at [1], i.e. running a QTimer which executes
something like "lambda: None" all few milliseconds.

[1] http://stackoverflow.com/a/4939113

This is because Python only handles the signal after control has been
passed to Python.

Couldn't PyQt have something similiar to pyqtRemoveInputHook and
pyqtRestoreInputHook to register a signal handler for a given signal
on C++ level, and then somehow give the control to Python so it can
process the signal?

Florian

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