[PyQt] Guaranteed avoidance of C++ destructor call
John Lee
jjl at pobox.com
Thu May 30 22:49:24 BST 2013
Hi
Is it possible to guarantee that a C++ destructor of a QObject wrapped by
PyQt is never called?
In C++ code, I can just avoid ever deleting the QObject, by not giving it
a QObject parent, so that Qt does not manage its lifetime. In Python
code, it isn't obvious to me whether Python might cause the C++ d'tor to
be called, for example during interpreter shutdown.
The particular case I'm interested in is ~QProcess, whose destructor has
the interesting (!) behaviour of sending the KILL signal to any child
process that it may have started. I want to ensure that my program
doesn't ever call that destructor, so that the KILL signal is guaranteed
not to be sent (or at least, that it is only called after the child
process has terminated for other reasons). Is that possible?
If I can't guarantee that from PyQt, can I write a simple sip wrapper that
will achieve the same end, without copying and pasting the Qt code?
John
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