CAM: Job editor crashes / UI elements missing
#21.258 aberto em 11 de mai. de 2025
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Description
Is there an existing issue for this?
- I have searched the existing issues
Problem description
From: https://github.com/FreeCAD/FreeCAD/pull/20307#issuecomment-2851439318
CAM Job editor crashes randomly in various places with similar PySide errors like RuntimeError: Internal C++ object (PySide.QtGui.QWidget) already deleted. or random UI objects missing attributes, etc.
https://www.tech-artists.org/t/pyside-in-maya-internal-c-object-already-deleted-for-returned-pyside-objects/4877/6
@phaseloop suspects Firstly, unnecessary recalculation. Many ops will fully recalculate on closing even when nothing has changed or if Cancel Btn is pressed. There is very little tracking of "dirty" states. The presumably also impacts when variable changes trigger updates.
Second is the idea that error checking is not "good python style". There seems to be the idea that instead of checking whether something exists before referencing it, you just do it anyway and let it raise and exception if it fails. Then the exceptions are not trapped where they occur (that's bad practice too) and are allowed to bubble up and cause a mess later, maybe with a chain reaction of uninitialised objects.
Full version info
tbd
Subproject(s) affected?
CAM
Anything else?
No response
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