QDeleteAll issue with QMap<QString,QObject *>

[Babs]

Hello, I'm working on a QML API.
I call QDeleteAll in order to delete my list of Objects stored in QMap<QString, CanMessage*>. CanMessage inherits QObject.
when i call the qDeleteAll my application crash.
Can anyone help,pls?

[JKSH]

@Babs said in QDeleteAll issue with QMap<QString,QObject *>:

when i call the qDeleteAll my application crash.

Run your Debugger. What does your Stack Trace show when it crashes?

You might need to call QObject::deleteLater() instead of deleting them directly.

[Babs]

@JKSH deleteLater() is not working either. It provoke a segmentation fault

[KroMignon]

@Babs said in QDeleteAll issue with QMap<QString,QObject *>:

when i call the qDeleteAll my application crash.

Are you sure your QMap is correctly initialized? All values are valid? No dangling pointers?

As you are saying CanMessage inherits from QObject, I would suggest you to use QPointer and change your type declaration to QMap<QString , QPointer<CanMessage> >, this should avoid to have duplicated deallocation.

[Babs]

@KroMignon thank you. I used QPointer and it works properly.

[SGaist]

Hi,

Then post the stack trace corresponding to your crash.