Autocompletion not working for Qt classes

[ornello]

I am experiencing that autocompletion is not working for Qt classes. For some classes it does, e.g. QDomDocument, but for most it does not. For example, autocompletion of basic types like QString and QFileInfo only suggests the following completions:

• Data
• operator =
• ~QString
• QString

Autocompletion however works for my own classes.

I have searched the forum for advice, but nothing helped me to fix the problem.

I am using Qt Creator 14.0.2 and Qt 5.15.2.

[markuz]

I have similar problems:
autocompletion works with user defined classes, but not with Qt classes.
Following some google search I have tried playing around with disabling and enabling the clang tools plugin. This did not change the autocompletion's behaviour.

I remember that autocompletion worked very smoothly with Qt Creator 4, which I have been using for a very long time .
I don't know exactly, when it stopped working.