Modifying QStandardItemModel from non-UI QThread?

[m3rlinez]

Hi,

I have Qt4 app which binds QStandardItemModel to the QListView and have the model updated from background/non-UI thread.

Sometimes, when the QStandardItem's setText(..) method is called very repeatedly from the non-UI thread, the application will crash at data_changed(..) handler. I can reproduce the issue by calling setText("xxxxx") repeatedly in a loop. In my app, the data is read from network hence I update the model in separate, non-UI thread.

Is this a common pb? Having search the forums but couldn't find sth similar ...

Thanks!

[wysota]

You cannot directly interact with QStandardItemModel from a worker thread.

[m3rlinez]

@wysota Thanks for confirming this! Looks like I will have to go with slot + signal to update QStandardItemModel from GUI thread .. Just imagine it would be nice if we have a thread-safe version (:

[wysota]

Just imagine it would be nice if we have a thread-safe version (:

The whole Qt would probably become much much slower then.