I guess you are talking about auto-completion in Qt Creator?

Moved to tools forum as it seems to be related to creator. Feel free to move again if I proof to be wrong :-)

The form.ui file is compiled into an ui_form.h file that must be included in your cpp. The autocompletion needs that .h file to work, so you should build your project after saving the changes to the .ui file in order to regenerate ui_form.h. After that autocompletion usually works again.

Although ui_form.h is included automatically on the header of form.cpp it not works !

But I added “ui->” before each variable and it works.

thanks a lot !