Disable close button on QTabWidget/QTabBar

I'm using QTabWidget with close button on each tab (tabsClosable). But I want one or two tabs that can't be closed by the user.

Is there a way to do it? I searched the documentation and I don't have any clue...

Thanks in advance,
Toni

QTabBar has a function called QTabBar::setTabButton. You can create your own close button and set it to the tabs that you want.