As a follow up of \" Hide label text for Qt tabs without setting text to empty string \" :
Can I directly access the widgets within the tabs of the QTabBar
QTabBar
header sections are not actually widgets. They are drawn by QStylePainter
inside QTabBar::paintEvent
. Thus you can't get access to them.
As a workaround you can add a tab with an empty text and set a custom widget to it:
QTabBar *bar = new QTabBar;
bar->addTab("");
QLabel *label = new QLabel("my label");
bar->setTabButton(0, QTabBar::LeftSide, label);