Set tab alignment for QTabBar whith is not within QTabWidget

[YuJin]

I create two dockwidget in mainwindow,and dock them in same dockarea.

    QDockWidget* pDock1 = new QDockWidget("Console", this);
    QDockWidget* pDock2 = new QDockWidget("Project", this);
    addDockWidget(Qt::BottomDockWidgetArea, pDock1);
    addDockWidget(Qt::BottomDockWidgetArea, pDock2);
    tabifyDockWidget(pDock2, pDock1);
    setTabPosition(Qt::BottomDockWidgetArea, QTabWidget::North);

Also I create a QTabWidget as central widget for mainwindow. Add two widget to tabwidget.

    QTabWidget* pMainWidget = new QTabWidget(this);
    pMainWidget->setObjectName("TabWidget");
    setCentralWidget(pMainWidget);
    pMainWidget->addTab(new QWidget(this), "Game");
    pMainWidget->addTab(new QWidget(this), "Scene");

I want both tabbar can draw tab from right to left.

I want use setStyleSheet to do this.

setStyleSheet("QTabBar::tab {subcontrol-position:right center;background:red}")

It don't work for layout positioni,but background color wroks!

Then I replace styleSheet with

setStyleSheet("QTabWidget::tab-bar {subcontrol-position:right center;background:red}");

After that position works on QTabBar within QTabWidget.

How can I set Tab alignment for QTabBar not within QTabWidget.

Result of the code.

Note:
1 Is the result wihtin QTabWidget.
2 Is the result not within QTabWidget.

[Axel Spoerl]

@YuJin
I struggle to see, how the calls to setStyleSheet()actually affect the picture shown: They are supposed to make the tabs have a red background, while the picture shows a grey background.

To set a right-to-left layout direction, you can simply call setLayoutDirection(Qt::RightToLeft)on any widget. The tab bar used for dock widgets (both in a floating tab and on the main window) inherits from QTabBar and adds some specific implementations. I assume, that the first code snippet is located in a class inheriting from QMainWindow. You can find and customize those tab bars, by adding

const auto bars = findChildren<QTabBar *>();
for (auto *bar : bars)
    bar->setLayoutDirection(Qt::RightToLeft);

[YuJin]

@Axel-Spoerl
Sorry about that.
The picture is the second sytlesheet result.

setStyleSheet("QTabWidget::tab-bar {subcontrol-position:right center;background:red}");

Only QTabwidget tab position affected.

The first stylesheet affect for background like this.

Think you very much!
The function setLayoutDircetion works in windows.

I try it before. But I don't remeber wther it works in maxOS.
I will try it later.

By the way,Is there any way to control QTabBar layout direction by Qss which is not whitin QTabWidget?

[Axel Spoerl]

@YuJin said in Set tab alignment for QTabBar whith is not within QTabWidget:

By the way,Is there any way to control QTabBar layout direction by Qss which is not whitin QTabWidget?

No, as far as I know. That would not make too much sense, as this property is style-independent.