在这个答案中，我将使用C ++编写的另一个答案进行python转换。
from PyQt5 import QtCore, QtGui, QtWidgetsclass TabBar(QtWidgets.QTabBar): def tabSizeHint(self, index): s = QtWidgets.QTabBar.tabSizeHint(self, index) s.transpose() return s def paintEvent(self, event): painter = QtWidgets.QStylePainter(self) opt = QtWidgets.QStyleOptionTab() for i in range(self.count()): self.initStyleOption(opt, i) painter.drawControl(QtWidgets.QStyle.CE_TabBarTabShape, opt) painter.save() s = opt.rect.size() s.transpose() r = QtCore.QRect(QtCore.QPoint(), s) r.moveCenter(opt.rect.center()) opt.rect = r c = self.tabRect(i).center() painter.translate(c) painter.rotate(90) painter.translate(-c) painter.drawControl(QtWidgets.QStyle.CE_TabBarTabLabel, opt); painter.restore()class TabWidget(QtWidgets.QTabWidget): def __init__(self, *args, **kwargs): QtWidgets.QTabWidget.__init__(self, *args, **kwargs) self.setTabBar(TabBar(self)) self.setTabPosition(QtWidgets.QTabWidget.West)if __name__ == '__main__': import sys app = QtWidgets.QApplication(sys.argv) w = TabWidget() w.addTab(QtWidgets.QWidget(), "tab1") w.addTab(QtWidgets.QWidget(), "tab2") w.addTab(QtWidgets.QWidget(), "tab3") w.show() sys.exit(app.exec_())
