如何在PyQt5中设置QTabBar旁边的图像

from PyQt5.QtWidgets import QTabBar, QStylePainter, QStyleOptionTab, QWidget, QApplication
from PyQt5.QtGui import QIcon, QPainter

class CustomTabBar(QTabBar):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.tabIcon = QIcon("path_to_icon.png")  # 设置图像路径

    def paintEvent(self, event):
        painter = QStylePainter(self)
        option = QStyleOptionTab()

        for index in range(self.count()):
            self.initStyleOption(option, index)
            painter.drawControl(QStyle.CE_TabBarTabShape, option)

            # 绘制图像
            tabRect = self.tabRect(index)
            iconRect = tabRect.adjusted(5, 5, -5, -5)  # 调整图像位置
            painter.drawPixmap(iconRect, self.tabIcon.pixmap(iconRect.size()))

            painter.drawControl(QStyle.CE_TabBarTabLabel, option)

if __name__ == "__main__":
    import sys
    app = QApplication(sys.argv)

    tabBar = CustomTabBar()
    tabBar.addTab("Tab 1")
    tabBar.addTab("Tab 2")
    tabBar.addTab("Tab 3")

    widget = QWidget()
    widget.setWindowTitle("Custom TabBar Example")
    widget.resize(400, 300)
    layout = QVBoxLayout(widget)
    layout.addWidget(tabBar)
    widget.show()

    sys.exit(app.exec_())