python - 将图标添加到选项卡(QTabWidget)？

Question

我正在使用带有三个选项卡的QTabWidget。
其中一个选项卡是关于信息/帮助的。所以我想使用问号图片 (.png) 而不是文本“帮助”。

这可能吗？我正在使用 Python/PyQt，但只能找到 C++

的解决方案

Answer 1

int QTabWidget::addTab(QWidget *page, const QIcon &icon, const QString &label)

Adds a tab with the given page, icon, and label to the tab widget, and returns the index of the tab in the tab bar. Ownership of page is passed on to the QTabWidget.

<小时/>

void QTabWidget::setTabIcon(int index, const QIcon &icon)

Sets the icon for the tab at position index.

import sys
from PyQt5 import QtCore, QtGui, QtWidgets

class Window(QtWidgets.QMainWindow):
    def __init__(self, parent=None):
        super(Window, self).__init__(parent)
        
        self.qtabwidget = QtWidgets.QTabWidget(self) 
        
        widget  = QtWidgets.QPlainTextEdit("QPlainTextEdit 1")
        label   = 'Tab &1'
        widget2 = QtWidgets.QPlainTextEdit("QPlainTextEdit 2")
        
        tab_index1 = self.qtabwidget.addTab(widget, label)
        
        tab_index2 = self.qtabwidget.addTab(widget2, 'Tab &2')
        self.qtabwidget.setTabIcon(tab_index2, QtGui.QIcon('im.png'))                # <---  
        self.qtabwidget.setIconSize(QtCore.QSize(32, 32)) 
        
        self.qtabwidget.addTab(
                QtWidgets.QLabel("QLabel Tab &3", alignment=QtCore.Qt.AlignCenter), 
                QtGui.QIcon('Ok.png'),                                               # < ---
                'Tab &3')
        
        self.qtabwidget.addTab(None, "No Widget")
        
        self.qtabwidget.setTabsClosable(True)  
        self.qtabwidget.tabCloseRequested.connect(self.qtabwidget_tabcloserequested)
        self.qtabwidget.setTabShape(QtWidgets.QTabWidget.Triangular)
        self.qtabwidget.setTabPosition(QtWidgets.QTabWidget.East)  
        self.qtabwidget.setTabEnabled(0, False)         # disable tab
        self.qtabwidget.setTabEnabled(1, True)          # enable tab
        self.qtabwidget.currentChanged.connect(self.qtabwidget_currentchanged)
       
        self.setCentralWidget(self.qtabwidget)

    @QtCore.pyqtSlot(int)
    def qtabwidget_tabcloserequested(self, index):
        # gets the widget
        widget = self.qtabwidget.widget(index)
        # if the widget exists
        if widget:
            widget.deleteLater()
        # removes the tab of the QTabWidget
        self.qtabwidget.removeTab(index)
        
    @QtCore.pyqtSlot(int)
    def qtabwidget_currentchanged(self, index):
        print(f"\n New index of current page: {index}")


if __name__ == '__main__':
    application = QtWidgets.QApplication(sys.argv)
    window = Window()
    window.setWindowTitle('QTabWidget')
    window.resize(400, 400)
    window.show()
    sys.exit(application.exec_())