如何使工具栏中的工具按钮一次只选择一个？

Question

我有五个工具按钮在一个QToolbar通过toolbar.addAction()和如果我选择其中一个，我想让其他看起来没有检查。你知道吗

示例：如果我选择“A”按钮，程序现在处于“A”模式，其他程序将无法工作。你知道吗

Answer 1

必须使用QActionGroup，还必须激活QAction的checkable属性：

import sys
from PyQt5 import QtCore, QtGui, QtWidgets


class ToolDemo(QtWidgets.QMainWindow):
    def __init__(self, parent=None):
        super(ToolDemo, self).__init__(parent)
        self.setWindowTitle("toolbar demo")

        toolbarBox = QtWidgets.QToolBar(self)
        toolbarBox.setFixedWidth(180)

        self.addToolBar(QtCore.Qt.RightToolBarArea, toolbarBox)

        vscode_action = QtWidgets.QAction("VSCode", self, checkable=True)
        ptt_action = QtWidgets.QAction("Ppt", self, checkable=True)
        word_action = QtWidgets.QAction("Word", self, checkable=True)
        excel_action = QtWidgets.QAction("Excel", self, checkable=True)
        other_action = QtWidgets.QAction("other", self, checkable=True)

        group = QtWidgets.QActionGroup(self, exclusive=True)

        for action in (
            vscode_action,
            ptt_action,
            word_action,
            excel_action,
            other_action,
        ):
            toolbarBox.addAction(action)
            group.addAction(action)


def main():
    app = QtWidgets.QApplication(sys.argv)
    ex = ToolDemo()
    ex.show()
    sys.exit(app.exec_())


if __name__ == "__main__":
    main()

更新：

如果要在QToolBar中使用QCheckBox、QRadioButton、QPushButton和QToolButton等按钮，则必须使用QButtonGroup：

import sys
from PyQt5 import QtCore, QtGui, QtWidgets


class ToolDemo(QtWidgets.QMainWindow):
    def __init__(self, parent=None):
        super(ToolDemo, self).__init__(parent)
        self.setWindowTitle("toolbar demo")

        toolbarBox = QtWidgets.QToolBar(self)
        toolbarBox.setFixedWidth(180)

        self.addToolBar(QtCore.Qt.RightToolBarArea, toolbarBox)

        vscode_button = QtWidgets.QCheckBox(self, text="VSCode", checkable=True)
        ptt_button = QtWidgets.QCheckBox(self, text="Ppt", checkable=True)
        word_button = QtWidgets.QRadioButton(self, text="Word", checkable=True)
        excel_button = QtWidgets.QPushButton(self, text="Excel", checkable=True)
        other_button = QtWidgets.QToolButton(self, text="other", checkable=True)

        group = QtWidgets.QButtonGroup(self, exclusive=True)

        for button in (
            vscode_button,
            ptt_button,
            word_button,
            excel_button,
            other_button,
        ):
            toolbarBox.addWidget(button)
            group.addButton(button)


def main():
    app = QtWidgets.QApplication(sys.argv)
    ex = ToolDemo()
    ex.show()
    sys.exit(app.exec_())


if __name__ == "__main__":
    main()