Question

我正在尝试使我的QComboBox可检查。我搜索了类似的帖子，但其中许多仍未得到答复，我没有设法应用此处发布的解决方案（QCombobox of Checkboxes）。目前我定义了这个类：

class myCombo(QComboBox):
    def __init__(self, parent = None):
        super(myCombo, self).__init__(parent)
        self.setStyleSheet("QComboBox{"
                           "font-size:12px;"
                           "color:black;"
                           "background-color:white;"
                           "border:1px solid black;"
                           "padding:1px;""}")

        self.setEditable(True)
        self.lineEdit().setAlignment(Qt.AlignCenter)
        self.lineEdit().setReadOnly(True)

我的目标是添加一个属性，该属性可以检查项目，以便可以进行多项选择。这可以在没有将这个'复选框'硬编码到QComboBox中的情况下进行管理吗？

上面定义的QComboBox类使用如下：

class sWindow(QMainWindow):
    def __init__(self):
        QMainWindow.__init__(self)

        years = [' ', '2017', '2018', '2019', '2020']
        months = [' ', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12']

        self.setMinimumSize(QSize(360, 140))    
        self.setWindowTitle("Dialog") 

        self.yearLabel = QLabel(self)
        self.yearLabel.setText('Select Year(s):')
        self.firstLine = myCombo(self)
        self.firstLine.addItems(years)
        self.firstLine.move(120, 20)
        self.firstLine.resize(200, 32)
        self.yearLabel.move(20, 20)

        self.monthLabel = QLabel(self)
        self.monthLabel.setText('Select Month(s):')
        self.secondLine = myCombo(self)
        self.secondLine.addItems(months)
        self.secondLine.move(120, 60)
        self.secondLine.resize(200, 32)
        self.monthLabel.move(20, 60)

        okButton = QPushButton('OK', self)
        okButton.clicked.connect(self.okClicked)
        okButton.resize(100, 32)
        okButton.move(120, 100)

        cancelB = QPushButton('Cancel', self)
        cancelB.clicked.connect(self.cancelClicked)
        cancelB.resize(100, 32)
        cancelB.move(220, 100)  

    def okClicked(self):
        self.close()

    def cancelClicked(self):
        self.close()


if __name__ == '__main__':

    app = QApplication(sys.argv)
    main = sWindow()
    main.show()
    sys.exit(app.exec_())

我希望能够在月份组合框中选择1,2,3。谢谢你的任何建议！

Answer 1

使用这个有用的链接：

PyQt: How to set Combobox Items be Checkable?

我设法让它工作（例如，一个组合框包含可检查的年份）：

class CheckableComboBox(QComboBox):
    def __init__(self, parent = None):
        super(CheckableComboBox, self).__init__(parent)
        self.view().pressed.connect(self.handleItemPressed)
        self.setModel(QStandardItemModel(self))

    def handleItemPressed(self, index):
        item = self.model().itemFromIndex(index)
        if item.checkState() == Qt.Checked:
            item.setCheckState(Qt.Unchecked)
        else:
            item.setCheckState(Qt.Checked)

class Dialog_01(QMainWindow):
    def __init__(self):
        super(QMainWindow,self).__init__()

        years = ['2017', '2018', '2019', '2020']

        myQWidget = QWidget()
        myBoxLayout = QVBoxLayout()
        myQWidget.setLayout(myBoxLayout)
        self.setCentralWidget(myQWidget)
        self.ComboBox = CheckableComboBox()
        for index, element in enumerate(years):
            self.ComboBox.addItem(element)
            item = self.ComboBox.model().item(index, 0)
            item.setCheckState(Qt.Unchecked)
        myBoxLayout.addWidget(self.ComboBox)

if __name__ == '__main__':

    app = QApplication(sys.argv)
    main = Dialog_01()
    main.show()
    sys.exit(app.exec_())

如何在QComboBox类中制作可检查PYQT5的项目

1 个答案: