python - PyQt5:检查动态创建的复选框是否存在并引用它们

Question

代码的基本布局

在这里，每次用户单击PushButton 'Press me'时，都会生成一个新的复选框。

from PyQt5 import QtWidgets, QtGui, QtCore

count = 1

class Window(QtWidgets.QWidget):
    def __init__(self, parent=None):
        super(Window, self).__init__(parent)

        self.vlayout = QtWidgets.QVBoxLayout()
        self.pushButton1 = QtWidgets.QPushButton("Press me", self)
        self.pushButton1.clicked.connect(self.addCheckbox(count))
        self.pushButton2 = QtWidgets.QPushButton("OK", self)
        self.vlayout.addWidget(self.pushButton1)
        self.vlayout.addWidget(self.pushButton2)

        self.setLayout(self.vlayout)

    def addCheckbox(self,count):
        global count
        self.vlayout.addWidget(str(count),QtWidgets.QCheckBox())
        count = count +1 

application = QtWidgets.QApplication(sys.argv)
window = Window()
window.setWindowTitle('Hello')
window.resize(250, 180)
window.show()
sys.exit(application.exec_())  

我想做什么？

现在您将拥有独特的复选框，每个复选框都有不同的编号，我想添加更多功能。

每次用户选择特定复选框时，我想知道用户在单击 PushButton OK 后单击了哪个复选框。例如:我单击复选框 1 -> 确定 -> 在屏幕上打印 1

我该怎么做？

PS:我们需要考虑用户从未点击Press me的可能性，因此不会生成复选框并直接点击OK

Answer 1

只需使用一个列表来存储QCheckBox，并通过迭代进行验证。

from PyQt5 import QtWidgets, QtGui, QtCore


class Window(QtWidgets.QWidget):
    def __init__(self, parent=None):
        super(Window, self).__init__(parent)

        self.vlayout = QtWidgets.QVBoxLayout(self)
        self.pushButton1 = QtWidgets.QPushButton("Press me")
        self.pushButton1.clicked.connect(self.addCheckbox)
        self.pushButton2 = QtWidgets.QPushButton("OK")
        self.pushButton2.clicked.connect(self.onClicked)

        self.vlayout.addWidget(self.pushButton1)
        self.vlayout.addWidget(self.pushButton2)

        self.checkboxes = []

    def addCheckbox(self):
        checkbox = QtWidgets.QCheckBox()
        self.checkboxes.append(checkbox)
        self.vlayout.addWidget(checkbox)

    def onClicked(self):
        for i, checkbox in enumerate(self.checkboxes):
            if checkbox.isChecked():
                print("print {} on the screen".format(i))

if __name__ == '__main__':
    import sys

    application = QtWidgets.QApplication(sys.argv)
    window = Window()
    window.setWindowTitle('Hello')
    window.resize(250, 180)
    window.show()
    sys.exit(application.exec_())