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39 复选框控件(QCheckBox)

鱼满舱 2022-02-19 阅读 47

三种状态

未选中 0
半选中 1
选中 2

import sys
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *

class QCheckBoxDemo(QWidget):
    def __init__(self):
        super(QCheckBoxDemo, self).__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('复选框控件演示')

        self.checkBox1 = QCheckBox('复选框控件1')
        self.checkBox1.setCheckable(True)
        self.checkBox1.stateChanged.connect(lambda: self.checkBoxState(self.checkBox1))

        self.checkBox2 = QCheckBox('复选框控件2')
        self.checkBox2.stateChanged.connect(lambda: self.checkBoxState(self.checkBox2))

        self.checkBox3 = QCheckBox('复选框控件3')
        '''设置半选中状态 start'''
        self.checkBox3.setTristate(True)
        self.checkBox3.setCheckState(Qt.PartiallyChecked)
        '''设置半选中状态 end'''
        self.checkBox3.stateChanged.connect(lambda: self.checkBoxState(self.checkBox3))

        layout = QHBoxLayout()
        layout.addWidget(self.checkBox1)
        layout.addWidget(self.checkBox2)
        layout.addWidget(self.checkBox3)
        self.setLayout(layout)

    def checkBoxState(self, cb):
        checkStatus1 = self.checkBox1.text() + ', isChecked=' + str(
            self.checkBox1.isChecked()) + ', checkState=' + str(self.checkBox1.checkState())+ '\n'
        checkStatus2 = self.checkBox2.text() + ', isChecked=' + str(
            self.checkBox2.isChecked()) + ', checkState=' + str(self.checkBox2.checkState()) + '\n'
        checkStatus3 = self.checkBox3.text() + ', isChecked=' + str(
            self.checkBox3.isChecked()) + ', checkState=' + str(self.checkBox3.checkState()) + '\n'

        print(checkStatus1 + checkStatus2 + checkStatus3)



if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = QCheckBoxDemo()
    win.show()
    sys.exit(app.exec_())
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