PyQt5--QCheckBox

 1 # -*- coding:utf-8 -*-
 '''
 Created on Sep 20, 2018

 @author: SaShuangYiBing

 Comment:
 '''
 import sys
 from PyQt5.QtCore import Qt
 from PyQt5.QtWidgets import QApplication,QWidget,QCheckBox

 class New_test(QWidget):
     def __init__(self):
         super().__init__()
         self.initUI()

     def initUI(self):
         cb = QCheckBox('Show Title',self)
         cb.move(20,20)
         cb.toggle()  # 因为前面已经设置了标题，所以这里就需要先将checkbox默认勾上，否则会导致和一次时标题与复选框状态对不上
         cb.stateChanged.connect(self.changeTitle)  # 将复选框的状态改变信号连接到自定义的槽函数changeTitle上

         self.setGeometry(300,300,250,150)
         self.setWindowTitle('QCheck Box')
         self.show()

     def changeTitle(self,state):
         if state == Qt.Checked:
             self.setWindowTitle('QCheck Box')
         else:
             self.setWindowTitle('')

 if __name__ == '__main__':
     app = QApplication(sys.argv)
     ex = New_test()
     sys.exit(app.exec_())

复选框默认勾上的标题

取消勾选的标题提示