pyqt5 添加属性-类方法用属性形式访问

方法一 装饰器法

 import sys
 from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QHBoxLayout,QLabel
 from PyQt5.QtGui import QColor
 from PyQt5.QtCore import pyqtProperty,Qt

 class Demo(QWidget):
     def __init__(self):
         super(Demo, self).__init__()
         self.c=QColor(Qt.red)

     @pyqtProperty(QColor)   #获取属性,注意要传入属性的类型
     def color(self):
         return self.c

     @color.setter          #设置属性
     def color(self,value):
         self.c=value

 if __name__ == '__main__':
     app = QApplication(sys.argv)
     demo = Demo()

     print(demo.color)
     demo.color=QColor(90,90,90)
     print(demo.color)

     demo.show()
     sys.exit(app.exec_())

方法二  函数法

 import sys
 from PyQt5.QtWidgets import QApplication, QWidget
 from PyQt5.QtGui import QColor
 from PyQt5.QtCore import pyqtProperty,Qt

 class Demo(QWidget):
     def __init__(self):
         super(Demo, self).__init__()
         self.c=QColor(Qt.red)

     def get_color(self):
         return self.c

     def set_color(self, value):
         self.c = value

     color = pyqtProperty(QColor, fget=get_color, fset=set_color) #添加属性
     #第一个参数要填属性的数据类型

 if __name__ == '__main__':
     app = QApplication(sys.argv)
     demo = Demo()

     print(demo.color)
     demo.color=QColor(90,90,90)
     print(demo.color)

     demo.show()
     sys.exit(app.exec_())