pyqt5 添加属性-类方法用属性形式访问

方法一装饰器法

 1 import sys
 2 from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QHBoxLayout,QLabel
 3 from PyQt5.QtGui import QColor
 4 from PyQt5.QtCore import pyqtProperty,Qt
 5 
 6 
 7 class Demo(QWidget):
 8     def __init__(self):
 9         super(Demo, self).__init__()
10         self.c=QColor(Qt.red)
11 
12     @pyqtProperty(QColor)   #获取属性,注意要传入属性的类型
13     def color(self):
14         return self.c
15 
16     @color.setter          #设置属性
17     def color(self,value):
18         self.c=value
19 
20 
21 if __name__ == '__main__':
22     app = QApplication(sys.argv)
23     demo = Demo()
24 
25     print(demo.color)
26     demo.color=QColor(90,90,90)
27     print(demo.color)
28 
29     demo.show()
30     sys.exit(app.exec_())

方法二函数法

 1 import sys
 2 from PyQt5.QtWidgets import QApplication, QWidget
 3 from PyQt5.QtGui import QColor
 4 from PyQt5.QtCore import pyqtProperty,Qt
 5 
 6 class Demo(QWidget):
 7     def __init__(self):
 8         super(Demo, self).__init__()
 9         self.c=QColor(Qt.red)
10 
11     def get_color(self):
12         return self.c
13 
14     def set_color(self, value):
15         self.c = value
16 
17     color = pyqtProperty(QColor, fget=get_color, fset=set_color) #添加属性
18     #第一个参数要填属性的数据类型
19 
20 
21 if __name__ == '__main__':
22     app = QApplication(sys.argv)
23     demo = Demo()
24 
25     print(demo.color)
26     demo.color=QColor(90,90,90)
27     print(demo.color)
28 
29     demo.show()
30     sys.exit(app.exec_())