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_())