Python GUI教程：信号与槽装饰器@pyqtSlot()

一个简单的例子。实现功能：两个数相加，显示结果。如图

 

一、界面文件 ui_calc.py

# ui_calc.py

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_Calc(object):
    
    def setupUi(self, Form):
        self.inputSpinBox1 = QtWidgets.QSpinBox(Form)
        self.inputSpinBox1.setGeometry(QtCore.QRect(1, 26, 46, 25))
        self.inputSpinBox1.setObjectName("inputSpinBox1") # 必须
        
        self.inputSpinBox2 = QtWidgets.QSpinBox(Form)
        self.inputSpinBox2.setGeometry(QtCore.QRect(70, 26, 46, 25))
        self.inputSpinBox2.setObjectName("inputSpinBox2") # 必须
        
        self.outputWidget = QtWidgets.QLabel(Form)
        self.outputWidget.setGeometry(QtCore.QRect(140, 24, 36, 27))
        self.outputWidget.setObjectName("outputWidget") # 必须