本文展示了 pyqt5 信号槽的装饰器实现方式(借鉴自 eirc6)
一个简单的例子。实现功能：两个数相加，显示结果。如图
两个文件，第一个是界面文件 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
QtCore.QMetaObject.connectSlotsByName(Form) # 必须
说明：1. 界面部件需要setObjectname ; 2. 最后必须 QtCore.QMetaObject.connectSlotsByName(Form)
第二个是逻辑文件 calc.py
# calc.pyfrom PyQt5.QtCore
import pyqtSlot
from PyQt5.QtWidgets
import QApplication, QWidget
from ui_calc
import Ui_Calc
# 方式一
class MyCalc(QWidget):
def __init__(self, parent=
None):
super().__init__(parent)
self.ui =
Ui_Calc()
self.ui.setupUi(self)
@pyqtSlot(int)
def on_inputSpinBox1_valueChanged(self, value):
self.ui.outputWidget.setText(str(value +
self.ui.inputSpinBox2.value()))
@pyqtSlot(int)
def on_inputSpinBox2_valueChanged(self, value):
self.ui.outputWidget.setText(str(value +
self.ui.inputSpinBox1.value()))# 方式二
class MyCalc2(QWidget, Ui_Calc):
def __init__(self, parent=
None):
super().__init__(parent)
self.setupUi(self)
@pyqtSlot(int)
def on_inputSpinBox1_valueChanged(self, value):
self.outputWidget.setText(str(value +
self.inputSpinBox2.value()))
@pyqtSlot(int)
def on_inputSpinBox2_valueChanged(self, value):
self.outputWidget.setText(str(value +
self.inputSpinBox1.value()))if __name__ ==
'__main__':
import sys
app =
QApplication(sys.argv)
win =
MyCalc() # win = MyCalc2()
win.show()
sys.exit(app.exec_())
转载于:https://www.cnblogs.com/hhh5460/p/5390999.html
相关资源：PyQt5信号槽与界面分离
