通过导入PyQt5 Ui向按钮添加功能

Question

我有一个名为guiNext.py和next.py的PyQt5 Ui，正在刷新用户界面。如何向UI按钮添加功能？这就是我所拥有的，当我运行next.py并单击HELLO按钮时，什么也没有发生。

guiNext.py：

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'guiNext_001.ui'
#
# Created by: PyQt5 UI code generator 5.6
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_nextGui(object):
    def setupUi(self, nextGui):
        nextGui.setObjectName("nextGui")
        nextGui.resize(201, 111)
        nextGui.setMinimumSize(QtCore.QSize(201, 111))
        nextGui.setMaximumSize(QtCore.QSize(201, 111))
        self.centralwidget = QtWidgets.QWidget(nextGui)
        self.centralwidget.setObjectName("centralwidget")
        self.helloBtn = QtWidgets.QPushButton(self.centralwidget)
        self.helloBtn.setGeometry(QtCore.QRect(10, 10, 181, 91))
        self.helloBtn.setObjectName("helloBtn")
        nextGui.setCentralWidget(self.centralwidget)

        self.retranslateUi(nextGui)
        QtCore.QMetaObject.connectSlotsByName(nextGui)

    def retranslateUi(self, nextGui):
        _translate = QtCore.QCoreApplication.translate
        nextGui.setWindowTitle(_translate("nextGui", "MainWindow"))
        self.helloBtn.setText(_translate("nextGui", "HELLO"))

这是主文件next.py：

#!usr/bin/env python
#-*- coding: utf-8 -*-

from PyQt5 import QtCore, QtGui, QtWidgets
from guiNext import Ui_nextGui

class mainProgram(Ui_nextGui):
    def __init__(self, parent=None):
        Ui_nextGui.__init__(self)
        self.setupUi(nextGui)
        self.helloBtn.clicked.connect(self.hello)

    def hello(self):
        print ("HELLO")

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    nextGui = QtWidgets.QMainWindow()
    ui = Ui_nextGui()
    ui.setupUi(nextGui)
    nextGui.show()
    sys.exit(app.exec_())

Answer 1

程序的结构不太正确。有几种使用Qt Designer创建的ui文件的方法。多重继承方法可能是最直观的。这是您的代码应如下所示：

from PyQt5 import QtCore, QtGui, QtWidgets
from guiNext import Ui_nextGui

class mainProgram(QtWidgets.QMainWindow, Ui_nextGui):
    def __init__(self, parent=None):
        super(mainProgram, self).__init__(parent)
        self.setupUi(self)
        self.helloBtn.clicked.connect(self.hello)

    def hello(self):
        print ("HELLO")

if __name__ == "__main__":

    import sys
    app = QtWidgets.QApplication(sys.argv)
    nextGui = mainProgram()
    nextGui.show()
    sys.exit(app.exec_())