PyQt4 Web工具包有问题。按钮连接到功能

# -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'ApacheUI.ui' # # Created by: PyQt4 UI code generator 4.11.4 # # WARNING! All changes made in this file will be lost! from PyQt4 import QtCore, QtGui from PyQt4 import QtWebKit try: _fromUtf8 = QtCore.QString.fromUtf8 except AttributeError: def _fromUtf8(s): return s try: _encoding = QtGui.QApplication.UnicodeUTF8 def _translate(context, text, disambig): return QtGui.QApplication.translate(context, text, disambig, _encoding) except AttributeError: def _translate(context, text, disambig): return QtGui.QApplication.translate(context, text, disambig) class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName(_fromUtf8("MainWindow")) MainWindow.resize(720, 600) MainWindow.setAcceptDrops(False) icon = QtGui.QIcon() icon.addPixmap(QtGui.QPixmap(_fromUtf8("Apache.ico")), QtGui.QIcon.Normal, QtGui.QIcon.Off) MainWindow.setWindowIcon(icon) MainWindow.setAutoFillBackground(False) MainWindow.setDocumentMode(False) MainWindow.setTabShape(QtGui.QTabWidget.Rounded) self.centralwidget = QtGui.QWidget(MainWindow) self.centralwidget.setObjectName(_fromUtf8("centralwidget")) self.gridLayout = QtGui.QGridLayout(self.centralwidget) self.gridLayout.setObjectName(_fromUtf8("gridLayout")) self.Forward = QtGui.QPushButton(self.centralwidget) self.Forward.setObjectName(_fromUtf8("Forward")) self.Forward.clicked.connect(lambda: self.Forward) self.gridLayout.addWidget(self.Forward, 0, 1, 1, 1) self.Back = QtGui.QPushButton(self.centralwidget) self.Back.setObjectName(_fromUtf8("Back")) self.Back.clicked.connect(lambda: self.Back) self.gridLayout.addWidget(self.Back, 0, 0, 1, 1) self.Reload = QtGui.QPushButton(self.centralwidget) self.Reload.setObjectName(_fromUtf8("Reload")) self.Reload.clicked.connect(lambda: self.Reload) self.gridLayout.addWidget(self.Reload, 0, 2, 1, 1) self.enter = QtGui.QPushButton(self.centralwidget) self.gridLayout.addWidget(self.enter, 0, 0, 0, 0) self.enter.resize(0, 0) self.enter.clicked.connect(self.Enter) self.enter.setShortcut("Return") self.UrlBar = QtGui.QLineEdit(self.centralwidget) self.UrlBar.setObjectName(_fromUtf8("UrlBar")) self.gridLayout.addWidget(self.UrlBar, 0, 3, 1, 1) self.webView = QtWebKit.QWebView(self.centralwidget) self.webView.setUrl(QtCore.QUrl(_fromUtf8("about:blank"))) self.webView.setObjectName(_fromUtf8("webView")) self.gridLayout.addWidget(self.webView, 1, 0, 1, 5) MainWindow.setCentralWidget(self.centralwidget) self.webView.urlChanged.connect(self.UrlChanged) self.menubar = QtGui.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 720, 21)) self.menubar.setObjectName(_fromUtf8("menubar")) self.menuOptions = QtGui.QMenu(self.menubar) self.menuOptions.setObjectName(_fromUtf8("menuOptions")) self.menuSearch_Engine = QtGui.QMenu(self.menuOptions) self.menuSearch_Engine.setObjectName(_fromUtf8("menuSearch_Engine")) MainWindow.setMenuBar(self.menubar) self.statusbar = QtGui.QStatusBar(MainWindow) self.statusbar.setObjectName(_fromUtf8("statusbar")) MainWindow.setStatusBar(self.statusbar) self.actionSettings = QtGui.QAction(MainWindow) self.actionSettings.setObjectName(_fromUtf8("actionSettings")) self.actionDuck_Duck_Go = QtGui.QAction(MainWindow) self.actionDuck_Duck_Go.setObjectName(_fromUtf8("actionDuck_Duck_Go")) self.actionGoogle = QtGui.QAction(MainWindow) self.actionGoogle.setObjectName(_fromUtf8("actionGoogle")) self.actionBing = QtGui.QAction(MainWindow) self.actionBing.setObjectName(_fromUtf8("actionBing")) self.actionQuora = QtGui.QAction(MainWindow) self.actionQuora.setObjectName(_fromUtf8("actionQuora")) self.actionDogpile = QtGui.QAction(MainWindow) self.actionDogpile.setObjectName(_fromUtf8("actionDogpile")) self.actionVimeo = QtGui.QAction(MainWindow) self.actionVimeo.setObjectName(_fromUtf8("actionVimeo")) self.actionBoardreader = QtGui.QAction(MainWindow) self.actionBoardreader.setObjectName(_fromUtf8("actionBoardreader")) self.actionAsk = QtGui.QAction(MainWindow) self.actionAsk.setObjectName(_fromUtf8("actionAsk")) self.actionSlide_Share = QtGui.QAction(MainWindow) self.actionSlide_Share.setObjectName(_fromUtf8("actionSlide_Share")) self.actionAddict_o_matic = QtGui.QAction(MainWindow) self.actionAddict_o_matic.setObjectName(_fromUtf8("actionAddict_o_matic")) self.actionCreative_Commons = QtGui.QAction(MainWindow) self.actionCreative_Commons.setObjectName(_fromUtf8("actionCreative_Commons")) self.actionGiphy = QtGui.QAction(MainWindow) self.actionGiphy.setObjectName(_fromUtf8("actionGiphy")) self.menuSearch_Engine.addAction(self.actionDuck_Duck_Go) self.menuSearch_Engine.addAction(self.actionGoogle) self.menuSearch_Engine.addAction(self.actionBing) self.menuSearch_Engine.addAction(self.actionQuora) self.menuSearch_Engine.addAction(self.actionDogpile) self.menuSearch_Engine.addAction(self.actionVimeo) self.menuSearch_Engine.addAction(self.actionBoardreader) self.menuSearch_Engine.addAction(self.actionAsk) self.menuSearch_Engine.addAction(self.actionSlide_Share) self.menuSearch_Engine.addAction(self.actionAddict_o_matic) self.menuSearch_Engine.addAction(self.actionCreative_Commons) self.menuSearch_Engine.addAction(self.actionGiphy) self.menuOptions.addAction(self.menuSearch_Engine.menuAction()) self.menubar.addAction(self.menuOptions.menuAction()) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): MainWindow.setWindowTitle(_translate("MainWindow", "Apache", None)) self.Forward.setText(_translate("MainWindow", ">", None)) self.Back.setText(_translate("MainWindow", "<", None)) self.Reload.setText(_translate("MainWindow", "↻", None)) self.menuOptions.setTitle(_translate("MainWindow", "Options", None)) self.menuSearch_Engine.setTitle(_translate("MainWindow", "Search Engine", None)) self.actionSettings.setText(_translate("MainWindow", "Settings", None)) self.actionDuck_Duck_Go.setText(_translate("MainWindow", "Duck Duck Go", None)) self.actionGoogle.setText(_translate("MainWindow", "Google", None)) self.actionBing.setText(_translate("MainWindow", "Bing", None)) self.actionQuora.setText(_translate("MainWindow", "Quora", None)) self.actionDogpile.setText(_translate("MainWindow", "Dogpile", None)) self.actionVimeo.setText(_translate("MainWindow", "Vimeo", None)) self.actionBoardreader.setText(_translate("MainWindow", "Boardreader", None)) self.actionAsk.setText(_translate("MainWindow", "Ask", None)) self.actionSlide_Share.setText(_translate("MainWindow", "Slide Share", None)) self.actionAddict_o_matic.setText(_translate("MainWindow", "Addict-o-matic", None)) self.actionCreative_Commons.setText(_translate("MainWindow", "Creative Commons", None)) self.actionGiphy.setText(_translate("MainWindow", "Giphy", None)) def WebPlayer(self): url = "" self.googleLink = 'https://www.google.com' self.duckduckgoLink = 'https://duckduckgo.com/' self.duckduckgoSearch = 'https://duckduckgo.com/?q=' self.bingLink = 'https://www.bing.com/' self.quoraLink = 'https://www.quora.com/' self.dogpileLink = 'http://www.dogpile.com/' self.vimeoLink = 'https://vimeo.com/' self.boardreaderLink = 'https://www.boardreader.com/' self.askLink = 'http://www.ask.com/' self.slideshareLink = 'http://www.slideshare.net/' self.addictomaticLink = 'http://addictomatic.com/' self.creationcommonsLink = 'https://search.creativecommons.org/' self.giphyLink = 'http://giphy.com/' self.searchPage = self.duckduckgoLink self.searchEngine = self.duckduckgoSearch def Enter(self): global url url = self.UrlBar.text() http = "http://" www = "www." if www in url and http not in url: url = http + url elif "." not in url: url = self.searchEngine + url elif http in url and www not in url: url = url[:7] + www + url[7:] elif http and www not in url: url = http + www + url self.UrlBar.setText(url) self.webView.load(QtCore.QUrl(url)) def Reload(self): self.web.reload() def Back(self): self.webView.back() def Forward(self): self.web.forward() def UrlChanged(self): self.UrlBar.setText(self.webView.url().toString()) if __name__ == "__main__": import sys app = QtGui.QApplication(sys.argv) MainWindow = QtGui.QMainWindow() ui = Ui_MainWindow() ui.setupUi(MainWindow) MainWindow.show() sys.exit(app.exec_())

1条回答

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1楼 · 发布于 2024-05-01 23:52:13

首先，您对按钮和插槽使用相同的名称，因此当调用setupUi时，前者将隐藏后者。你知道吗

其次，lambda实际上并不调用slot，这就解释了为什么“什么都没发生”。当然，您无论如何也不能真正调用它，因为它被一些不可调用的东西（即对按钮的引用）所遮蔽。请注意，这也解释了您在问题注释中提到的错误消息。你知道吗

我建议您将所有插槽重命名为handleReload、handleForward等，这样名称就不会冲突。然后应按如下方式连接插槽：

    self.Forward.clicked.connect(self.handleForward)

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