关于 PyQt 与 Qt Designer

为什么我在 Qt Designer 中可以实现自适应窗口/p>

生成代码运行后还是不能自适应

 def setupUi(self, MainWindow): MainWindow.setObjectName(_fromUtf8("MainWindow")) MainWindow.resize(1042, 800) self.centralwidget = QtGui.QWidget(MainWindow) self.centralwidget.setObjectName(_fromUtf8("centralwidget")) self.verticalLayout_2 = QtGui.QVBoxLayout(self.centralwidget) self.verticalLayout_2.setObjectName(_fromUtf8("verticalLayout_2")) self.horizOntalLayout= QtGui.QHBoxLayout() self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout")) self.verticalLayout = QtGui.QVBoxLayout() self.verticalLayout.setObjectName(_fromUtf8("verticalLayout")) self.pushButton = QtGui.QPushButton(self.centralwidget) self.pushButton.setObjectName(_fromUtf8("pushButton")) self.verticalLayout.addWidget(self.pushButton) self.pushButton_2 = QtGui.QPushButton(self.centralwidget) self.pushButton_2.setObjectName(_fromUtf8("pushButton_2")) self.verticalLayout.addWidget(self.pushButton_2) self.pushButton_3 = QtGui.QPushButton(self.centralwidget) self.pushButton_3.setObjectName(_fromUtf8("pushButton_3")) self.verticalLayout.addWidget(self.pushButton_3) self.horizontalLayout.addLayout(self.verticalLayout) self.listView = QtGui.QListView(self.centralwidget) self.listView.setObjectName(_fromUtf8("listView")) self.horizontalLayout.addWidget(self.listView) self.verticalLayout_2.addLayout(self.horizontalLayout) # MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtGui.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 1042, 26)) self.menubar.setObjectName(_fromUtf8("menubar")) # MainWindow.setMenuBar(self.menubar) self.statusbar = QtGui.QStatusBar(MainWindow) self.statusbar.setObjectName(_fromUtf8("statusbar")) # MainWindow.setStatusBar(self.statusbar) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None)) self.pushButton.setText(_translate("MainWindow", "PushButton", None)) self.pushButton_2.setText(_translate("MainWindow", "PushButton", None)) self.pushButton_3.setText(_translate("MainWindow", "PushButton", None))