利用Qt中的ui文件生成PyQt5程序，自定義槽函數

 

1.在Qt Creator4.8.0上面設計如上.ui文件

2.點擊上方圖標，可以建立信號-槽連接，button_click()為自定義槽函數

 

3.設計目的：點擊clear按鈕，可消除上方文本框中的內容；點擊PushButton按鈕，彈出另一個自定義的窗口

4.在project目錄下找到.ui文件，生成.py文件（主頁有介紹）

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(453, 372)
        self.centralWidget = QtWidgets.QWidget(MainWindow)
        self.centralWidget.setObjectName("centralWidget")
        self.label = QtWidgets.QLabel(self.centralWidget)
        self.label.setGeometry(QtCore.QRect(80, 60, 54, 12))
        self.label.setObjectName("label")
        self.lineEdit = QtWidgets.QLineEdit(self.centralWidget)
        self.lineEdit.setGeometry(QtCore.QRect(150, 60, 113, 20))
        self.lineEdit.setObjectName("lineEdit")
        self.pushButton = QtWidgets.QPushButton(self.centralWidget)
        self.pushButton.setGeometry(QtCore.QRect(280, 60, 75, 23))
        self.pushButton.setObjectName("pushButton")
        self.label_2 = QtWidgets.QLabel(self.centralWidget)
        self.label_2.setGeometry(QtCore.QRect(80, 140, 54, 12))
        self.label_2.setObjectName("label_2")
        self.pushButton_2 = QtWidgets.QPushButton(self.centralWidget)
        self.pushButton_2.setGeometry(QtCore.QRect(280, 140, 75, 23))
        self.pushButton_2.setObjectName("pushButton_2")
        self.lineEdit_2 = QtWidgets.QLineEdit(self.centralWidget)
        self.lineEdit_2.setGeometry(QtCore.QRect(150, 140, 113, 20))
        self.lineEdit_2.setObjectName("lineEdit_2")
        MainWindow.setCentralWidget(self.centralWidget)
        self.menuBar = QtWidgets.QMenuBar(MainWindow)
        self.menuBar.setGeometry(QtCore.QRect(0, 0, 453, 23))
        self.menuBar.setObjectName("menuBar")
        MainWindow.setMenuBar(self.menuBar)
        self.mainToolBar = QtWidgets.QToolBar(MainWindow)
        self.mainToolBar.setObjectName("mainToolBar")
        MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
        self.statusBar = QtWidgets.QStatusBar(MainWindow)
        self.statusBar.setObjectName("statusBar")
        MainWindow.setStatusBar(self.statusBar)

        self.retranslateUi(MainWindow)
        self.pushButton.clicked.connect(self.lineEdit.clear)
　　　　 #self.pushButton_2.clicked.connect(MainWindow.button_click)#將pushButton_2的clicked信號和MainWindow的close槽連接
        self.pushButton_2.clicked.connect(self.button_click)#上面一句是生成的，要換成綁定自己設計的函數
　　　　　QtCore.QMetaObject.connectSlotsByName(MainWindow)

　　def retranslateUi(self, MainWindow):

 _translate = QtCore.QCoreApplication.translate
 MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
 self.label.setText(_translate("MainWindow", "Entertext"))
 self.pushButton.setText(_translate("MainWindow", "clear"))
 self.label_2.setText(_translate("MainWindow", "TextLabel"))
 self.pushButton_2.setText(_translate("MainWindow", "PushButton"))

 def button_click(self):
 QtWidgets.QMessageBox.information(self.pushButton_2, "標題", "這是第一個PyQt5 GUI程序")#這個函數是自己定義的

if __name__=="__main__":
 import sys
 app=QtWidgets.QApplication(sys.argv)
 formObj=QtWidgets.QMainWindow() #注意，這里和我們一開始創建窗體時使用的界面類型相同
 ui=Ui_MainWindow()
 ui.setupUi(formObj)
 formObj.show()
 sys.exit(app.exec_())

5.最終生成如下窗口

轉自：https://blog.csdn.net/xmnathan/article/details/51005789