pyqt5对用qt designer设计的窗体实现弹出子窗口的示例

# -*- coding: utf-8 -*-# Form implementation generated from reading ui file 'f.ui'## Created by: PyQt5 UI code generator 5.9## WARNING! All changes made in this file will be lost!from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_MainWindow(object):  def setupUi(self, MainWindow):    MainWindow.setObjectName("MainWindow")    MainWindow.resize(800, 600)    self.centralwidget = QtWidgets.QWidget(MainWindow)    self.centralwidget.setObjectName("centralwidget")    self.pushButton = QtWidgets.QPushButton(self.centralwidget)    self.pushButton.setGeometry(QtCore.QRect(80, 90, 75, 23))    self.pushButton.setObjectName("pushButton")    MainWindow.setCentralWidget(self.centralwidget)    self.retranslateUi(MainWindow)    QtCore.QMetaObject.connectSlotsByName(MainWindow)  def retranslateUi(self, MainWindow):    _translate = QtCore.QCoreApplication.translate    MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))    self.pushButton.setText(_translate("MainWindow", "PushButton"))

from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_Dialog(object):  def setupUi(self, Dialog):    Dialog.setObjectName("Dialog")    Dialog.resize(400, 300)    self.pushButton = QtWidgets.QPushButton(Dialog)    self.pushButton.setGeometry(QtCore.QRect(160, 100, 75, 23))    self.pushButton.setObjectName("pushButton")    Dialog.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint)  #设置窗体总显示在最上面    self.retranslateUi(Dialog)    QtCore.QMetaObject.connectSlotsByName(Dialog)  def retranslateUi(self, Dialog):    _translate = QtCore.QCoreApplication.translate    Dialog.setWindowTitle(_translate("Dialog", "Dialog"))    self.pushButton.setText(_translate("Dialog", "PushButton"))

import sysfrom PyQt5.QtWidgets import QApplication, QMainWindow, QDialogfrom dust.mainWindow import *from dust.childWindow import *if __name__ == '__main__':  app = QApplication(sys.argv)  #实例化主窗口   main = QMainWindow()   main_ui = Ui_MainWindow()  main_ui.setupUi(main )  #实例化子窗口   child = QDialog()        child_ui = Ui_Dialog()  child_ui.setupUi(child)    #按钮绑定事件  btn = main_ui.pushButton  btn.clicked.connect( child.show )     #显示  main.show()  sys.exit(app.exec_())

import sysfrom PyQt5.QtWidgets import QApplication, QMainWindow, QDialogfrom dust.mainWindow import *from dust.childWindow import *#mainWindowclass MyMainWindow(QMainWindow, Ui_MainWindow):  def __init__(self):    super(MyMainWindow,self).__init__()    self.setupUi(self)        self.setGeometry(0, 0, 1024, 600)    self.setWindowTitle('main window')              def paintEvent(self, event):    painter = QPainter(self)    pixmap = QPixmap("./image/bg.jpg")    painter.drawPixmap(self.rect(),pixmap)         def keyPressEvent(self, e):         if e.key() == Qt.Key_Escape:      self.close()class ChildWindow(QDialog, Ui_Dialog):  def __init__(self):    super(ChildWindow,self).__init__()    self.setupUi(self)        self.setWindowTitle('child window')        self.pushButton.clicked.connect( self.btnClick) #按钮事件绑定  def btnClick(self): #子窗体自定义事件    self.close()if __name__ == '__main__':  app = QApplication(sys.argv)     main = MyMainWindow()     child = ChildWindow()      btn = main.pushButton    #主窗体按钮事件绑定  btn.clicked.connect( child.show )     main.show()  sys.exit(app.exec_())