pyqt 多窗口之间的相互调用方法

2019-11-25 12:42:32

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* 在编程开发中，一个程序不可避免的需要多窗口操作来实现具体的功能。

实现此功能的基本步骤（以三个窗口为例，使用主窗口调用其它两个窗口）

# 主窗口from PyQt5 import QtCore, QtGui, QtWidgets class 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(70, 180, 75, 23))    self.pushButton.setObjectName("pushButton")     self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)    self.pushButton_2.setGeometry(QtCore.QRect(250, 180, 75, 23))    self.pushButton_2.setObjectName("pushButton_2")     MainWindow.setCentralWidget(self.centralwidget)    self.menubar = QtWidgets.QMenuBar(MainWindow)    self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))    self.menubar.setObjectName("menubar")    MainWindow.setMenuBar(self.menubar)    self.statusbar = QtWidgets.QStatusBar(MainWindow)    self.statusbar.setObjectName("statusbar")    MainWindow.setStatusBar(self.statusbar)     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", "打开窗口1"))    self.pushButton_2.setText(_translate("MainWindow", "打开窗口2 ")) # 窗口1class Ui_Dialog(object):  def setupUi(self, Dialog):    Dialog.setObjectName("Dialog")    Dialog.resize(400, 300)    self.buttonBox = QtWidgets.QDialogButtonBox(Dialog)    self.buttonBox.setGeometry(QtCore.QRect(30, 240, 341, 32))    self.buttonBox.setOrientation(QtCore.Qt.Horizontal)    self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)    self.buttonBox.setObjectName("buttonBox")    self.label = QtWidgets.QLabel(Dialog)    self.label.setGeometry(QtCore.QRect(140, 100, 54, 12))    self.label.setObjectName("label")     self.retranslateUi(Dialog)    self.buttonBox.accepted.connect(Dialog.accept)    self.buttonBox.rejected.connect(Dialog.reject)    QtCore.QMetaObject.connectSlotsByName(Dialog)   def retranslateUi(self, Dialog):    _translate = QtCore.QCoreApplication.translate    Dialog.setWindowTitle(_translate("Dialog", "Dialog"))    self.label.setText(_translate("Dialog", "这是窗口1"))# 窗口2 class Ui_Form(object):  def setupUi(self, Form):    Form.setObjectName("Form")    Form.resize(400, 300)    self.label = QtWidgets.QLabel(Form)    self.label.setGeometry(QtCore.QRect(140, 140, 54, 12))    self.label.setObjectName("label")     self.retranslateUi(Form)    QtCore.QMetaObject.connectSlotsByName(Form)   def retranslateUi(self, Form):    _translate = QtCore.QCoreApplication.translate    Form.setWindowTitle(_translate("Form", "Form"))    self.label.setText(_translate("Form", "这是窗口2"))

主程序入口：

# 主程序class MainWindow(QMainWindow, untitled.Ui_MainWindow):  def __init__(self):    super(MainWindow, self).__init__()    self.setupUi(self)    self.window2 = Ui_Dialog()    self.window2.setupUi()    self.window3 = Ui_Form()    self.window3.setupUi()    self.pushButton.clicked.connect(self.window2.show)# 绑定窗口2     self.pushButton_2.clicked.connect(self.window3.show) # 绑定窗口3  if __name__ == '__main__':  app = QApplication(sys.argv)  MainWindow = MainWindow()  MainWindow.show()  sys.exit(app.exec_())

以上实现主窗口通过按钮弹出窗口1和窗口2

下面实现通过窗口按钮打开文件资源管理器，实现获取文件相关信息的功能：

1. 在主窗口中添加一个按钮：

class Ui_MainWindow(object):  def setupUi(self, MainWindow):    ......    self.pushButton_3 = QtWidgets.QPushButton(self.centralwidget)    self.pushButton_3.setGeometry(QtCore.QRect(420, 180, 75, 23))    self.pushButton_3.setObjectName("pushButton_3")  def retranslateUi(self, MainWindow):    ......    self.pushButton_3.setText(_translate("MainWindow", "打开目录"))

2.主程序中添加：

# 主程序class MainWindow(QMainWindow, untitled.Ui_MainWindow):  def __init__(self):    super(MainWindow, self).__init__()    self.setupUi(self)    self.window2 = Ui_Dialog()    self.Window2.setupUi()    self.window3 = Ui_Form()    self.Window3.setupUi()    self.pushButton.clicked.connect(self.window2.show)# 绑定窗口2     self.pushButton_2.clicked.connect(self.window3.show) # 绑定窗口3     self.pushButton_3.clicked.connect(self.gefilename) # 新增加的  # 新增加的  def gefilename(self):    filename = QFileDialog.getOpenFileName()    return filename  if __name__ == '__main__':  app = QApplication(sys.argv)  MainWindow = MainWindow()  MainWindow.show()  sys.exit(app.exec_())

即可完成上述功能。

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