pyQT5 实现窗体之间传值的示例

# -*- coding: utf-8 -*- from PyQt5 import QtWidgetsfrom main_windows import Ui_MainWindowimport sysfrom wid_defs import my_widgetsfrom dlg_defs import my_Dialog class MyWindow(QtWidgets.QMainWindow,Ui_MainWindow):  def __init__(self):    super(MyWindow,self).__init__()    self.setupUi(self)      def openDialog(self):     self.dlg = my_Dialog()     www = self.textEdit.toPlainText()     self.dlg.setT(www)     self.dlg.exec_()        def openWidget(self):    self.wid = my_widgets()    self.wid.pushButton.clicked.connect(self.GetText)    www= self.textEdit.toPlainText()    self.wid.setT(www)        self.wid.show() #close wid form          def GetText(self):    self.textEdit.setText(self.wid.textEdit.toPlainText())       self.wid.close()     if __name__ == "__main__":  app = QtWidgets.QApplication(sys.argv)  mainWindow = MyWindow()  mainWindow.show()  sys.exit(app.exec_())    

def slot3(self):     self.dlg = my_Dialog()     www = self.textEdit.toPlainText()     self.dlg.setT(www)     self.dlg.exec_()  

  def slot2(self):    #widgetForm    self.wid = my_widgets()    self.wid.pushButton.clicked.connect(self.GetLine)        #dialog    self.dlg = my_Dialog()    self.dlg.buttonBox.accepted.connect(self.GetLine)        www= self.textEdit.toPlainText()    self.wid.setT(www)        self.wid.show()   def GetText(self):    self.textEdit.setText(self.wid.textEdit.toPlainText())

 def GetLine(self):    self.textEdit.setText(self.dlg.textEdit.toPlainText())