Question

难以显示窗口/无法连接到服务器，具体取决于Reactor.run（）的位置

如果我在 retranslateUi（自我，MainWindow）之前或之后放置reactor.run（），则聊天服务器会将连接记录为成功，但不会加载UI。如果将 reactor.run（）放在 sys.exit（app.exec _（））之后，即使UI已加载，客户端也无法连接。

最佳解决方案是什么？

from __future__ import print_function
from PyQt5 import QtCore, QtGui, QtWidgets
from twisted.internet import protocol
from twisted.protocols.basic import LineReceiver
from twisted.internet import reactor

from twisted.application import service, internet

class Ui_MainWindow(object):

    #Note actual code lives here

    self.retranslateUi(MainWindow)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)

    #prepare the chat 
    reactor.connectTCP("localhost",1025,ChatClientFactory())
    reactor.run()

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.lineEdit_2.setText(_translate("MainWindow", "    Search "))
        self.pushButton.setText(_translate("MainWindow", "Send"))





class ChatClient(LineReceiver):

    def __init__(self, factory):
        self.factory = factory

    def lineReceived(self, data):
        self.factory.text_from_patient = "{:>10}".format(data) # store the data so we can write to textedit

        self.textEdit.appendPlainText("\n"+ self.factory.text_from_patient)


class ChatClientFactory(protocol.ClientFactory):
    text_from_patient = " " # text to contain data sent from the user

    def buildProtocol(self, addr):
        return ChatClient(self)


    def clientConnectionFailed(self, connector, reason):
        reactor.stop()

    def clientConnectionLost(self, connector, reason):
        reactor.stop()


if __name__ == "__main__":
    import sys

    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()


    sys.exit(app.exec_())

Answer 1

这是我在文档中找到的。

Twisted可以在QApplication.exec_()之后通过调用来初始化 reactor.runReturn()。呼叫reactor.stop()会解除扭曲，但保持您的Qt应用程序运行。

您的执行代码应如下所示

gui_app.exec_()
twisted.internet.reactor.runReturn()

Answer 2

按常规方式使用qt5reactor和reactor.run。

在哪里将Reactor.run（）放在PyQt应用中？

2 个答案: