python之PyQt4 如何通过单击按钮使用多处理

我一直在尝试使用多进程运行命令，因为在使用 while 循环时 GUI 会卡住。我需要调用 pyqt4 类中的函数。或者更好的处理多进程的方法 Qthread 会帮助我吗？我已经搜索了很多教程，但我不知道该怎么做。

我试过了，效果不错。问题是我无法将 QeditText 的输入传递给该函数，如果有办法的话，它会为我想做的事情工作。

import sys 
import multiprocessing 
import time 
from PyQt4 import QtCore, QtGui 
from form import Ui_Dialog 
 
 
def worker(): 
    t = MyDialog() 
    name = multiprocessing.current_process().name 
    print name, 'Starting',  t.self.ui.rtmpIN.toPlainText() 
    time.sleep(2) 
    print name, 'Exiting' 
 
class MyDialog(QtGui.QDialog): 
    def __init__(self, parent=None): 
        QtGui.QWidget.__init__(self, parent) 
        self.ui = Ui_Dialog() 
        self.ui.setupUi(self) 
        self.ui.startButton.clicked.connect(self.start) 
        self.ui.stopButton.clicked.connect(self.stop) 
        self.ui.comboBox.addItem("player 1") 
        self.ui.comboBox.addItem("player 2") 
        self.ui.comboBox.addItem("player 3") 
        #self.ui.comboBox.currentIndexChanged.connect(self.selectionchange) 
 
    def selectionchange(self,i): 
        print self.ui.comboBox.currentText() 
 
    def start(self): 
        worker_2 = multiprocessing.Process(target=worker)  # use default name 
        worker_2.start() 
        print "in:  ", self.ui.rtmpIN.toPlainText() 
        print "out: ", self.ui.outPUT.toPlainText() 
        print str(self.ui.comboBox.currentText()) 
 
        if self.ui.quialityBox.isChecked(): 
            q = "Streaming started" + "\n" + "quality: " + self.ui.Setquality.toPlainText() + "\n" + "player: " + str(self.ui.comboBox.currentText()) 
            self.ui.theLog.append(q) 
            #print self.ui.Setquality.toPlainText() 
        else: 
            p = "Streaming" + "\n" + "player: " + str(self.ui.comboBox.currentText()) + "\n" 
            self.ui.theLog.append(p) 
 
    def stop(self): 
        print 'stop pressed.' 
        self.close() 
 
 
 
 
if __name__ == "__main__": 
        app = QtGui.QApplication(sys.argv) 
        myapp = MyDialog() 
        myapp.show() 
        sys.exit(app.exec_()) 

我需要能够从中获取数据，在辅助函数中，有什么办法吗？

print "in:  ", self.ui.rtmpIN.toPlainText() 
print "out: ", self.ui.outPUT.toPlainText() 

编辑:忘记了这里的 form.py http://pastebin.com/HksuSjkt

请您参考如下方法:

这是我的解决方案:

from PyQt4.QtCore import QThread 
 
class Worker(QThread): 
    def __init__(self, parent=None): 
        super(Worker, self).__init__(parent) 
        self.textin = "" 
        self.textout = "" 
        self.okay = True 
 
    def setTextIn(self, text): 
        self.textin = text 
 
    def setTextOut(self, text): 
        self.textout = text 
 
    def run(self): 
        while self.okay: 
            print('IN:' + self.textin) 
            print('OUT:' + self.textout) 
            time.sleep(2) 
 
    def stop(self): 
        self.okay = False 
 
 
class MyDialog(QtGui.QDialog): 
    def __init__(self, parent=None): 
        QtGui.QWidget.__init__(self, parent) 
        self.worker = Worker(self) 
        self.ui = Ui_Dialog() 
        self.ui.setupUi(self) 
        self.ui.rtmpIN.textChanged.connect(self.changeText) 
        self.ui.outPUT.textChanged.connect(self.changeText) 
        self.ui.startButton.clicked.connect(self.start) 
        self.ui.stopButton.clicked.connect(self.stop) 
        self.ui.comboBox.addItem("player 1") 
        self.ui.comboBox.addItem("player 2") 
        self.ui.comboBox.addItem("player 3") 
 
    def selectionchange(self,i): 
        print(self.ui.comboBox.currentText()) 
 
    def start(self): 
        self.worker.start() 
        print("in:  "+self.ui.rtmpIN.toPlainText()) 
        print("out: "+self.ui.outPUT.toPlainText()) 
        print(self.ui.comboBox.currentText()) 
 
        if self.ui.quialityBox.isChecked(): 
            q = "Streaming started" + "\n" + "quality: " + self.ui.Setquality.toPlainText() + "\n" + "player: " + str(self.ui.comboBox.currentText()) 
            self.ui.theLog.append(q) 
        else: 
            p = "Streaming" + "\n" + "player: " + str(self.ui.comboBox.currentText()) + "\n" 
            self.ui.theLog.append(p) 
 
    def changeText(self): 
        self.worker.setTextIn(self.ui.rtmpIN.toPlainText()) 
        self.worker.setTextOut(self.ui.outPUT.toPlainText()) 
 
    def stop(self): 
        self.worker.stop() 
        self.worker.quit() 
        self.worker.wait() 
        print('stop pressed.') 
        self.close() 
 
    def closeEvent(self, event): 
        self.worker.stop() 
        self.worker.quit() 
        self.worker.wait() 
        QtGui.QDialog.closeEvent(self, event) 
 
 
if __name__ == "__main__": 
        app = QtGui.QApplication(sys.argv) 
        myapp = MyDialog() 
        myapp.show() 
        sys.exit(app.exec_()) 

输出: