PyQt，QThread通信，更新QLineEdit提交

问题描述：

我有一段代码正在运行，两个线程之间的通信和状态。我遇到了如何根据发射值更新QLineEdit字段的问题。到目前为止，它可以很好地处理注释行，但这不是我正在寻找的...如何修改show_process函数来完成这项工作...有些帮助会比欢迎的更好？PyQt，QThread通信，更新QLineEdit提交

import sys, time 
from PyQt4 import QtGui, QtCore 

class Window(QtGui.QMainWindow): 
    def __init__(self): 
     super(Window, self).__init__() 
     self.setGeometry(50, 50, 500, 200) 
     self.setWindowTitle("TEST APP!") 
     self.home() 

    def Label(self, name, width, length, fontSize) : 
     label_name = QtGui.QLabel(name, self) 
     label_name.move(width,length) 
     label_font = label_name.font() 
     label_font.setPointSize(fontSize) 
     label_name.setFont(label_font) 

    def Field(self, TrueFalse, width, length, startText) : 
     field_name = QtGui.QLineEdit(self) 
     field_name.setDisabled(TrueFalse) 
     field_name.move(width, length) 
     field_name.setAlignment(QtCore.Qt.AlignCenter) 
     field_name.setText(startText) 

    def home(self): 
     self.Label('TEST1', 10, 60, 10) 
     self.Label('TEST2', 10, 120, 10) 
     self.Field(True, 130, 60, 'Ready') # first one 
     self.Field(True, 130, 120, 'Ready') # second one 

     self.start = QtGui.QPushButton("start", self) 
     self.start.clicked.connect(self.startPressed) 
     self.start.move(260, 20) 
     self.stop = QtGui.QPushButton("Stop", self) 
     self.stop.clicked.connect(self.stopPressed) 
     self.stop.move(380, 20) 

     self.show() 

    def startPressed(self): 
     self.get_thread_start = Start_Process('239.200.10.1', 50010) 
     self.stop.clicked.connect(self.get_thread_start.terminate) 
     self.start.setDisabled(True) 
     self.get_thread_start.updated.connect(self.show_process) 

     self.get_thread_start.start() 

    def stopPressed(self): 
     self.start.setDisabled(False) 
     self.get_thread_start.running = False 

    def show_process(self, data): 
     if str(data) == '1' : 
      #self.textbox1.setText(str(data)) 
      pass 
     elif str(data) == '0' : 
      #self.textbox2.setText(str(data)) 
      pass 

class Start_Process(QtCore.QThread): 
    updated = QtCore.pyqtSignal(int) 
    running = True 

    def __init__(self, mcstaddr, mcstport): 
     QtCore.QThread.__init__(self) 
     self.counter = 0 
     self.array = [1,0,1,0,1,0,1,0,1] 

    def run(self): 

     while self.running: 
      for i in self.array : 
       self.updated.emit(i) 
       time.sleep(0.5) 

def main(): 
    app = QtGui.QApplication(sys.argv) 
    GUI = Window() 
    GUI.show() 
    sys.exit(app.exec_()) 

if __name__ == '__main__': 
    main()

你的问题是，我已经执行你的代码去除意见，我有没有问题。 – eyllanesc

你想在show_process中做什么？ – eyllanesc

您正确完成了信号/插槽连接，您只需要保留对要更新的对象的引用。因此，在'Window.Label'方法的末尾添加'self.textbox = label_name'可以解决您的问题。 –

答

一个简单的方法来访问控件是创建一个容器，在这种情况下，我们选择字典：

self.field_dict = {}

然后我们添加在Field()方法我们添加QLineEdits到字典中。

def Field(self, TrueFalse, width, length, startText, key) : 
    field_name = QtGui.QLineEdit(self) 
    ... 
    self.field_dict[key] = field_name

然后我们可以通过密钥得到QLineEdit。

def show_process(self, key, data): 
    self.field_dict[key].setText(data)

完整的例子：

import sys, time 
from PyQt4 import QtGui, QtCore 

class Window(QtGui.QMainWindow): 
    def __init__(self): 
     super(Window, self).__init__() 
     self.setGeometry(50, 50, 500, 200) 
     self.setWindowTitle("TEST APP!") 
     self.field_dict = {} 
     self.home() 



    def Label(self, name, width, length, fontSize) : 
     label_name = QtGui.QLabel(name, self) 
     label_name.move(width,length) 
     label_font = label_name.font() 
     label_font.setPointSize(fontSize) 
     label_name.setFont(label_font) 

    def Field(self, TrueFalse, width, length, startText, key) : 
     field_name = QtGui.QLineEdit(self) 
     field_name.setDisabled(TrueFalse) 
     field_name.move(width, length) 
     field_name.setAlignment(QtCore.Qt.AlignCenter) 
     field_name.setText(startText) 
     self.field_dict[key] = field_name 

    def home(self): 
     self.Label('TEST1', 10, 60, 10) 
     self.Label('TEST2', 10, 120, 10) 
     self.Field(True, 130, 60, 'Ready', 0) # first one 
     self.Field(True, 130, 120, 'Ready', 1) # second one 

     self.start = QtGui.QPushButton("start", self) 
     self.start.clicked.connect(self.startPressed) 
     self.start.move(260, 20) 
     self.stop = QtGui.QPushButton("Stop", self) 
     self.stop.clicked.connect(self.stopPressed) 
     self.stop.move(380, 20) 

     self.show() 

    def startPressed(self): 
     self.get_thread_start = Start_Process('239.200.10.1', 50010) 
     self.stop.clicked.connect(self.get_thread_start.terminate) 
     self.start.setDisabled(True) 
     self.get_thread_start.updated.connect(self.show_process) 

     self.get_thread_start.start() 

    def stopPressed(self): 
     self.start.setDisabled(False) 
     self.get_thread_start.running = False 

    def show_process(self, key, data): 
     self.field_dict[key].setText(data) 

class Start_Process(QtCore.QThread): 
    updated = QtCore.pyqtSignal(int, str) 
    running = True 

    def __init__(self, mcstaddr, mcstport): 
     QtCore.QThread.__init__(self) 
     self.counter = 0 
     self.array = [1,0,1,0,1,0,1,0,1] 

    def run(self): 

     while self.running: 
      for i in self.array : 
       self.updated.emit(i, str(self.counter)) 
       time.sleep(0.5) 
       self.counter += 1 

def main(): 
    app = QtGui.QApplication(sys.argv) 
    GUI = Window() 
    GUI.show() 
    sys.exit(app.exec_()) 

if __name__ == '__main__': 
    main()

PyQt，QThread通信，更新QLineEdit提交

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