铁雪资源网 Design By www.gsvan.com

每点击一次按钮,弹出一个对话框(子窗口),同时开启一个子线程来执行任务并更新对话框内容,关闭对话框则关闭对应子线程

1. 建立一个简单的主界面和一个自定义对话框

PYQT5开启多个线程和窗口,多线程与多窗口的交互实例

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
 def setupUi(self, MainWindow):
  MainWindow.setObjectName("MainWindow")
  MainWindow.resize(327, 303)
  self.centralwidget = QtWidgets.QWidget(MainWindow)
  self.centralwidget.setObjectName("centralwidget")
  self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
  self.gridLayout.setObjectName("gridLayout")
  spacerItem = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
  self.gridLayout.addItem(spacerItem, 0, 0, 1, 1)
  self.pushButton = QtWidgets.QPushButton(self.centralwidget)
  self.pushButton.setObjectName("pushButton")
  self.gridLayout.addWidget(self.pushButton, 0, 1, 1, 1)
  spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
  self.gridLayout.addItem(spacerItem1, 0, 2, 1, 1)
  MainWindow.setCentralWidget(self.centralwidget)
  self.menubar = QtWidgets.QMenuBar(MainWindow)
  self.menubar.setGeometry(QtCore.QRect(0, 0, 327, 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)
  self.pushButton.clicked.connect(MainWindow.open_dialog)
  QtCore.QMetaObject.connectSlotsByName(MainWindow)

 def retranslateUi(self, MainWindow):
  _translate = QtCore.QCoreApplication.translate
  MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
  self.pushButton.setText(_translate("MainWindow", "多线程弹窗"))


class Ui_Dialog(object):
 def setupUi(self, Dialog):
  Dialog.setObjectName("Dialog")
  Dialog.resize(369, 128)
  self.gridLayout = QtWidgets.QGridLayout(Dialog)
  self.gridLayout.setObjectName("gridLayout")
  self.buttonBox = QtWidgets.QDialogButtonBox(Dialog)
  self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
  self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
  self.buttonBox.setObjectName("buttonBox")
  self.gridLayout.addWidget(self.buttonBox, 1, 0, 1, 1)
  self.progressBar = QtWidgets.QProgressBar(Dialog)
  self.progressBar.setProperty("value", 24)
  self.progressBar.setObjectName("progressBar")
  self.gridLayout.addWidget(self.progressBar, 0, 0, 1, 1)

  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"))

2. 每点击一次按钮,打开一个弹窗

class DialogWindow(QDialog, Ui_Dialog):
 def __init__(self, parent=None):
  super(DialogWindow, self).__init__(parent)
  self.setupUi(self)


class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
 def __init__(self, parent=None):
  super(MainWindow, self).__init__(parent)
  self.setupUi(self)

 def open_dialog(self):
  dialog = DialogWindow(self)
  dialog.show()


if __name__ == "__main__":
 app = QtWidgets.QApplication(sys.argv)
 mainWindow = MainWindow()
 mainWindow.show()
 sys.exit(app.exec_())

3. 打开弹窗的同时,打开一个子线程,更新对话框中的进度条

PYQT5开启多个线程和窗口,多线程与多窗口的交互实例

在子线程定义信号,关联对话框更新进度条的槽函数

class DialogWindow(QDialog, Ui_Dialog):
 def __init__(self, parent=None):
  super(DialogWindow, self).__init__(parent)
  self.setupUi(self)

 def update_progressbar(self, p_int):
  self.progressBar.setValue(p_int) # 更新进度条


class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
 def __init__(self, parent=None):
  super(MainWindow, self).__init__(parent)
  self.setupUi(self)
  self.count = 0

 def open_dialog(self):
  dialog = DialogWindow(self)
  dialog.show()
  self.thread = RunThread(self.count)
  self.count += 1
  self.thread.update_pb.connect(dialog.update_progressbar) # 关联
  self.thread.start()


class RunThread(QThread):
 update_pb = pyqtSignal(int) # 定义更新进度条的信号

 def __init__(self, count):
  super().__init__()
  self.count = count

 def run(self):
  for i in range(100):
   print('thread%s' % self.count, i, QThread().currentThreadId())
   self.update_pb.emit(i)
   time.sleep(1)
  pass


if __name__ == "__main__":
 app = QtWidgets.QApplication(sys.argv)
 mainWindow = MainWindow()
 mainWindow.show()
 sys.exit(app.exec_())

4. 关闭对话框,则关闭对应子线程

在对话框中添加自定义信号,并重写关闭事件,在关闭窗口时发送关闭子线程的信号

class DialogWindow(QDialog, Ui_Dialog):
 stop_thread = pyqtSignal() # 定义关闭子线程的信号

 def __init__(self, parent=None):
  super(DialogWindow, self).__init__(parent)
  self.setupUi(self)

 def update_progressbar(self, p_int):
  self.progressBar.setValue(p_int)

 def closeEvent(self, event):
  self.stop_thread.emit()
  pass


class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
 def __init__(self, parent=None):
  super(MainWindow, self).__init__(parent)
  self.setupUi(self)
  self.count = 0

 def open_dialog(self):
  dialog = DialogWindow(self)
  dialog.show()
  self.thread = RunThread(self.count)
  self.count += 1
  self.thread.update_pb.connect(dialog.update_progressbar)
  dialog.stop_thread.connect(self.thread.terminate)
  self.thread.start()


class RunThread(QThread):
 update_pb = pyqtSignal(int)

 def __init__(self, count):
  super().__init__()
  self.count = count

 def run(self):
  for i in range(1, 101):
   print('thread_%s' % self.count, i, QThread().currentThreadId())
   self.update_pb.emit(i)
   time.sleep(1)
  pass


if __name__ == "__main__":
 app = QtWidgets.QApplication(sys.argv)
 mainWindow = MainWindow()
 mainWindow.show()
 sys.exit(app.exec_())

5. 使用线程池QThreadPool管理子线程

使用QThreadPool, 线程需要继承QRunnable,而QRunnable只是namespace,没有继承QT的信号机制,

所以需要另外继承QObject来使用信号,我这里直接在线程中使用封装的信号向外部传递信息

class DialogWindow(QDialog, Ui_Dialog):
 stop_thread = pyqtSignal() # 定义关闭子线程的信号

 def __init__(self, parent=None):
  super(DialogWindow, self).__init__(parent)
  self.setupUi(self)

 def update_progressbar(self, p_int):
  self.progressBar.setValue(p_int)

 def closeEvent(self, event):
  self.stop_thread.emit()
  pass


class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
 def __init__(self, parent=None):
  super(MainWindow, self).__init__(parent)
  self.setupUi(self)
  self.count = 0
  self.pool = QThreadPool()
  self.pool.globalInstance()
  self.pool.setMaxThreadCount(10) # 设置最大线程数

 def open_dialog(self):
  dialog = DialogWindow(self)
  dialog.show()
  thread = RunThread(self.count)
  self.count += 1
  thread.signal.update_pb.connect(dialog.update_progressbar)
  # dialog.stop_thread.connect(thread.stop)
  # self.thread.start()
  self.pool.start(thread) # 线程池分配一个线程运行该任务


class Signal(QObject):
 update_pb = pyqtSignal(int)


class RunThread(QRunnable):
 def __init__(self, count):
  super().__init__()
  self.count = count
  self.signal = Signal() # 信号

 def run(self):
  for i in range(1, 101):
   print('thread_%s' % self.count, i, QThread().currentThreadId())
   self.signal.update_pb.emit(i)
   time.sleep(1)


if __name__ == "__main__":
 app = QtWidgets.QApplication(sys.argv)
 mainWindow = MainWindow()
 mainWindow.show()
 sys.exit(app.exec_())

QThreadPool没有释放正在运行的线程的方法

以上这篇PYQT5开启多个线程和窗口,多线程与多窗口的交互实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。

标签:
PYQT5,多线程,多窗口,交互

铁雪资源网 Design By www.gsvan.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
铁雪资源网 Design By www.gsvan.com

评论“PYQT5开启多个线程和窗口,多线程与多窗口的交互实例”

暂无PYQT5开启多个线程和窗口,多线程与多窗口的交互实例的评论...

稳了!魔兽国服回归的3条重磅消息!官宣时间再确认!

昨天有一位朋友在大神群里分享,自己亚服账号被封号之后居然弹出了国服的封号信息对话框。

这里面让他访问的是一个国服的战网网址,com.cn和后面的zh都非常明白地表明这就是国服战网。

而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?