pyqt5 界面A打开另一个界面B

 

 

 

样例1 函数绑定触发关闭

 

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import sys from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton, QWidget, QVBoxLayout, QLabel   class TaskCreationWindow(QWidget):     def __init__(self, on_close_callback):         super().__init__()         self.setWindowTitle("任务创作界面")         self.setGeometry(100, 100, 500, 500)         layout = QVBoxLayout()         layout.addWidget(QLabel("这是任务创作界面"))         self.setLayout(layout)         self.on_close_callback = on_close_callback       def closeEvent(self, event):         self.on_close_callback()         event.accept()   class ServerWindow(QWidget):     def __init__(self, on_close_callback):         super().__init__()         self.setWindowTitle("服务器界面")         self.setGeometry(100, 100, 500, 500)         layout = QVBoxLayout()         layout.addWidget(QLabel("这是服务器界面"))         self.setLayout(layout)         self.on_close_callback = on_close_callback       def closeEvent(self, event):         self.on_close_callback()         event.accept()   class MainWindow(QMainWindow):     def __init__(self):         super().__init__()         self.setWindowTitle("服务器控制端")         self.setGeometry(100, 100, 500, 500)           self.task_window = None         self.server_window = None           central_widget = QWidget()         self.setCentralWidget(central_widget)           layout = QVBoxLayout()           self.task_button = QPushButton("打开任务创作界面")         self.task_button.clicked.connect(self.open_task_window)         layout.addWidget(self.task_button)           self.server_button = QPushButton("打开服务器界面")         self.server_button.clicked.connect(self.open_server_window)         layout.addWidget(self.server_button)           central_widget.setLayout(layout)       def open_task_window(self):         if self.task_window is None:             self.task_window = TaskCreationWindow(self.on_task_window_closed)             self.task_window.show()         else:             self.task_window.raise_()       def open_server_window(self):         if self.server_window is None:             self.server_window = ServerWindow(self.on_server_window_closed)             self.server_window.show()         else:             self.server_window.raise_()       def on_task_window_closed(self):         self.task_window = None       def on_server_window_closed(self):         self.server_window = None   if __name__ == "__main__":     app = QApplication(sys.argv)     main_window = MainWindow()     main_window.show()     sys.exit(app.exec_())

　　

样例2 共享内存

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import sys from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton, QWidget, QVBoxLayout, QLabel   from API_tcp_sever_ui import * from API_sever_setJson_ui import *   class TaskCreationWindow(QWidget):     #def __init__(self, on_close_callback):     def __init__(self,ShareDatas,lock_):         super().__init__()         self.ShareDatas_=ShareDatas         self.lock_=lock_         self.ShareDatas_[1]=1 # 窗口打开标志位           super().__init__()         self.setWindowTitle("任务创作界面")         self.setGeometry(100, 100, 500, 500)         layout = QVBoxLayout()         layout.addWidget(QLabel("这是任务创作界面"))         self.setLayout(layout)         #self.on_close_callback = on_close_callback       def closeEvent(self, event):         #self.on_close_callback()         self.ShareDatas_[1]=0 # 窗口打开标志位         event.accept()   class ServerWindow(QWidget):     #def __init__(self, on_close_callback):     def __init__(self,ShareDatas,lock_):         super().__init__()         self.ShareDatas_=ShareDatas         self.lock_=lock_         self.ShareDatas_[2]=1 # 窗口打开标志位           self.setWindowTitle("服务器界面")         self.setGeometry(100, 100, 500, 500)         layout = QVBoxLayout()         layout.addWidget(QLabel("这是服务器界面"))         self.setLayout(layout)         #self.on_close_callback = on_close_callback       def closeEvent(self, event):         #self.on_close_callback()         self.ShareDatas_[2]=0 # 窗口打开标志位         event.accept()   class MainWindow(QMainWindow):     def __init__(self,ShareDatas_,lock_):         super().__init__()           self.ShareDatas_=ShareDatas_         self.lock_=lock_           self.setWindowTitle("服务器控制端")         self.setGeometry(100, 100, 500, 500)           self.task_window = None         self.server_window = None           central_widget = QWidget()         self.setCentralWidget(central_widget)           layout = QVBoxLayout()           self.task_button = QPushButton("打开任务创作界面")         self.task_button.clicked.connect(self.open_task_window)         layout.addWidget(self.task_button)           self.server_button = QPushButton("打开服务器界面")         self.server_button.clicked.connect(self.open_server_window)         layout.addWidget(self.server_button)           central_widget.setLayout(layout)       def open_task_window(self):         if self.ShareDatas_[2]==0:             # self.task_window = TaskCreationWindow(self.on_task_window_closed)             # self.task_window.show()             self.task_window = Clinet_UI_MAIN(self.ShareDatas_,self.lock_)             self.task_window.show()             self.ShareDatas_[2]=1                       else:             self.task_window.raise_()# 窗口至于上层       def open_server_window(self):        #if self.server_window is None:             # self.server_window = ServerWindow(self.on_server_window_closed)             # self.server_window.show()         if self.ShareDatas_[1]==0:             self.server_window = ServerApp(self.ShareDatas_,self.lock_)             self.server_window.show()             self.ShareDatas_[1]=1         else:             self.server_window.raise_()# 窗口至于上层       def on_task_window_closed(self):         self.task_window = None       def on_server_window_closed(self):         self.server_window = None   if __name__ == "__main__":       #1-1初始化共享内存     manager=Manager()     ShareDatas_=manager.dict()#存str类型数据     #1-2用之前必须预先初始化 否则后面无法访问     ShareDatas_[0]=0#触发     ShareDatas_[1]=0#界面1 jsoN操作文件 打开情况     ShareDatas_[2]=0#界面2 服务器 打开情况     #1-3线程锁 保护多个线成对数据控     lock_=manager.Lock()       app = QApplication(sys.argv)     main_window = MainWindow(ShareDatas_,lock_)     main_window.show()     sys.exit(app.exec_())