55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
import threading
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from PySide6.QtWidgets import QApplication, QMainWindow, QPushButton, QMessageBox
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from PySide6.QtCore import QThread, Signal, QObject
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class Worker:
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# 定义一个类属性的信号
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def __init__(self):
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self.task_done_signal = Signal(str)
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def run_task(self):
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import time
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time.sleep(2) # 模拟耗时操作
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# 发送信号
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self.task_done_signal.emit("子线程任务完成！")
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class MainWindow(QMainWindow):
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def __init__(self):
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super().__init__()
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self.setWindowTitle("子线程信号示例")
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self.setGeometry(200, 200, 400, 300)
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# 添加按钮
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self.button = QPushButton("启动子线程", self)
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self.button.setGeometry(100, 100, 200, 50)
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self.button.clicked.connect(self.run_task)
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# 创建子线程和工作者对象
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self.worker_thread = threading.Thread(target=self.run_task)
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self.worker = Worker()
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# 连接信号和槽
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self.worker.task_done_signal.connect(self.show_message)
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def run_task(self):
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# 启动子线程
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self.worker_thread.start()
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def show_message(self, message):
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# 显示来自子线程的消息
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QMessageBox.information(self, "任务完成", message)
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# 停止子线程
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self.worker_thread.quit()
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self.worker_thread.wait()
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if __name__ == "__main__":
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app = QApplication([])
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window = MainWindow()
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window.show()
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app.exec()
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