1. 基础窗口与信号槽机制

python

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import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("信号槽示例")
        btn = QPushButton("点击触发信号", self)
        btn.clicked.connect(self.on_button_click)  # 连接信号与槽:cite[1]

    def on_button_click(self):
        print("按钮被点击！信号已触发")

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

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