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Add 03-12-05-05
QMessageBox-信号
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import sys
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from PySide6 import QtWidgets
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"""
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QMessageBox 信号
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除继承自父类的信号,QMessageBox只有一种信号:
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.buttonClicked(button: QAbstractButton) 当信息提示框中的按钮被点击时发射此信号,按钮作为参数传出
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"""
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class MyWidget(QtWidgets.QWidget):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.setWindowTitle("QMessageBox-信号")
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self.resize(800, 600)
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self.setup_ui()
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def setup_ui(self) -> None:
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"""设置界面"""
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# 创建对话框
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message_box = QtWidgets.QMessageBox(
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QtWidgets.QMessageBox.Warning,
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"这是一个消息提示框",
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"您不能在关闭模态对话框前操作其他窗口!",
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QtWidgets.QMessageBox.Ok | QtWidgets.QMessageBox.Cancel,
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self,
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)
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# 测试信号:将获取到的按钮的文本打印到终端
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message_box.buttonClicked.connect(lambda btn: print(btn.text())) # type: ignore
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# 在主界面上弹出对话框
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pop_btn = QtWidgets.QPushButton("弹出对话框", self)
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pop_btn.move(200, 200)
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pop_btn.clicked.connect(message_box.open) # type: ignore
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if __name__ == "__main__":
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app = QtWidgets.QApplication(sys.argv)
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window = MyWidget()
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window.show()
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sys.exit(app.exec())
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