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45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
import sys
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from PySide6 import QtCore, QtWidgets
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"""
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QDial 旋钮控件
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圆形的范围控制控件，类似于电位器或速度表
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官方文档：https://doc.qt.io/qtforpython/PySide6/QtWidgets/QDial.html
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继承自QAbstractSlider
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只有一种构造函数，可以设置父控件
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.__init__(self, parent: Optional[QWidget] = None)
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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("QDial")
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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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dial = QtWidgets.QDial(self)
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dial.move(200, 200)
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info_label = QtWidgets.QLabel(self)
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info_label.move(320, 230)
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@QtCore.Slot(int)
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def show_value(value: int):
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info_label.setText(f"旋钮的值变成了{value}")
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info_label.adjustSize()
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dial.valueChanged.connect(show_value) # 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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