最简单的QT程序

python版：

from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QRadioButton
import sys

app = QApplication([])
w = QWidget()
layout = QVBoxLayout()
status = QRadioButton()
layout.addWidget(status)
status.setChecked(True)
w.setLayout(layout)
w.show()
sys.exit(app.exec_())