在PyQt5中获取滚动条拇指的大小/宽度？

from PyQt5.QtWidgets import QApplication, QMainWindow, QScrollBar

app = QApplication([])
window = QMainWindow()

scrollbar = QScrollBar(window)
scrollbar.resize(20, 200)  # 设置滚动条的大小

thumb_size = scrollbar.sliderSize()  # 获取滚动条拇指的大小
thumb_width = thumb_size.width()  # 获取拇指的宽度
thumb_height = thumb_size.height()  # 获取拇指的高度

print("拇指的宽度:", thumb_width)
print("拇指的高度:", thumb_height)

window.show()
app.exec_()