Can QskScrollArea set the size according to the size of the item of setScrolledItem?

[hestrro]

Application scenarios:
When I set the scrollitem's zoom ratio through setscale, its width and height will not be changed, so scrollarea cannot detect changes in its view. I want scrollarea's drag bar to change with the view size, but this way I would have to setfixsize to change its actual size, I just want to change its view size via setscale. There are ways to make it not change the size of the sliding area according to the content size but according to your own settings.

[hestrro]

I found setScrollableSize(QSizeF(newwidth,newheight));