Create the white-rectangle window against which the scroll bars will be positioned这句话正常语序怎么说，还有against which什么意思？
定语从句介词提前呵～～
Create the white-rectangle window. The scroll bars will be positioned against the white-rectange window.
创建一个白色矩形窗口，滚动条将会紧靠这个窗口放置。