Meaning of viewState members/fields?

[RudolfErnst]

Hi,

I can't find any documentation of the meaning of the viewState member in particular. My viewState contains the fields

pageViewLayoutMode - integer
pageViewZoom - double
pageViewZoomType - integer
pageViewRow - integer
pageViewX - double
pageViewY - double
pageViewBX - integer
pageViewBY - integer
pageViewPageNum - integer

I'm not sure what pageViewBX and pageViewBY mean. In my case the pair it's often 0,0. So I think it's not the bottom right corner of the view. My intention is to get the current clipping of the document as a rectangle from the viewState, so that I generate a new pdf (crop box) with exactly this cutout.

kind regards
Rudi