TOPIC:

Hello,
I want to add more margin between all pages in PDF viewer.
How i can achieve this functionality ?

You can achieve this by setting the page gap.
or

You can achieve this by setting the page gap.
PDFView.vSetPageGap
or
PDFLayout.vSetPageGap

There method setGap around pages.
We need to set Get for Top and bottom gaps so we can differentiate pages.

How we can achieve this ?

any reply for me ?

The page gap is handled based on the view mode, i.e. in case of vertical mode the gap will be used vertically between pages (top and bottom).
in case of horizontal mode the gap will be used horizontally between pages (left and right).

So if you need something different than that, you need to change the behavior of the method vLayout of the view mode you are using.