When would PDFView.GetVisiblePages() be out of order or not up to date?

Technical Support Apryse SDK
1

For switching the current page in my program, I have some code like:

SetCurrentPage(pageNum);
int[] pages = GetVisiblePages();
int ret = pages[0];

However, I’m running into a problem when I have a sticky note open where pageNum will be 2, but ret will still get set to 1 and visa-vera. Only after changing pageNum multiple times will ret=pageNum.

My thoughts were that maybe events were queuing up but the queue wasn’t fully emptying, but Application.DoEvents() doesn’t seem to help either.
Any thoughts would be great, even a suggestion of where to look.

Thanks,
-Tommy

2

Hello Tommy,

Thanks for letting us know that you’re seeing this. What other values are printed in the array returned by GetVisiblePages()? Note that SetCurrentPage() can sometimes leave a slight portion of the previous page visible (in a continuous page presentation mode).

3

Whatever page I open a sticky note on, that page seems to want to stay visible. Even after SetCurrentPage(), GetVisiblePages() is only returning the one page with the sticky note.
I am using a continuous page presentation mode, is there anything special I should make sure I’m doing in order to get the page to change? Also, since I’m not creating the sticky note programmatically, is there any way to get a reference to the sticky note from the page?

4

I have found the issue. I needed to call Control.Update() on my forms, and a need to use DocLock(true). It seems that the visible page and current pages were changing correctly, but something else was immediately changing them back to their old values; locking the document and terminating all other threads using it (passing true) fixed this issue.