the default behavior in the bookmark treeview could be customed by user？

[charygao]

1. when I press ‘→’ button to pagedown the pdf content，the bookmark index for the current page while auto selected and display in the bookmark treeview bottom by auto scrolling。 see the pic:
   
   2.but I wish the bookmark index for the current page while auto selected and auto display in the vertical middle center position for the bookmark treeview window。so that I will see the next paragraph title to understand the curent content indeeper。
   
2. please add the settings for user: TreeViewAutoScollPosition='top/middle/bottom' \ TreeViewAutoScollPosOffset='+1/0/-1'
   thank you!

[kjk]

Please use issues for bug reports and features request.

That being said: I don't think it's possible. We use Windows' TreeView control and https://learn.microsoft.com/en-us/windows/win32/controls/tvm-selectitem message to implement this functionality.

The only options that I see available are to show it at end (what we do) or at the top (with TVGN_FIRSTVISIBLE flag).

There's no option for the middle and between top / bottom option, bottom is less bad option.