selecting texts and thumbnail Color

How can I see the "PDFVSel class"?
"PDFVSel class" is in jar file.

I can not understand your comment.

You need a premium or a professional license to edit this class.

I use a professional license.

You need to download the source code from here --> www.androidpdf.mobi/shop/key-request

1. Complete the fileds with your Reference order number & PIN number
2. Choose your "Available release"
3. Download PDFEx sources
4. Add the sources files in your project
5. Delete the jar from your project
6. Refresh

You will see the PDFVSel class in your project and edit it as you want!

I got it.
I solved this problem.

Thank you for your reply~!~