Highlighting text based on x and y co-ordinates

Hi,
We are working on a pdf viewer where we have to highlight text based on x and y axis. We are saving the x and y co-ordinates to local storage and when ever the user loads the pdf based on the x and y point we want to perform the highlight. of that text. Is there any way to do that ? If so please share us a sample code so that we can perform the highlight

Thanks

The most straightforward way, is to save the highlight annotation start and end char indices in PDF coordinates, and then reuse it to recreated the highlight.
You can use: to get the char index at x,y in PDF coordinates to recreated the highlight annotation

If you have a premium license you can use: to export an annot to import an annot.

If what you want is something different, please explain with details.

how to get the x,y co-ordinates and pass it to the PDFPAge.ObjsGetCharIndex() to get start index and end index ?

It depends on how you want to implement it, if it's based on the touch event, then x,y will be the touch point,
You only need to convert screen coordinates to PDF coordinates, using like in PDFVPage.SetSel the char index is calculated in PDFVSel.SetSel
In the demo project it works based on the following scenario:

1. Click on the highlight button, which starts the selection mode
   Code:

   m_view.vSelStart();
2. Handle the selection based on touch events: PDFView.OnSelTouchBegin, OnSelTouchMove, OnSelTouchEnd
3. Show the selection handling dialog
4. End selection mode
   Code:

   m_view.vSelEnd();