Highlight Text using X/Y co-ordinates

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i developing pdf application using vb.net. need highlight pdf document using x/y co-ordinates.

i co-ordinates define rectangle -

?ocoord(0)
{system.array}
(0): 36.0 {double}
(1): 799.1719970703125 {double}
(2): 39.33599853515625 {double}
(3): 799.1719970703125 {double}
(4): 36.0 {double}
(5): 785.30010986328125 {double}
(6): 39.33599853515625 {double}
(7): 785.30010986328125 {double}

the co-ordinates fetched using following method,

ocoord = jso.getpagenthwordquads(page, word)

how shade pdf using above co-ordinates?

how addannot() create new hilite annotation?

leonard


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