Add a highlight annotation to a PDF in C++

To add a highlight annotation to a PDF Document page.

PDFDoc doc(filename);
Page page = doc.GetPage(1);

// Create a highlight
Highlight hl = Highlight::Create( doc, Rect(100,490,150,515) );
hl.SetColor( ColorPt(0,1,0), 3 );
hl.RefreshAppearance();
page.AnnotPushBack( hl );

Add or edit PDF annotations sample
Full code sample which shows how to add or edit PDF annotations (e.g. hyperlink, intra-document link, stamp, rubber stamp, file attachment, sound, text, free-text, line, circle, square, polygon, polyline, highlight, squiggly, caret, and ink).