<html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> Many thanks for your help Fabio! I have tryed to work on your example and wrote the following code: Poppler::LineAnnotation *ia = new Poppler::LineAnnotation(Poppler::LineAnnotation::StraightLine); QLinkedList<QPointF> points; points.push_back(QPointF(50, 50)); points.push_back(QPointF(150, 150)); ia->setLinePoints(points); Poppler::Annotation::Style style; style.setColor(QColor(0, 0, 0)); style.setWidth(4.0); ia->setStyle(style); Poppler::Page *p = _doc->page(npage); p->addAnnotation(ia); Poppler::PDFConverter *conv = _doc->pdfConverter(); conv->setOutputFileName(QString("C:/Users/.../test.pdf")); conv->setPDFOptions(conv->pdfOptions() | Poppler::PDFConverter::WithChanges); conv->convert(); I then tried to open the document with Nitro PDF Professional. It seems that the annotation is there, because it is displayed by Nitro PDF when I click on the "Comments" button, but I cannot see it on the screen (I expected to see it drawn over the document). I also tried to open the PDF with the Chrome browser's internal viewer, but the result is the same. Am I missing something? Thanks in advance, Francesco. On 18/05/2012 17:03, Fabio D'Urso wrote: <blockquote cite="mid:BLU0-SMTP201887117E141FC3F5B9A36AF1E0@phx.gbl" type="cite"> <pre wrap="">On Friday, May 18, 2012 03:34:53 PM Francesco Gabbanini wrote: </pre> <blockquote type="cite"> <pre wrap="">I noticed that version 0.20 of Poppler has introduced the possibility of adding, modifying and removing annotations from PDF documents. These features seem to be available through the qt4 interface library as well. </pre> </blockquote> <pre wrap="">Correct. Note that only a subset of what we promise to do is implemented (setters for some properties, notably timestamps and popup window, are noops). </pre> <blockquote type="cite"> <pre wrap="">I have read the qt4 interface documentation and I found that annotation creation seems to be possible by calling the static method Poppler::AnnotationUtils::createAnnotation(const QDomElement &annElement), which returns a pointer to an Annotation. </pre> </blockquote> <pre wrap="">It's one of the two possible ways. The other one is to use the constructor of the annotation type you want to create (eg new InkAnnotation) and use setters to set the properties. </pre> <blockquote type="cite"> <pre wrap="">I was wondering what is that QDomElement & that has to be given as an input to the method. </pre> </blockquote> <pre wrap="">It's a undocumented format to describe the annotations. You can some get examples calling AnnotationUtils::storeAnnotation on existing annotations. If you have Okular installed, it's also the same format Okular uses to store user-created annotations internally (in ~/.kde/share/apps/okular/docdata/). </pre> <blockquote type="cite"> <pre wrap="">Is there some documentation around describing how to work with annotations using the qt4 interface? Or maybe, does anybody have a simple example on how to create annotations in a PDF using the qt4 interface? </pre> </blockquote> <pre wrap="">No full examples yet. In general, it goes like this: Document* document = Document::load(inputfilename); Page* pdfPage = document->page(pagenum); // 0-based InkAnnotation *ann = new InkAnnotation(); // Set its properties here ... pdfPage->addAnnotation(ann); // ... or here (they both work) PDFConverter *conv = document->pdfConverter(); conv->setOutputFileName(outputfilename); conv->setPDFOptions(conv->pdfOptions() | PDFConverter::WithChanges); conv->convert(); Supported annotation types are: Text, Line, Geom, Ink, Stamp, Highlight. Note that StampAnnotations are stored to file, but they're not rendered by poppler at the moment. *IMPORTANT*: Oops! I forgot to make TextAnnotation ctor public. I'm attaching a patch. Fabio </pre> <fieldset class="mimeAttachmentHeader"></fieldset> <pre wrap="">_______________________________________________ poppler mailing list <a class="moz-txt-link-abbreviated" href="mailto:poppler@lists.freedesktop.org">poppler@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/poppler">http://lists.freedesktop.org/mailman/listinfo/poppler</a> </pre> </blockquote> </body> </html>