Exporting a document to PDF

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Below is a minimal example of how to print a QTextDocument to PDF:

1. include <QtWidgets>
2. ifndef QT_NO_PRINTER
3. include <QPrinter>
4. endif

int main(int argc, char *argv[]) {

   QApplication app(argc, argv);

   QString fileName = QFileDialog::getSaveFileName((QWidget* )0, "Export PDF", QString(), "*.pdf");
   if (QFileInfo(fileName).suffix().isEmpty()) { fileName.append(".pdf"); }

   QPrinter printer(QPrinter::PrinterResolution);
   printer.setOutputFormat(QPrinter::PdfFormat);
   printer.setPaperSize(QPrinter::A4);
   printer.setOutputFileName(fileName);

   QTextDocument doc;

doc.setHtml("

Hello, World!

\n

Lorem ipsum dolor sit amet, consectitur adipisci elit.

");

   doc.setPageSize(printer.pageRect().size()); // This is necessary if you want to hide the page number
   doc.print(&printer);

}