Cannot move to next page to print HTML content with QPrinter



  • In my small application, I want to preview some HTML content in each page so I used the following code

    @
    /*

    • Handle events when clicking button to preview content
      */
      void MainWindow::on_pushButton_clicked()
      {
      QPrinter printer;
      printer.setPaperSize(QPrinter::A4);
      printer.setOrientation(QPrinter::Portrait);
      printer.setFullPage(true);

      QPrintPreviewDialog printPreview = new QPrintPreviewDialog(&printer);
      connect(printPreview, SIGNAL(paintRequested(QPrinter
      )), this, SLOT(printAllTitle(QPrinter*)));

      printPreview->setWindowTitle("Demo");
      Qt::WindowFlags flags(Qt::WindowTitleHint);
      printPreview->setWindowFlags(flags);
      printPreview->showMaximized();
      printPreview->exec();
      }

    /*

    • Show preview content
      */
      void MainWindow::printAllTitle(QPrinter *printer)
      {
      QVector<QString> titles;
      titles.push_back("Title 1");
      titles.push_back("Title 2");

      QString strStream;
      QTextStream out(&strStream);

      for (int i = 0; i < titles.size(); i++) {
      out << "<html><head></head><body>";
      out << "<p style="font-size:20pt">" + titles.at(i) + "</p>";
      out << "</body></html>";

        printer->newPage();   // Don't move the next page !!!
      

      }

      QTextDocument *document = new QTextDocument();
      document->setHtml(strStream);
      document->print(printer);
      delete document;
      }
      @

    And the result page I got

    !http://i.stack.imgur.com/5qATo.png(Cannot move the next page)!

    After testing the result page many times, I realized that the Printer didn't move the next page to print HTML content.

    How can I solve this issue?

    Thanks!



  • @Calling newPage() on an inactive QPrinter object will always fail. @

    So, may be you should check the PrinterState before you call newPage.


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