Hi all,
I've just swiched from Qt 4.2.2 to Qt 4.4.3 anf the code I show below does not work anymore. It prints black lines .. any of you knows why it appens ??
Thank you in advance.
rmagro

Qt Code: 
  1. QPrinter printer(QPrinter::HighResolution);
  2. 	printer.setOrientation(QPrinter::Landscape);
  3.  
  4.  	QTableWidget *nuovaTableWidget = tableWidget;
  5.  
  6. 	QPrintDialog dlg(&printer, this);
  7.  
  8. 	if (dlg.exec() == QDialog::Accepted) 
  9.     {
  10.         // calculate the total width/height table would need without scaling  
  11.         const int rows = nuovaTableWidget->model()->rowCount(); 
  12.         const int cols = nuovaTableWidget->model()->columnCount();  
  13.  
  14. 		double totalWidth = 0.0;
  15.  
  16.         for (int c = 0; c < cols; ++c)  
  17.         {  
  18. 			totalWidth += nuovaTableWidget->columnWidth(c); 
  19.         }
  20.  
  21. 		double totalHeight = 0.0;
  22.  
  23.         for (int r = 0; r < rows; ++r) 
  24.         { 
  25. 			totalHeight += nuovaTableWidget->rowHeight(r);
  26.         }
  27.  
  28. 		double totalHeight1;
  29. 		int numero_pagina = 1;
  30.  
  31. 		QPixmap pixmap(totalWidth, nuovaTableWidget->horizontalHeader()->height());
  32. 		QPixmap pixmap1(totalWidth, totalHeight);
  33.  
  34. 		QPaintEvent event_1(QRect(0, 0, totalWidth, nuovaTableWidget->horizontalHeader()->height()));
  35. 		QPaintEvent event_2(QRect(0, 0, totalWidth, totalHeight));
  36.  
  37. 		QPainter::setRedirected(nuovaTableWidget->horizontalHeader()->viewport(), &pixmap);		
  38. 		QApplication::sendEvent(nuovaTableWidget->horizontalHeader()->viewport(), &event_1);
  39. 		QPainter::restoreRedirected(nuovaTableWidget->horizontalHeader()->viewport());
  40.  
  41. 		QPainter::setRedirected(nuovaTableWidget->viewport(), &pixmap1);		
  42. 		QApplication::sendEvent(nuovaTableWidget->viewport(), &event_2);	
  43. 		QPainter::restoreRedirected(nuovaTableWidget->viewport());
  44.  
  45. 		// print scaled pixmap 
  46. 		QPainter painter(&printer);
  47.  
  48. 		QDateTime dataDiOggi = QDateTime::currentDateTime();
  49. 		QString dataDiOggiStringa = dataDiOggi.toString("dd.MM.yyyy hh:mm:ss");
  50.  
  51. 		painter.scale(4.5,4.5);
  52. 		painter.drawPixmap(0, 100, totalWidth, nuovaTableWidget->horizontalHeader()->height(), pixmap);
  53. 		painter.drawPixmap(0, 100+nuovaTableWidget->horizontalHeader()->height(), totalWidth, totalHeight, pixmap1);
  54. 	}
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