print Table onto pdf

i want to build an empty table in Qt which output into a pdf

here is what i got so far but im having issue. Is there something im missing, it's a bit messy i know i was doing some testing
Code:
QApplication a(argc, argv);
 
        float j= 5;
    QPrinter printer;
        printer.setPageMargins(j,j,j,j,QPrinter::Inch);
        printer.setOutputFormat(QPrinter::PdfFormat);
        printer.setPageSize(QPrinter::A4);
        printer.printRange();
        printer.setOutputFileName("C:\\qtpdf\\test.pdf");
        QPainter painter;
        if (! painter.begin(&printer)) { // failed to open file
            qWarning("failed to open file, is it writable?");
            return 1;
        }
 
 
        printer.newPage();
        //creates writing format
        QTextCharFormat NormalFormat;
 
 
        //create pointer to current cursor location
        QTextCursor cursor;
        cursor.beginEditBlock();
 
        QTextTableFormat tableFormat;
 
        tableFormat.setBackground(QColor("#ffffff"));
        tableFormat.setCellPadding(4);
        tableFormat.setCellSpacing(3);
        tableFormat.setBottomMargin(2);
 
        QTextTable *tab = cursor.insertTable(30,30);
 
 
//        tab->insertRows(20,1000);
//        tab->insertColumns(20,10);
 
//        QTextFrame *frame=cursor.currentFrame();
//        QTextFrameFormat frameFormat;
//        frameFormat.setBorder(0);
//        frameFormat.setBorderStyle(QTextFrameFormat::BorderStyle_Inset);
//        frameFormat.setPageBreakPolicy(QTextFormat::PageBreak_Auto);
//        cursor.movePosition(QTextCursor::NextBlock);
//        QTextCharFormat format_entete_tab;
//        format_entete_tab.setFontPointSize(15);
//        format_entete_tab.setFontWeight(QFont::Bold);
 
//        QTextCharFormat format_cellule;
//        format_cellule.setFontPointSize(11);
 
////        for(int i=0;i<100;i++)
////        {
////            //QTextTableCell titre = tab->cellAt(0,i);
////             tab->cellAt(0,i);
////            //QTextCursor cellCursor=titre.firstCursorPosition();
////             QTextCursor cellCursor;
////             cellCursor.insertText("hello");
////        }
//        QTextTableCell cell;
 
//        QTextCursor cellCursor;
//        for(int row=1;row<500;row++)
//        {
//            for(int col=0;col<60;col++)
//            {
//                cell.firstPosition();
//                //cellCursor=cell.firstCursorPosition();
//                cellCursor.insertText("bye");
//            }
//        }
 
//        cursor.endEditBlock();
 
        painter.drawText(10, 10, "Test");
        painter.drawText(100,100,"hello world");
       // ret=renderToImage();
 
        int x,y,z,h;
        h= 950;
        z= 950;
        y= 450;
        x= 10;
        QRect rec(x,y,z,h);
        QRect rec2(20,0,100,100);
 
         if (h>j)
         {
 
                 printer.newPage();
 
         }
 
         painter.drawRect(rec);
         painter.drawRect(rec2);
        // painter.drawRect(rec3);
         printer.pageRect();
         painter.drawText(rec,Qt::AlignLeft,"Left");
         painter.drawText(rec,Qt::AlignCenter,"Center");
         painter.drawText(rec,Qt::AlignRight,"Right");
         painter.drawText(rec,Qt::AlignBottom,"low");
         painter.drawText(rec2,Qt::AlignLeft,"No");
         painter.drawText(rec2,Qt::AlignCenter,"Maybe");
         painter.drawText(rec2,Qt::AlignRight,"Yes");
 
 
             printer.newPage();
         printer.fullPage();
        if (! printer.newPage()) {
            qWarning("failed in flushing page to disk, disk full?");
            return 1;
        }
        painter.setBrush(Qt::SolidPattern);
         int r,e;
         r=10;
         e=50;
        QString hi = "aaaaaaa";
        QPen pen(Qt::black, 2, Qt::SolidLine);
        painter.setPen(pen);
        QLineF line(10,10,685,10);
        painter.drawLine(line);
 
        painter.end();
 
 
 
 
    MainWindow w;
    w.show();
 
    return a.exec();