title: QTextDocument single border for table
body: <p>Making report's in QT without html, i've got such problem as multiple border in table -
  each cell got self border.</p>
  
  <pre><code>QTextTableFormat tableFormat;
  tableFormat.setCellPadding(5);'
  tableFormat.setHeaderRowCount(1);
  tableFormat.setBorderStyle(QTextFrameFormat::BorderStyle_Solid);
  tableFormat.setBorder(1);
  </code></pre>
  
  <p>...</p>
  
  <p>Changing setBorder(x) gave no result.</p>