QPrinter 打印文档

使用的html的一个标签来控制文档的格式 

void Dialog::on_pushButton_clicked()
{
    QPrinter printer(QPrinter::PrinterResolution);
    QPrintDialog printDialog(&printer,this);
    if (printDialog.exec()){
        QTextDocument textdocument;
        QString title="Title";
        QString body="this is the content";
        QString str = ""+title+""+body+"
";
        textdocument.setHtml(str);
  //    textdocument.setPlainText(str);
        textdocument.print(&printer);
    }
}