Qt has built-in PDF export support (QPrinter::PdfFormat).
What's the best way to print an SQL table to a PDF file? (a table from a database loaded with QSqlDatabase and linked to a QTableView)...
You use QWidget::render. See the documentation about Printing Widgets.
来源：https://stackoverflow.com/questions/5939491/qt4-print-a-sql-table-to-pdf