How to print/export a QTreeWidget content?

? Offline

Assuming I have a QTreeWidget like that

!http://i.stack.imgur.com/A1jUW.png(Print QTreeWidget)!

I tried this code to Print/Export this QTreeWidget to a file (The name of this QTreeWidget is trvListVehicle)

@
QPrinter printer(QPrinter::HighResolution);
QPainter painter;
painter.begin(&printer);

double xscale = printer.pageRect().width() / double(ui->trvListVehicle->width());
double yscale = printer.pageRect().height() / double(ui->trvListVehicle->height());
double scale = qMin(xscale, yscale);
painter.translate(printer.paperRect().x() + printer.pageRect().width()/2,
printer.paperRect().y() + printer.pageRect().height()/2);
painter.scale(scale, scale);
painter.translate(-width()/2, -height()/2);

ui->trvListVehicle->render(&painter);
@

The program shows Print dialog for me to choose printer machine. After printing completely, I got a blank page. The page didn't contain any content.

Could you help me?

Thanks!

Jeroentjehome

Never used the QPrinter myself before, but if I read the doc correct you should use the QPainter::begin() function to prepare the printer for writing to the page. When a new page is needed a QPainter::newPage().
That might help for the actual printing.