#include <QPainter>
#include <QPrinter>
#include <QtCore/QCoreApplication>

int main(int argc, char *argv[])
{
	QCoreApplication a(argc, argv);

	QPrinter* printer = new QPrinter();
	printer->setOutputFileName("print.pdf");
	printer->setOutputFormat(QPrinter::PdfFormat);

	QPainter painter(printer);
	painter.setRenderHints(QPainter::Antialiasing, true); // false/true
	painter.setPen(Qt::NoPen);

	QLinearGradient grad(0.0f, 0.0f, 0.0f, 90.0f);
	grad.setColorAt(0.0f, Qt::blue);
	grad.setColorAt(1.0f, Qt::white);

	painter.setBrush(grad);
	painter.scale(1.337, 1.337);
	painter.drawRect(QRect(10, 10, 100, 100));
	painter.end();

	return 0;
}