Printing QPixmap. Resolution problem

[ivanicy]

Hello!

I'm trying to print a QPixmap with QPrinter but it appears in very low resolution. I don't know how to fix it.
At first, I have a function that initializes the QPrinter and the QPrintPreviewDialog, and put this in a layout. Then, in a second function, I draw the pixmap with a QPainter. When I execute that, the resolution of the QPixmap is very very low.

Any idea?

Here is my code:

void report_tab::showPrint() {
    printer.setResolution(QPrinter::HighResolution);
    printer.setPaperSize(QPrinter::A4);
    printer.setOrientation(QPrinter::Portrait);

    printDialog = new QPrintPreviewDialog(&printer);
    connect(printDialog, SIGNAL(paintRequested(QPrinter*)), this, SLOT(print(QPrinter*)));

    ui->printLayout->addWidget(printDialog);
    printDialog->exec();
}

void report_tab::print(QPrinter *p) {
    QPainter painter;
    screenshot = screenshot.scaled(p->pageRect().width(), p->pageRect().height(), Qt::KeepAspectRatio);
    painter.begin(p);
    painter.drawPixmap(0, 0, screenshot);
    painter.end();
}

Thank you very much!

[ivanicy]

I solved the problem. I tried to paint a QImage instead of a QPixmap and it works successfully!