使用QPrinter :: HighResolution不打印

Question

I implement the ability to print reports in my project. Reports are presented as HTML content. I use for print QWebEnginePage. I need high resolution print output for reports:

QPrinter printer = new QPrinter(QPrinter::HighResolution);

But when printing with the "print" function, print fails, with message in debug:

QImage: out of memory, returning null image

When printing with ScreenResolution, everything is fine, but the result is poor quality. Version Qt - 5.10.1

Answer 1

Probably you are indeed running out of memory. Try to convert your web page into something that renders better, eg PDF and print the PDF instead.