QPrinter printer(QPrinter::HighResolution); printer.setColorMode(QPrinter::Color);
QPrinter printer(QPrinter::HighResolution); printer.setColorMode(QPrinter::GrayScale);This code creates a QPrinter object and sets the color mode to `QPrinter::GrayScale`. This means that the printer will output only grayscale images, even if the source document contains color images. Qt is the package library used in these code examples.