How to print a QGraphicsScene on a color printer using monochrome mode?

Hello everyone,

I want to send a QGraphicsScene to a color printer and print it with monochrome mode, Qt helper shows that QPrinter have two color mode: Color and GrayScale, but I just want to print the picture with black and white, and don't want to print gray color which shows displayed as some Discrete black dots, what should I do?

Thank you for your help.

Momo

Render the scene to a Qbitmap, monochrome QImage, or colour QImage that you then post-process to reduce the colour to black and white... then print that.

Quote:

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Originally Posted by ChrisW67

Render the scene to a Qbitmap, monochrome QImage, or colour QImage that you then post-process to reduce the colour to black and white... then print that.

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Thank you for your answer, I've try that method before, but the scene is too large and QImage could not worked correct.:(