Urgent ||| Printing bitmaps with gray scaling

How to print bitmaps with gray scaling

[Feng Yuan]

Use SetStretchBltMode(STRETCH_HALFTONE), when bitmap is sent to a black/white DC, it's halftoned. If the DC is a color DC, for example, color printer, draw into a black/white memory DC first, then to the color DC. Or convert RGB to grayscale yourself.