tenny20ca's picture

Pen colour black when drawing to print context

Hi All

I'm using OpenTK to render lines in a CAD application. The lines render fine in print preview (blue) but render black on print. The page has other colours that print fine(so it's not printing black and white). The blue lines are being drawn on existing black lines so i'm not sure if the lines being drawn aren't being sent to the printer context or if they are being overridden with the black lines.
Thanks in advance