I have a problem to shade colors with PInvoke. I have to release a printing software, which uses System.Drawing Namespace, itextDotNet and PInvoke.
With System.Drawing is was easy to shade, because I only set the alpha-value of the color. The same for itextDotNet, there it is the tint-value.
How can I set this value in PInvoke? E.q. for the color black, the shading form 0 (= white) till 100 (= black) and all value between 0 and 100 should be several grayscales.