We have written a display driver for an 8 bit greyscale device.
In a multimon system for XP, our display is used along with a display adapter that has 24 bit color. When an icon is dragged over the greyscale monitor, the background color(greyscale) changes. This new color is always a number of the form (n%8) = 4, nearest to the original color/greyscale.
How can we handle the translation of olors from 24 bit depth to 8 bit in the display driver?