I am writing software in Windows CE for my Win Mobile 5 handheld PC. The reason why I am using CE is I have very little (next to none) experience in .NET and I feel more comfortable writing in a VB6 environment (and I have a CE development system installed to allow me to do this in VB6).

A piece of code I am writing displays a map on-screen (taken from streetmap) in an image box. It loads a BMP file (seems CE items can only load BMP or even less efficient image formats) and displays it in the image box which I will then use for navigation (not through a GPS system...I'm not writing that sort of program). I want to then read in the values of specific pixels within that image and perform a filter on the pixel and re-draw it on the image...I basically want to highlight specific streets and will have co-ordinate data on each street in the program.

Has anyone got suggestions on how I would be able to manipulate pixels in an image like that?

Another aspect of this program I am working on is a more efficient way to store map-style images by reducing the number of colours...in theory I could get the maps I am displaying into about 5k or so...I'm looking for a method that could manipulate an image fast enough in CE, but the priority here is the above (editing specific pixels rather than the whole image :-))