PerPixelHud

by Rockinawsome
You could use the technique demonstrated for a tiny paint program, or (in theory) a 3D game as limited as tank busters.
ID:127742
 
I almost deleted this. I made it as an experiment to see if I could make a custom 3D engine based on the BYOND engine, by using an external executable which would supply the information of the individual pixels. This information includes the colors and coordinates.

This is provided as is, and should be used at your own risk. If you make the screen larger than the default by too much, the program will crash. What this means to other programs running depends on your current OS and age of the equipment your using. For my vista machine or XP machines, it doesn't do jack, but for something more archaic I would hazard against it.

Unless you have a brilliant plan for how to make this idea actually work, leave me alone, I don't want to hear it. If its crap, too bad, someone may still find it useful.