This can be done, but it will take some work. There are two approaches. You can use the PICTURE functions, and build the diagrams up a layer at a time. (Your PICTURE vi's are loop through, meaning you can take the output of one, say a grid, and input it to another, to overlay a pointer, for example) Another way, probably more labor intensive, is to use the property node to modify a button of some kind ( color, shape, etc) to make it appear like the indicatory you want. You might want to look through the NI database to see if there is anything similar that someone has written that you can "embrace and extend" to fit your application. In the meantime, you have given me a personal challenge! I think this would be a good extra-curricular project for me :)
Eric
