I'm working on writing a small 10 question quiz program. What I am trying to do in one of the questions is make it so only one out of the two possible answers will not be clickable. What I mean is when the user get's near the one check box it moves away from the mouse and will not allow you to select it. I"m thinking it's possible to do this with the mouse move event but im not sure how exactly to do write it.

I have done something like this with the mouse hover event. Basically I created like 4 separate instances of the same check box and positioned them around my form. I set all but the default box to invisible. Then using mouse hover I set the first one to invisible and the next one to visible, and so on. It works but not exactly what i was going after. I want the user to be able to chase the box all over the form or even off the form. I can't seem to find anything on doing this. I've searched and searched but keep coming up with nothing.