Ok--here's my question.

  I would like to write a simple program that will give a list of (x,y) values for a line, y=mx+b.   I would like the user to pick one (x,y) point on the line and store this value.  I would like to then change the equation of the line and give the user as second choice while storing the first choice for future use.  I would like to let the user do this repeatedly and at the end display all his choices.  

   I want to somehow use listbox1_click() so that everytime he clicks a choice on the listbox, a new set of choices appears in the same listbox space so he can click on a new choice.  In the end, I would like all his choices to appear in the listbox as a series of segments which connect the nearest chosen points.

One problem I am having is sending the new values back to  sub listbox1_click().  

I would appreciate if someone can send me a sample code for this type of thing.

Thanks,

Jeff
  

Hi Jeff,
2 things:
1) What is the "problem" that you are having?
2) So, you present the user with a list of options (in listbox1), they click one. This is fine, however, how will you present the 2nd list of options without destroying the single one that they have selected? Won't this be confusing to the user? I would suggest that you have a seperate list that displays the user's selections rather than re-using a single list.
Regards,
Kieron


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