I need to be able to detect or work out if the line has been clicked, i have an array of tpoint and am able to detect if clicks occured on the skelton path of the line,

however i'm unsure as to how to work out if the click occured between two tpoints on the line, ie i have point a and point b and a line is drawn between them how do i work out if there has been a click on the line drawn between a and b? and can i create a method so that the click will be automatically detected and methods called to determine if the click was on the line?

Hi! You can identify if click point lie in the
rectangle if do this:

    ------------------------------
    ¦                            ¦
 P1 *                            * P2
    ¦                            ¦
    ------------------------------

P1 and P2 - two points of line (P1=(x1,y1);P2=(x2,y2))
W - half width of this line;
no matter how this rectangle oriented on plane,
if You have point (x,y) then You can calculate

    ((x-x1)*(y2-y1)-(x2-x1)*(y-y1))^2
A= ---------------------------------
         (x2-x1)^2+(y2-y1)^2
if A above W*W then point(x,y) don`t hit to rectangle
else point(x,y) lie in given rectangle.

Ups! :)
I missed second condition.

   (x-x1)*(x2-x1)+(y-y1)*(y2-y1)
B= -----------------------------
       (x2-x1)^2+(y2-y1)^2

So if (B>=0)and(B<=1)and(A<=W*W) then given point
hit to rectangle.