Star pattern

[Corona]

Hi, 

I only recently switched to e-prime having used Inquisit software 
previously. I am designing a dot probe experiment with images. After a pair 
of images are displayed, I present a star in either of the two locations 
where the images appeared. The participant is then expected to click 
anywhere in the star location. I am having problems coming up with a star 
shaped design that would be generated in the locations where the two images 
appear. 
Is it better to just create a star bitmap image, and then ask the user to 
click on the location where the star appeared? My only problem with this 
strategy is that I would not be able to track mouse co-ordinates outside of 
the star image, since I would not have the exact point co-ordinates of the 
star. (For example, if I were to use the star as shown on this page:  
http://www.ehow.com/how_6056225_measure-interior-angles-star.html , and 
used the saved bitmap image as a target prompt (i.e. the star that would 
appear in either of two locations where the images were), I would be able 
to estimate the point co-ordinates). Tracking mouse co-ordinates is vital 
in our experiment, as it is going to be used in tandem with, and to 
validate eye tracking that will also be used.
My images were of the following dimensions (if that helps in any way):
424 * 283
(rectangular images)

Below is a sample code I have been trying to run to generate a star image:
Dim cnvs As Canvas
Set cnvs = display.Canvas
cnvs.PenColor = CColor("white")
cnvs.FillColor = CColor("black")
cnvs.RoundedRectangle 40, 35, 300, 40, 25, 25

Dim arrthepoint(5) as Integer
Dim arrthepointy(5) as Integer
'thepoint[5].center = cnvs.RoundedRectangle.CenterPoint();
Dim i as integer
Dim x as double
Dim y as double
for i = 0 to i = 4

x = Cos(i * 2 * PI / 5)

y = Sin(i * 2 * PI / 5)

arrthepoint(i) = arrthepoint(x)
arrthepointy(i) = arrthepointy(y)



Dim p as double 
p = 3.1415926
cnvs.Line arrthepoint(2),arrthepointy(0),0,0
cnvs.Line arrthepoint(0),arrthepointy(3),0,0


Next i 

I would be grateful if anyone could offer some insight. 

Thank you for your help,
Corona 

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