i have declared this..
procedure graph(a:Tlistbox; b:Tlistbox; output:Tpaintbox);
the code doesn't crash but the graph isn't outputted to the Tpaintbox's canvas.
I thought about maybe using a function but how would i output the results to the Tpaitnbox.
the reason for doing this is because i want to make the procedure usable so that i can use more than two list boxes for input data.
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