Q:how to select region of graph

hello there,

I am struggling to get something done.
What I want to do is to select certain range of graph.
Color of each point is going to be changed accordingly
on the event.

|
|
| +----------+
| | $$$ | * *
| *** |$$ $$ | *
| ********| $$$| *
| +----------** *
| **
+-------------------------------------


|
|
| +----------+
| | $$$ | * *
| *** |$$$$$$$ | *
| **** *****|$$$$$$$$$$| *
| ***********|$$$$$$$$$$|* *
| ***********+----------+**
+-------------------------------------

Currently I am using teechart and wonder how I can do that
using it or other controls. Any pointer or basic code sample
would be really appreciated. Thank you.

JK Jung
onionsjk@xxxxxxxxx
.

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