Rectangular zoom

Sep 30, 2013 at 2:51pm
Hi,

I have to implement rectangular zoom on charts. I am using VCL C++. Is there any algorithm to implement rectangular zoom ? I am not able to calculate the relation between position of Horizontal (or Vertical) Scrollbar and zoomed data.
Please share with me some ideas to implement rectangular zoom.
Thanks,
Last edited on Sep 30, 2013 at 2:54pm
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