retrieve points from a graphical cut

Hi,

        I need to locate two points to set the fitting limits to a gamma peak. How can I locate two points graphically?

My solution thus far has been to make a graphical cut,

  TCutG *gcut = (TCutG*)gPad->WaitPrimitive("CUTG","CutG");

But, how do I retrieve the points I click?

Thanks,
Ricardo

-- 
Ricardo Yanez
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