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Dragging a 'constant lines'


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For the moment, the user can click on the Chart to define a constant line. I would like to allow them to move this constant line.

Just wondering if there is a simple way to allow the user to drag a constant line into the Chart with the mouse ?

(the m_pChartFX->AllowDrag = TRUE; concerns only the curves and not the constant lines)

Best regards,


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  • 5 months later...


I solved my problem.

I used the example delivered with the software, reacting on mouse events. i do not know if it was the best solution but it works for me if i drag not too fast the constant line. if you are interested the code is in attached file. (of course you need dll file from ChartFX to make it work.)



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