if I have opened 20 charts I only want some calculations done on the chart I am currently watching. So it might be useful for an indicator to check if a chart is currently active. I found a solution here:
but this posting is from 2010 and I wanted to ask if the new MQL4 offers a better way to do that. I see that CHART_WINDOW_HANDLE wasn't available in 2010. So my question is do I still need some Windows-functions or can it be done by MQL4 only?
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