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Thread: How to get the selected point index with QwtPlotPicker

  1. #1
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    Default How to get the selected point index with QwtPlotPicker

    Hi !

    I plot complex data using QwtPlot, so, I reimplement QwtSeriesData for converting my data into QPointF. The "sample(int)" converts MyObject to QPointf. My QwtSeriesData data manages a myVector=vector<MyObject>.

    Now, I need to select point drawn into my plot. I try to use QwtPlotPicker but it only returns a QPointF.

    Thus, my question is : How to get the index "idx" of the selected point in order to get myObject=myVector[idx] ?

    I don't know if I am clear :-S
    Last edited by lambdacrash; 19th December 2011 at 10:33. Reason: spelling corrections

  2. #2
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    Default Re: How to get the selected point index with QwtPlotPicker

    This has been answered many, many times: please use the archive of the forum.

    Uwe

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