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Thread: Finding QwtPlot child item to detach it

  1. #1
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    Default Finding QwtPlot child item to detach it

    Hello!

    I want to attach a QwtPlotCurve into a QwtPlot and later be able to dettach it. One obvious way to do this is to create the QwtPlotCurve as a global pointer and than just call it lather when desired, but I would like to avoid using a global pointer in this situation since such methodology would force me to have a unknown multitude of global pointers.

    So rather what I would like to do is to create a local pointer to a QwtPlotCurve object, configure it, attach to the QwtPlot and when desired find that child object from the QwtPlot and ask it to be dettached and deleted.

    How could I do this?


    Thanks,

    Momergil

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    Default Re: Finding QwtPlot child item to detach it


  3. #3
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    Default Re: Finding QwtPlot child item to detach it

    Yeah, I did find theese functions, but I wasn't able to use them. First, the detachItems() is not suitable because as far as I understood, I can't say which of the items I want to detach; and I don't want to detach them all.

    news:

    OK, I managed to use the itemList function this way:

    Qt Code:
    1. graphCandle->itemList().at(0)->detach();
    2.  
    3. //This way wouldn't work:
    4. graphCandle->itemList()[0]
    To copy to clipboard, switch view to plain text mode 

    My last question would be how do I identify which is the object I want; for now I'm using the title.


    Thanks Uwe!
    Last edited by Momergil; 17th January 2013 at 00:03.

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