Qt Widget to display big image & update quickly



  • Hey

    I'm building a buffer to display some data I'm processing. The data size/buffer can vary from 200x200 to 20x20k size. I'm trying to figure out how can I display these pixels rather quickly. From my tests creating every 50ms/1s a 10k pixmap class feels a bit heavy. I tried using some qml widgets and video to treat it as frames, that worked a bit faster but maybe there is a better way? Ideally I'd like to pass an array of data to a widget and then call update() on it every x time to have it re-read data or just update the changed values perhaps? Not sure... does Qt offer any solution for that?

    Thanks!


  • Lifetime Qt Champion

    Hi,

    What hardware are you targeting ?
    When you say 10k do you mean 10000x10000 ?


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