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How to partially change color of each bar in bar chart?

  • I'm using Qt 5.11.3.

    I intend to draw a bar chart like this:
    The chart will display bars which have the bottom part with another color (e.g. black in this snapshot).
    Also, for each bar, I can change the height of the bottom part for any event e.g. every interval....

    Can anyone help to give hints or the approach for this. I'm just newbie with Qt.


  • any suggestion?

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