<![CDATA[Transparent background: QChartView]]>I would like to create a QChartView with transparent background, I mean, no white default background.

I tryed:

legendView->setWindowFlags(Qt::FramelessWindowHint);
legendView->setAttribute(Qt::WA_NoSystemBackground);
legendView->setAttribute(Qt::WA_TranslucentBackground, true);
legendView->setAttribute(Qt::WA_TransparentForMouseEvents);
legendView->setWindowOpacity(0.5);

and

chart->setContentsMargins(0, 0, 0, 0);
chart->setBackgroundRoundness(0);

But I got always the same white background.
4af6927d-c792-4bb3-9d79-32eb1a66072b-image.png

How can I do this?

]]>https://forum.qt.io/topic/108340/transparent-background-qchartviewRSS for NodeTue, 17 Mar 2026 00:01:10 GMTWed, 30 Oct 2019 17:24:56 GMT60<![CDATA[Reply to Transparent background: QChartView on Wed, 30 Oct 2019 21:35:11 GMT]]>Hi,
Try using QChart::setBackgroundVisible:

chart->setBackgroundVisible(false);
]]>https://forum.qt.io/post/559139https://forum.qt.io/post/559139Wed, 30 Oct 2019 21:35:11 GMT<![CDATA[Reply to Transparent background: QChartView on Thu, 31 Oct 2019 13:12:58 GMT]]>@SamurayH Thank you so much! I'm looking for this line for hours in the Qt documentation...

]]>https://forum.qt.io/post/559309https://forum.qt.io/post/559309Thu, 31 Oct 2019 13:12:58 GMT<![CDATA[Reply to Transparent background: QChartView on Wed, 30 Oct 2019 21:35:11 GMT]]>Hi,
Try using QChart::setBackgroundVisible:

chart->setBackgroundVisible(false);
]]>https://forum.qt.io/post/559139https://forum.qt.io/post/559139Wed, 30 Oct 2019 21:35:11 GMT