I want to apply a chart theme to a specific widget.

[meria0503]

I saw an example of chartheme, and the example is a method of applying it by setting it as global, but I want to apply the chart only. How shall I do it?

[JonB]

@meria0503
What is a "charttheme", and how is it set, globally?
If it is CSS you can apply that to any QWidget-derived element via setStyle() and it only applies to that element downward (i.e. it descendants), so put it on whatever the closest widget ancestor to your chart is.

[meria0503]

@JonB

Can I apply only graphView as stylesheet?

https://doc.qt.io/qt-5/qtcharts-chartthemes-example.html << I think this example applies globally. I just wanted to apply that graph. It just didn't work out.

[JonB]

@meria0503
I see in https://doc.qt.io/qt-5/qtcharts-chartthemes-example.html#changing-theme:

The user can select a built-in theme to be used in the example. This theme is then applied to all charts in the layout.

QChart::ChartTheme theme = static_cast<QChart::ChartTheme>(
            m_ui->themeComboBox->itemData(m_ui->themeComboBox->currentIndex()).toInt());
chartView->chart()->setTheme(theme);

I know no more than what it states there.