I'd like to put the coordinate value like the picture.

[meria0503]

Hello.
I've been writing a lot of questions lately.
There's a lot I don't know yet.

If the mouse moves and moves to that point like in the picture, I want to express the coordinate values in that way

Data is received from DB and entered. How should I express it?

I'd like to add an additional gradation effect, is there a way?

The chart is lineseries.

[SGaist]

Hi,

You should add which charting library you are using. Qwt ? QtCharts ? QCustomPlot ?

[meria0503]

@SGaist What I'm using now is QtCharts.

[SGaist]

Like shown in this example ?

[meria0503]

@SGaist YES. I followed the example over there, and the basic class I use is QMain Window, and the example was using QGraphView all over the country. I'm using QGraphView only for the chart.

[SGaist]

What is the problem with using a custom QGraphicsView in your project ?

[meria0503]

@SGaist I used to use Promote as QChartView for GraphicsView. So in the example, the subclass is QGraphicsView, and I am QMainWindow. Or did MouseMoveEvent not happen because I didn't use Callout?

[SGaist]

I don't follow you. Basically you need to use the combo View + Callout from the example (or implement your own).