Custom QtChart promote

LISP

I want to connect "QtChart" to "Custom widget".
I downloaded the file in the path below.
https://doc.qt.io/qt-5.12/qtcharts-zoomlinechart-example.html

And I created a widget in my project and set "promote" as follows.

Base class name: QWidget
Promoted class name : ChartView
Header file: chartview.h
global include : unchecked

but the result is a debugging error
ui_mainwindow.h
chartWidget = new ChartView(gBoxChart);

The parameters of ChartView are created strangely.
It seems to be affected by the ui's widget's parent.

I modified ui_mainwindow.h myself, but when I rebuild it, it goes back to the old state.

chartWidget = new ChartView(chart);
I want to edit it, but it doesn't work.

What did I do wrong?
Thank you for reading my poor English.

Christian Ehrlicher

Neither - create a ctor which takes QWidget *parent like the base class does: https://doc.qt.io/qt-5/qchartview.html#QChartView

Pl45m4

@LISP said in Custom QtChart promote:

I modified ui_mainwindow.h myself, but when I rebuild it, it goes back to the old state.

Because you dont need to nor should modify it yourself.

but the result is a debugging error

What error exactly?

LISP

Thank you for your reply.
ui_mainwindow.h
chartWidget = new ChartView(gBoxChart); ////This code is an error.
error : no matching function for call to 'ChartView::ChartView(QGroupBox*&) in file included from ...

I don't think chartview can have gboxChart as a parameter.
So I modified the ui_mainwindow.h myself.
However, it is an auto-generated code, so when it is build, it is restored as it's original state.

Christian Ehrlicher

You must modify your ChartView so it takes the QWidget parent as first parameter. Otherwise uic can not generate the code for it.

LISP

@Christian-Ehrlicher
Thanks for the good info.
try one thing or another...
ChartView(QChart *chart, QWidget *parent = 0);
-> ChartView(QWidget *parent = 0, QChart *chart); ?
Sorry.. :'(

Christian Ehrlicher

Neither - create a ctor which takes QWidget *parent like the base class does: https://doc.qt.io/qt-5/qchartview.html#QChartView