QCustomPlot integration with VS2017

tamirmichael

Hi all and thanks for taking the time,

I use Qt with VS2017 and I try to integrate QCustomPlot. I can configure VS2017 to include the directive '#include "qcustomplot.h"' in the generated sources using the options for the ".ui" file in VS2017, but the logic in the generated code (based upon the ".ui" file) does not spawn an instance of QCustomPlot.
I tried to use Qt creator for that but without success.
Any thought will be much appreciated!

SGaist

Hi,

How exactly are you trying to use QCustomPlot in your application ?

tamirmichael

Hi,

Thanks for replying.

The variable "ui" is an object provided by Qt, such as

private:
    Ui::SampleRenderer ui;

which is defined here (generated code):

(ui_SampleRenderer.h)
namespace Ui {
    class SampleRenderer: public Ui_SampleRenderer {};
} // namespace Ui

which is turn is then included in my class:

#include "ui_SampleRenderer.h"

and finally

ui->plot->xAxis->setRange(0, 6, Qt::AlignCenter);

But the problem is that the member "plot" is not generated by VS2017, which is not surprising due to the fact that there is nothing in the ".ui" file to mandate it.
Can I use QCustomPlot separately?
Can you offer an alternative approach?

tamirmichael

In a sample provided by QCustomPlot I see in the "Ui_????" class:

void setupUi(QMainWindow *MainWindow)
    {
        .....
        plot = new QCustomPlot(centralWidget);

But I don't have this code generated for me....

tamirmichael

I followed the steps here:

https://www.qcustomplot.com/index.php/tutorials/settingup

To no avail - still, building my VS2017 project gives

Severity	Code	Description	Project	File	Line	Suppression State
Error	C2039	'plot': is not a member of 'Ui::SampleRenderer'

jsulm

@tamirmichael said in QCustomPlot integration with VS2017:

But the problem is that the member "plot" is not generated by VS2017

So, you are using QtDesigner to design your UI - is that correct?
This "plot" variable will not be generated magically - you have to put it in QtDesigner like any other widget in order to be able to access it via ui->.

tamirmichael

Hi,

I followed the steps in the integration instructions as posted above but still, VS does not introduce the necessary code.
Maybe I missed a step - those are instructions for the Qt Creator, not designer:
https://www.qcustomplot.com/index.php/tutorials/settingup
But you referred to the designer. Can you please tell me how this can be done there as well? Thanks.

jsulm

@tamirmichael said in QCustomPlot integration with VS2017:

But you referred to the designer. Can you please tell me how this can be done there as well?

It's already done in the tutorial. See the "Promote to..." step.

tamirmichael

OK thanks, will try later once I'm home....

tamirmichael

Problem solved. Thanks for the timely support - much appreciated !