Qt custom widgets

[mkoller]

Yes, it's using openGL. It's based on http://doc.qt.io/QtDataVisualization/

[bhavna]

Hi,

OS: Windows 7
WinCCOA 3.11+SP1

I have a similar query. I have attached an image of CRO traces being displayed using some other software. I want to display similar plots in WINCCOA panel. Is it possible using already given widgets or I need to use QT custom widget and make an EWO ?

Regards,
Bhavna

[leoknipp]

Hello,

we cannot see the attached image. Maybe the upload failed.

Best Regards
Leopold Knipp
Senior Support Specialist

[bhavna]

Hi,
I have tried to attached the file(CRO.png) again. But somehow it is not getting displayed in the message. Pls suggest.

Regards,
Bhavna https://www.winccoa.com/fileadmin/image ... es/cro.jpg

[amitgolhani]

Hi Bhavna,

If you are planning to use amplitude and time division plot and planning to display peak-peak and other details similar to CRO then you need to prepare your own CRO widget. You may explore trend widget and check if it can meet your basic CRO requirements.

Best Regards,
Amit Golhani

[bhavna]

Thank you Amit,

I have already checked for such widget in WINCCOA. I could not find something that could plot 4 arrays (waveform of 400 element each) over a timeline/sample number. These waveforms are read from CRO eevry second over TCP/IP.

I will try EWO with QTcustom plot widget.

Regards,
Bhavna

[Andorhal]

Hello.

There seems to be a problem with the image upload functionality, you can upload the image as file.
You may look at my post here:

[bhavna]

Thanks. I could upload it as file.

[amitgolhani]

Hello,

Can we use SVG based Qt custom widgets to prepare EWO? We are planning to use to SVG for animation, and to control SVG animation we will add controls in widget.

Best Regards,
Amit Golhani

[mkoller]

You can of course paint SVG images inside your class::paintEvent(), if that's what you mean.
(e.g. we do this in the DialGauge.ewo. We use QSvgRenderer to render the SVG into a QPixmap and paint the pixmap inside the paintEvent, which is faster than always rendering the SVG in paintEvent())