instead of setContextProperty() you should use QML_SINGLETON
see: https://t1p.de/ekkeQML_SINGLETON

@SimonSchroeder OKay thanks.We shall see when he explain more

@Venkat_QT I did it. Thank you.

@sierdzio Thank you very much for the answer. I tried some tips, but unfortunately not all were applicable in my case, since let's say the same Q_OBJECT is missing in Qt microcontrollers. And in the examples that I'm looking at, it seems that there is no such thing (Q_OBJECT), which is why I ran into a problem, since everything works in the usual Qt for Desktop but not in Qt MCU

Ok thanks! I think I understand what I have to do

@jsulm said in How to exploit a json file in QT ?:

@feedain You already have this code snippet here, did you notice it?

obj["State"] = int(state);

yes thanks

@JonB
Thanks.. found out, that i needed to create a new Pointer in the Declaration of the .h File..

Means..

TGS_Widget_AssetList * _assetList;

Wasn´t enough...
I needed to do:

TGS_Widget_AssetList *_assetList = new TGS_Widget_AssetList(this); or auto *_assetList = new TGS_Widget_AssetList(this);

Now it works.. i will update my initial post here

Anyone?
T_T

@jsulm & @J-Hilk

Thank you so much. You´re my Heroes :D

Everyday something new to learn :)

Thanks Guys.. helped me out alot :D

Take a look at VXYModelMapper . It lets you create series from a QAbstractTableModel with not all the glue code you did here.

@aria_aa said in how too add an exciting ".ui" file to a "cpp widget application project"?:

What should I do?

clean up the build directory run qmake rebuild project

Should work, code looks good.

And another question:
what is #include "ui_window_no_000.h" and #include "ui_window_no_001.h" in cpp files?
there is no file such as ui_window_no_000.h or ui_window_no_001.h in project.

These files are automatically generated from your .ui files by uic. It's part of the build process in Qt, same as with it running moc to generate meta-object functionality.

@eyllanesc Works like a Charme! Thanks Mate!! :D

@elypheldia said in How I listen serial port with writing client code?:

Sorry if used the wrong term. I am new on qt. I wanted to indicate that I read the data I wrote to the tnt0 serial port from terminal with using cat /dev/tnt0. But How can I do this with client code instead of reading from terminal. I just wanna open the tnt1 serial port from code., and I wanna read from there.

You are confusing to me.
Do you want to use /dev/tnt0 or /dev/tnt1?

With the code example you have provided, you are writing hello on serial device /dev/tnt0. Is this working?

You have defined a slot MySerialPort::readData() , which is called when data are ready to be read from serial port.
I have proposed you some changes to display debug message when slot is called. Is this slot called?

I don't know:

what kind of device is connected to this serial port? if the serial port configuration is correct according to attached device? the attached device communication protocol: It is a binary or text protocol? Are carriage return or line feed required?

@J-Hilk Thank you all guys for your patient and sorry for my basic mistakes :). I fixed my issue. As you said, I expect the read without writing a data to serial port.

Well, there's nothing to fix, the output matches what your test does.

@BDC_Patrick said in Get all Widgets of Type <Type> ?:

But, this only works, if i put the code directly into the construct function of the Window itself (after ui->setupUi...).

Why? It's QObject::findChilden(), you can use it for any widget.

But, i thought more of a Function in a seperated file, that all Windows can make use of.

If you really want it in a separate file then pass the parent widget as a parameter.

Are you using Qt's support for cross-language?

@yellowlemontree2014 If you are serious about applying, read in the post what you need to do to apply ;-)