General and Desktop

Thanks very much, not sure how I didn't find that in my searching. In the meantime it turned out to be quite easy to code it myself, and I ended up knocking up a function which could vary the saturation, rather than just making it greyscale. Here's the code below in case anyone finds it useful. img is a QImage and v is a float. v=0 will give black and white, v=0.5 will halve the colour saturation. v=2 will double the saturation, but I haven't added any min() or max() in the example so that would need to be added if v>1. for x in range(0, img.width()): for y in range(0, img.height()): c = img.pixel(x, y) r1, g1, b1 = qRed(c), qGreen(c), qBlue(c) grey = (r1 + g1 + b1) / 3 r2 = grey + (v * (r1 - grey)) g2 = grey + (v * (g1 - grey)) b2 = grey + (v * (b1 - grey)) img.setPixel(x, y, qRgb(int(r2), int(g2), int(b2)))

@SPlatten , What I found that works: QObject::connect(truth::mspSpinMax, QOverload<int>::of(&QSpinBox::valueChanged), [this](int intValue) { emit maximumChanged(intValue); } );

@Rapidrain Did you try with a more recent Qt and MinGW versions?

@jsulm Thanks.

MD/MT is unrelated to the type of libraries you are building, they are related to the runtime used by your library/application. A static library can have dynamic dependencies. As for .lib files, they are both for static libraries as well as import libraries. The import libraries is usually small and will only contain the information required to link the library and you will need the .dll at runtime. Unless you have a really small library, the usual way to check which version it is is the size of the .lib file.

It's hard to say anything useful without code to demonstrate the problem.

@eyllanesc Yeah, I didn't know if I needed to create a class to inherit from QLabel for that. Need to promote a label in designer but I wanted to make sure that was the simplest way. Thanks for the quick response!

What do you mean by entire space ? Can you show a picture of what you get ? What do you expect exactly ?

I am facing the same issue. Did you get any leads on how to support the HideKeyboardKey? Please let me know.

@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?

@jsulm Thank you very much

The reason linuxdeployqt does not support your latest ubuntu is not, that its not up to date, but it is on purpose. If you build your appimage on a new linux and then want to run it on an older installation it might not work there since e.g. the libc version on the older system does not support new features that have been added. And running on any system is the whole point of the appimage.

@RootLearner Oops, I forgot to point out that you have to add: ui->tableView->setItemDelegateForColumn(column1, new ImageDelegate); ui->tableView->setItemDelegateForColumn(column2, new ImageDelegate);

Well if you start the app on a different layout (in our case, a different language), you might not notice it and the we would expect 'a' but get a ש. This is problematic. Maybe my phrasing wasn't right, it's more about the language and not the layout.

@mrjj Thank you very much, It works!

Qt Creator uses Clang for code model, so it will show warnings for MSVC specific stuff sometimes. You can safely disable this warning by going to Tools -> Options -> C++ -> Code Model. Click on the Diagnostic Configuration button and in the dialog that opens select "Build-system warnings". Click on Copy and give the new configuration some friendly name. Select that new configuration and in the Clang Warnings below add -Wno-ignored-pragma-optimize. This will disable this particular warning in the ui. Don't worry, it will not affect how the code is compiled or what warnings are issued by the compiler. You can add more exclusions here if you ever find other MSVC specific differences.

@JonB Thanks !! That was the issue. Index of JsonArray was the problem. I solved it earlier.