Brainstorm

@phreed said in Distribution of Qt via `conda-forge`: What I am looking for is advice on legally distributing Qt. If you plan to use Qt under the (L)GPL license, then you just need to comply with the rules of the (L)GPL license. The git repo git://code.qt.io/qt/qt5.git only goes back to v5.3 The old branches are gone, but the tags are definitely still there. https://code.qt.io/cgit/qt/qt5.git/tree/?h=v5.2.1

Actually, my last remark reminded me that Windows has kiosk mode! https://docs.microsoft.com/en-us/windows/configuration/kiosk-single-app @Qt-embedded-developer - with this approach you don't need to worry, assuming your POS is a sole function of the host.

That's why setModel accepts a base class (usually abstract) so you can use several different models as they have a standard interface. Since you have a model that is used in several other objects, you would create the model in the class that manages all these objects. Model/View does not lock you to the Qt classes. It's a pattern that you can implement in different ways. From your description, it seems to be a good plan.

@Jiri-Rohlicek So it looks like the package manager put it somewhere where your user doesn't have to sufficient permissions. Sadly, I don't know how to fix it.

@SGaist and @Kent-Dorfman Thanks for your inputs.

@Mani_kandan As @jsulm and I have been saying. If you have data in a file you want to encrypt you have to read the file to get the data to encrypt, so there is no point keep asking whether you can do it without reading the file content. If you want to save the encrypted data back to a file you can do that. If you want the encrypted data to end up back in the same file as you read the encrypted data from: either read all the file content into memory, encrypt it, and write it back to the file you originally read from; or, read it a chunk at a time from the original file, write it encrypted a chunk at a time to a new, temporary file, and rename the new file to the original file right at the end.

@Mani_kandan said in in qt using openssl how to encrypt and decrypt the file: So can you help me out how to encrypt the file OpenSSL is not Qt. This is Qt forum. Why don't you read OpenSSL documentation (https://www.openssl.org/docs/)?

Ok, I think that these are the modules under the LGPL. I'm reading right now. If I find some troubles I will write here. Edit: I found this that maybe could be of help to someone.

@Violet-Booth and how is this related to the Qt framework?

If I may, there's no need for the loop, you should be able to directly stream the list object and not go manually with that loop.

thank you, @eyllanesc, now it works as I expect...thank you very much for so much assistance and readiness :)

@eyllanesc, so is there any other way to extract the exact name of the default audio input file? Am I right, that the first element of the returned value of QAudioDeviceInfo::availableDevices(QAudio::AudioInput) is the DeviceInfo of the default audio input device?

@SpyerGame indeed, has been deprecated now four years after I answered this question. Do you mean you would like an alternative ?

@duck18 I am sure this will be much easier with QML

@Piotrek102 Do this in a thread to avoid any delay call(==>as less as possible) since it may take a while to get all storage info. GUI is not blocked in this way.

I've decided to implement something different. Thank you for your reply

Hi and welcome to devnet, Which version of Qt are you using ? On which OS ?

@macfanpl said in Why isn't qt so popular: Really....... @thierryhenry14 meant that development of C++ stopped long ago Thats just wrong, c++20 is a thing, you know, this not just an update for the std-library but includes core features thats compiler vendors have to implement like concepts, three-way comparison etc. and 23++ already has ton of stuff that is in the making, above all reflection (hope never dies :D)