Brainstorm

FWIW, if you make your project open source under GPL license, and not planning to sell devices which runit as a part of firmware, you can also ignore all license stuff and be safe. But if you are planning to produce such devices, it's better to consult a lawyer, though it's still possible to do with open source Qt if users can reflash device or have read-write access to its file system and can build their own Qt for them.

Hi @ludek-vodicka,

But who you think to contact? These AV companies?

Yeah, these are the only ones that can update their whitelists.

Regards

@Vova-Shevchyk this is a bit old, but I want to check how's the work on this website going?

Hi,

If you'd like to interact with Qt developers, you should rather post your Qt6 related questions on the interest mailing list. You'll find there Qt developers/maintainers. This forum is more user oriented.

In that case comment all the code that makes the test crash and te-add stuff gradually until the test starts to crash again. It should give you clues about what is going on.

And further to what @SGaist has just said about licensing required for static, I would have thought you would probably run the same risk with your "all Qt DLLs into one DLL". The LGPL requires users should be able to just use a new set of Qt DLLs with your software, recompile Qt for themselves etc., and that might not hold (in a straightforward fashion) if you start replacing the standard, freely available Qt DLLs with some concoction you create yourself.

@zed962 could you please help me to creating my own tiling process for large images (Reading the image, dissecting it to multiple tiles and loading tiles accordingly).

I am thankful to you.

I downloaded subversion however I couldn't integrate with my code. Should I add all the header files to my project? I am very new to C ++ programming sorry and thanks for help .

Hello,
Thank you for your help

i used ".disconnect" to disconnect the previous json and then import the new json file

Thank You.

@sierdzio thxs ! i did not know NUC
it looks very close to what we need, thank you

Thank you for these informations.
It is important to know that Qt is not exclusively a nice tool for GUI, and it makes live easier also for other things like managing files.
We start studying it more seriously.

@Lezginohohol
Did you try the sample code in macOS ?

I did test on Windows, Ubuntu & macOS.
It works fine.

Yep...I should have specified "this" as the first argument in the invokeMethod() call. Seems to be working now. Here are some snippets:

UdpSocket::UdpSocket(QObject *parent) : QObject(parent) { bool rc; // set up addresses. m_addrRecv.setAddress(QHostAddress::AnyIPv4); m_addrSend.setAddress(MCAST_GROUP); rc = QMetaObject::invokeMethod(this, "sendDiscoveryMsgs", Qt::QueuedConnection); } void UdpSocket::sendDiscoveryMsgs() { qnil = QNetworkInterface::allInterfaces(); // for each viable interface, create and configure a socket. for (it = qnil.begin(); it != qnil.end(); ++it) { sock = new QUdpSocket; sock->bind(m_addrRecv, MCAST_PORT, QAbstractSocket::ShareAddress | QAbstractSocket::ReuseAddressHint); QObject::connect(sock, &QUdpSocket::readyRead, this, &UdpSocket::checkResponse); m_sock = sock; // the send() below uses m_sock. send(str); } } void UdpSocket::checkResponse() { int rc = recv(); if (rc == 0) // got a valid response { if (m_msgStr.find(MsgTypeText[MSG_DISCOVERY_ACK]) != string::npos) { m_sock = qobject_cast<QUdpSocket *>(sender()); m_qni = new QNetworkInterface; *m_qni = m_socketInterfaceMap[m_sock]; QObject::disconnect(m_sock, &QUdpSocket::readyRead, this, &UdpSocket::checkResponse); QObject::connect(m_sock, &QUdpSocket::readyRead, this, &UdpSocket::recv); QObject::connect(m_sock, &QUdpSocket::disconnected, this, &UdpSocket::reconnect); } } }

I have a minor memory leak in that I don't destroy the unused sockets after I find the right one, but this way I don't have to maintain a list of the sockets while I'm trying to determine the "good" one.

Thanks for the help.

@Kent-Dorfman Good timing. There is a 2-day intensive workshop this coming Monday for improving the docs: https://blog.qt.io/blog/2019/03/01/the-future-of-documentation/

I encourage you to get in touch with Paul Wicking ASAP by posting in the blog comments, so that your complaints can be taken on board during the workshop.

Hi and welcome to devnet,

Do you mean like the QtVirtualKeyboard module ?

@BeastBook

ID = "+36+" and not working with with this "'+36+'" .I am little confused it worked with ' ' when i use for editing updating inserting but not for searching

Your ID column holds an integer, not a SQL string. You should not be quoting it (inside ''s) whether in a WHERE or INSERT or UPDATE, then you won't have consistency issues.

Hi,

While it could be interesting to play with the examples live, it would make the documentation way heavier to build and store.

what is your suggestion about server app design ?

People usually refer to "server app" as "middleware" or "web application". There are tons of web frameworks and ORMs for various languages including Java and C# on "enterprise" side and scripting languages (pphp, python, perl, ruby, node.js). C++ is not really convenient language here. As for protocol, if you are not pursuing real-time data processing with lowest possible latency, it makes sense to use REST API on top of HTTP, so that on server side you have the most typical "web app" with ORM inside and REST outside, and on client side you can easily add web client if needed, and even if not, you get some additional convenience as compared to e.g. RPC over plain TCP