@Jo-Jo said in Using qt for a commercial application on windows (LGPL): The members of this forum recommend contacting a lawyer to be 100% sure that all LGPL requirements are met, while you recommend listening to a random person from YouTube. So who is right? You have completely confused me. If you want to obtain in-depth understanding on how to use LGPL'ed software in your project (and why each step is needed), watch the video If you want to obtain strong legal protection for your project, talk to a lawyer These paths are not mutually exclusive. They serve different purposes (although they do overlap); both are valuable.

I uninstalled all the version and reinstalled the latest version using installer, it seems to be working better. I am gonna keep an eye on it, if it happens again, I will open this thread again.

@Christian-Ehrlicher @JonB @JoeCFD I have tried the solution, but not GIF image format to work.

Have a look at https://doc.qt.io/qt-5/qtwebengine-webenginewidgets-html2pdf-example.html it uses neither QDocument nor QPdfPrinter

Since you wrote that the example is building successfully, what about copying it and the gradually replace its content with the one from your project ?

This is mostly done through https://doc.qt.io/qt-6/qaction.html#visible-prop and https://doc.qt.io/qt-6/qaction.html#enabled-prop but not by replacing the entire menu bar... Please provide a minimal, compilable example to reproduce your problem (without wxwhatever) - @JonB 's example works fine so proove us and Qt wrong.

@Kevin-Hoang Hi，i tried to call QApplication::processEvents() in the screenAdd event，i found that it has no help. It still does not work. Thanks for your suggestion.

Just make sure that the tex codec for tools is set to UTF-8. I tested on Windows a project: astyle clang-format as external tool (is shipped with Qt Creator) clang-format as part of the ClangFormat plugin See the result below: [image: qt-creator-16-formatting.webp] I think it works as expected. The text doesn't get distorted.

QSslSocket::sllLibraryBuildVersionString() "Returns the version string of the SSL library in use at compile time. " That is, the version of the OpenSSL libraries that the Qt binaries you are using were built to match. This does not mean those libraries are present in your runtime environment: they are detected and used if present. So, your runtime environment needs to have OpenSSL 1.1.1 libraries. You may be able to access a compatible version through the Qt Online Installer. Ensuring it is in the run time environment (application binary directory or PATH on Windows, LD_LIBRARY_PATH on Linux etc.) is largely up to you.

That is basically the approach I am using. Only with a short timer to give up the core for a little bit. Messages average about 1/sec, but we want quick response as part of this effort is to do some timing analysis before creating the final app. I had looked at finish early on as an early approach, but at that point I was looking for an "in-thread" use with a subclassed QThread, and the slot invocations in that case were in the parent thread, not wanted. However, using the Worker pattern, when the finished signal function is called, it is even in the worker thread, which appears to solve my problem for now. Thanks, Dale

@CristianMaureira Thank you, this is exactly what I was looking for. I have no idea how I didn't find it while googling.

can you show Kits->TextEditor tab?

@Aleksey_K said in QML runtime error: module "Qt5Compat.QtGraphicalEffects" is not installed: Unfortunate MultiEffect is buggy comparing to ColorOverlay - it does not color my icon in some cases, so forced to rollback to Qt5Compat.GraphicalEffects. Found solution for the full replacement: https://forum.qt.io/post/807844 Need to set brightness: 1.0, however now "transparent" color does not work if I need to keep original color unchanged, Probably need to add more complex logic to hide MultiEffect and show original Image. So still on ColorOverlay.

@cristian-adam Thank you, I will.

@james-b-s Then I think you have a problem! I believe to disconnect a lambda explicitly (if you cannot introduce a slot object) you need to store the result of the connect() and pass that to disconnect(). But presumably you cannot do that either if the code you show is untouchable third-party? P.S. If you're interested in a discussion on this slot-lambda-functor-without-slot-object destruction problem read through https://interest.qt-project.narkive.com/AiSB9wkP/who-disconnects-lambda-expression-slots from when it was raised 12 years ago :)

@mirro I already answered: @JonB said in How to kill yourself in qt program?: @mirro Why not tell us whether in that case your SERVICE_CONTROL_STOP code is actually hit, or would you like us to guess? Do you not think we need to know whether your function is being hit? Just pasting more code and not telling us what does/does not happen is not helpful when asking a question. Also this now a Windows programming question, nothing to do with Qt.

@SimonSchroeder I need to get my glasses fixed ! I missed the ; while reading 😅

I tried it a while ago, when I was first starting with Qt...and yeah, doesn't sound so great. The reason why is already explained by SGaist. I tried a lot of options on Linux (KDE Neon, Fedora), and RHVoice seemed to sound best, but still not quite there, and I'm not sure how are things now, but, if it helps: https://stackoverflow.com/questions/76094006/how-to-use-rhvoice-via-speech-dispatcher-in-qt Try different voices and voice settings, or look for other options, perhaps new ones exist now. I'm also interested to see if anyone has suggestions.

I created an issue: https://bugreports.qt.io/browse/QTCREATORBUG-32747

@JonB Xcode is the macOS IDE offering for development for ANY Apple OS. I have been using it, on and off, since 2006 without too much in the way of problems but Xcode has changed a lot since I last used it in 2021 hence my rustiness. :-)