General and Desktop

Hello all, I was able to complete the project. For this project as i required the need to replicate/mirror the area enclosed under the transparent rectangle, I made the use of ShaderEffectSource along with grabToImage which helped me to get what I was trying to achieve out of this project. Let me know if someone requires the code to checkout. Thank you!

@Matcha2024 Welcome to the Qt Forums. What your unspecified operating system does when you right-click on its desktop is down to that operating system. What that has to do with an unspecified version of Qt Creator, installed in an unspecified way, is not clear. I am only guessing at your problem because the description is so poor.

@ModelTech said in QProcess::execute works, QProcess::startDetached doesn't: When I do a normal run, the QTemporaryFile is not created at all, It does get created. I assume you have a stack-based QTemporaryFile object so that, "the file will subsequently be removed upon destruction of the QTemporaryFile object." So as you leave that scope the file vanishes. Whether your child process ever sees the file will simply be a race. I expect that the process starts faster than the code finishes the scope rarely, if ever. Look at QTemporaryFile::setAutoRemove() to alter that behaviour. Your child process needs to clean up the temporary file itself. while it does get created when I run stepwise in debug mode. Yes, while you are paused inside the scope that contains the QTemporaryFile object the associated temporary file will exist. But even then, there is a problem with the executed process in that Qt Creator seems to set PYTHONHOME which it shouldn't as that breaks the called process for using a different Python installation... Qt Creator, by default, just passes on the environment it inherited. This is all configurable in the project settings. [image: c53b7325-4428-47ae-b0fb-b37ea62f108b.png] [image: aa7fe25b-7793-45bf-9edd-4a82ead35e91.png]

@Ben-ny Please create a minimal, compilable reproducer.

@gfxx hi, Why te-implement QLCDNumber ? Simply connect your logic to the signal that will change the value of QLCDNumber

@AnneRanch Hello from freezing Oslo, does the project build or configure (=run CMake)? I guess the latter, because I wouldn't to of automagic builds. Uncheck Edit->Preferences->CMake->Autorun CMake

@JacobNovitsky TARGET should just contain the name of the library. Nothing else. No prefix, no suffix.

@HyEISN When you have a GUI program that does not normally produce any output, neither on stdout nor stderr. I am not sure what you are saying you see from where under what circumstances. In principle the code you showed is fine. If, say, you make the sub-process program a console application and have it just go like printf("Hello world\n") and exit you should find you receive that string back in your calling (UI) program. Does that work?

Solved ! I had to add a subdirectory "scxmldatamodel" in the directory of the deployed app, with the library "libqscxmlecmascriptdatamodel.so" in it, then ldd indicated that the library "libQt6Qml.so.6" had to be added too. Then everything works perfectly. Thanks to all for the suggestions and support.

@Super_QT_Enthusiast Looking in the source, I would expect you should have a FindDLT.cmake file in cmake's search path so that: find_package(DLT REQUIRED) might get closer to the result.

@JacobNovitsky said in How to link .so files's header to other project: but still it calls 30-60 seconds per build Are we talking about complete rebuild of the project or incremental builds after changing some parts of the code? How big is the project (how many lines of code)?

I feel like everyone's response. Currently, I have negotiated with my team to compromise on using only one process to scan Ble. In addition, I have found that the debugging program outputs "qt. bluetooth. winrt: onBluetoothLEDeviceFound: No device given"? It's strange, but I didn't set a situation when running it

Do you use Qt6. 7 on win11? Then you are probably using the windows 11 style.

I changed the code to this and it works connect(server_,&QTcpServer::newConnection, this, &TcpServer::NewTcpConnection); Thanks,

@mashewt hi, What exactly did you install ?

@hskoglund I just tried, it did not work. I understand the bug now (at least I believe I do): https://www.toptal.com/qt/qt-multithreading-c-plus-plus Tasks that don’t need the event loop. Specifically, the tasks that are not using signal/slot mechanism during the task execution. Use: QtConcurrent and QThreadPool + QRunnable. Tasks that use signal/slots and therefore need the event loop. Use: Worker objects moved to + QThread. I was hoping to avoid digging deeper into multithreading and instead using QtConcurrent::mapped() but it seems I will have to dig deeper.

Hi Try to using symlinks. F.e.: base subprojects (git repo every): simple_txt_handle simple_statistic simple_int_handle simple_statistic simple_statistic if main prj using all of above subdirs, than duplication occur. To avoid duplication may using symlinks. So, simple_txt_handle symlink[simple_statistic] simple_int_handle symlink[simple_statistic] simple_statistic result: simple_statistic alone in project, git ok. my OS: win10, NTFS