General and Desktop

@ChrisW67 Thanks

@jsulm based on the link, I think this was an answer to an old question.

Hi and welcome to devnet,

From a quick look at the documentation, you are not passing the arguments in the correct order. You need pass the member method first and then the rest of the parameters.

Because of you use not flag (set/unset) but value (like '-n 123'), you should also set valueName... So your code should be

QCommandLineOption NumOption(QStringList() << "n" << "num", "help text", "num");

I ask Qt company to make warning message more user-friendly here.

@nicker-player
The hyphen character (-) is often where word breaking occurs in English. On the other hand the underscore character (_) is treated a s part of a "word" and is not where wrapping gets chosen to occur.

If QTextOption::WrapAnywhere does not work try WrapAtWordBoundaryOrAnywhere just in case that works better. I don't know what to suggest if none of these work.

@nicker-player
You either have a query still active when you attempt to close the database, or perhaps you have kept a QSqlDatabase instance in existence and then are exiting your program. Check https://doc.qt.io/qt-6/qsqldatabase.html#details

Warning: It is highly recommended that you do not keep a copy of the QSqlDatabase around as a member of a class, as this will prevent the instance from being correctly cleaned up on shutdown. If you need to access an existing QSqlDatabase, it should be accessed with database(). If you chose to have a QSqlDatabase member variable, this needs to be deleted before the QCoreApplication instance is deleted, otherwise it may lead to undefined behavior.

Feel free to log a bug after searching to see if one already exists.

@WolfgangGriech hi,

From memory, the suggestion to have a plug-in and separate library is to keep the dependencies down to a minimum because otherwise you would pull the designer library into your application.

Hi @SGaist,
Yeah that was a typo.
And yes, after moving to v6.8.1, it seems that the problem is gone.
Thank you.

That is what I thought. Thanks for the confirmation.

Okay thank you. I am now working on Ubuntu 22.04.5 LTS

I believe I may have only one problem to solve now. How to influence imageformats path looking for imageformat libraries in the source path. All the other plugins are fixed by
QT_QPA_PLATFORM_PLUGIN_PATH=/opt/.../core-64-poky-linux/usr/lib/plugins/platforms

qt.core.plugin.factoryloader: checking directory path "/home/.../projects/.../src/ui/imageformats" ...

You should start with this example to see if it works and then add your function to find out what is going wrong...

@PaulHuber
Yes, as per the answer there. The Application Output pane is only for output. I believe current Creator has an alternative "terminal setting" these days, which allows a genuine terminal with input as well as output allowed if you want to use it that way.

@jsulm I have found a way but I don't know if it will be safe and not degrade the performance of the library.

DEFINES += FTD2XX_STATIC win32: LIBS += -L$$PWD/Static/amd64/ -lftd2xx INCLUDEPATH += $$PWD/. DEPENDPATH += $$PWD/. win32:!win32-g++: PRE_TARGETDEPS += $$PWD/Static/amd64/ftd2xx.lib else:win32-g++: PRE_TARGETDEPS += $$PWD/Static/amd64/libftd2xx.a

I added “DEFINES += FTD2XX_STATIC” before the library file is included.

@Damian7546 said in Convert function to qt notation:

qToLittleEndian(val, &le);

qToLittleEndian writes the result into the memory block the second parameter points to. And you're passing pointer to QByteArray!
It should be:

qToLittleEndian(val, le.data());

@wylun If it's a First Chance Exception then as I wrote two posts above.

@IgKh That was it! I forgot I was hacking around and that did it! Thank you!

@sneha_chavan_07 Then please provide more information. Did you install PyQt5 and how? On which OS?