@MH24
It vaguely, vaguely rings a bell that you have to do something special about root, possibly to do with how MySQL gets installed initially. Lots of hits for Googling mysql root localhost permission. I may have done the stuff mentioned in https://stackoverflow.com/a/46908573 in the past. (Be careful you don't lock yourself out, however!)

But in any case what you have done now is better, as @Christian-Ehrlicher said you should not be using root user for your application.

@JonB
Yes, I asked because this question is related to the first. Sorry if I confused you.

I displayed text data using the displayText() method.

Thank you all very much!

Either I haven't figured out, what you are doing or it's complete nonsense (esp. the boundingRect)
Maybe you can add the rest of your code and a screenshot of how your result looks.

@ugo_ said in How to change cordinate sistem in QGraphicsItem:

I want to plot my custom item inside a chart.

Are you talking about QChart? So you have a QChart and want your item in your chart?!

The problem was that every child widget of the native widnow got it's own window descriptor (HWND), so, for example, if I hit the menubar, in nativeEvent I saw that the message had a different descriptor than the main window had.
This is what solved my problem:

QApplication a(argc, argv); a.setAttribute(Qt::AA_DontCreateNativeWidgetSiblings); //... CEventFilter e{ &w }; a.installNativeEventFilter(&e);

@SGaist

Hello,
my bad. I'm using Qt 6.3.2 on windows 10 and msvc.

@JoeCFD
thank you so much for your reply. you save me from this problem.
i solve this by removing other mingW compiler and it work properly.

I figure out this is because of Q_Object macro I added in those files.
I don't know why the macro doesn't work maybe better open another post.
in other posts people suggest to rerun the qmke to solve this problem but doesn't work for me
anyone know why Q_Object macro doesn't work for android?

@SGaist Great Thank you this, I know that qt has its own MQTT module just I had already developed my code for MQTT using the mosquitto library before I knew I was going to be making a GUI using QT.

I would check the internals of the other platform plugins to see how they are used by these classes.

@MyNick-0 said in Qt6, save TableView record in the database:

How can I consider the data from the model

You set data with setData() and retrieve it with data() as you should already know - if not please read the documentation about Qt's model/view framework

can you bring the code?

I don't write code for others when they don't provide code by themself in the first place so I see that they thought about the problem and tried things out by themself.

Ok, just to finalize this. Instead of the cmake code I attached above to link FFmpeg libraries, I used the same FindFFmpeg.cmake file that used by OBS Studio project on GitHub, and it worked as expected!

I don't know what is the difference yet, I need to read through it carefully and find the differences.

Defining a handler for a property change signal, and then setting a break point in that handler is my usual technique for finding unwanted changes.

Are you using Qt build for android? It is normally under android_* dir and is different from normal build.

I made a rudimentary solution for the problem.

//Read data to QString with a known length void readDataQString(QDataStream &ds, QString &str, uint length) { QByteArray buffer(length,Qt::Uninitialized); ds.readRawData(buffer.data(),length); str = QString(buffer); qInfo() << str; } //Write data from QString without length info void writeDataQString(QDataStream &ds, QString &str) { QByteArray ab = str.toUtf8(); for(int i = 0; i < ab.size(); ++i) { quint8 int_8 = static_cast<quint8>(ab.at(i)); ds << int_8; } QBuffer *internalBuffer = qobject_cast<QBuffer*>(ds.device()); QByteArray ba = internalBuffer->buffer(); qInfo() << ba.toHex(':'); }

I hope this works for everyone.

Thank You. That looks like it might be what I need. If not, it may help get me there.

I will test it as soon as I can. I am having problems with Qt Creator. I just updated to 9.0.0 and now Qt Creator crashes/closes as soon as I try to go to the designer.

I just posted this issue.

@Christian-Ehrlicher Thank you so much. That is a very rookie mistake from my end. Thanks again

@Christian-Ehrlicher
This was the full messages that it printed.

Running C:\Qt\Tools\CMake_64\bin\cmake.exe -S C:/Users/UserName/Documents/Qt_Projects/cmake_with_tests -B C:/Users/UserName/Documents/Qt_Projects/build-cmake_with_tests-Desktop_Qt_6_4_1_MinGW_64_bit-Debug in C:\Users\UserName\Documents\Qt_Projects\build-cmake_with_tests-Desktop_Qt_6_4_1_MinGW_64_bit-Debug. -- Could NOT find WrapVulkanHeaders (missing: Vulkan_INCLUDE_DIR) -- Configuring done -- Generating done CMake Error: Running 'C:/Qt/Tools/Ninja/ninja.exe' '-C' 'C:/Users/UserName/Documents/Qt_Projects/build-cmake_with_tests-Desktop_Qt_6_4_1_MinGW_64_bit-Debug' '-t' 'recompact' failed with: ninja: error: failed recompaction: Permission denied CMake Error: Running 'C:/Qt/Tools/Ninja/ninja.exe' '-C' 'C:/Users/UserName/Documents/Qt_Projects/build-cmake_with_tests-Desktop_Qt_6_4_1_MinGW_64_bit-Debug' '-t' 'restat' 'build.ninja' failed with: ninja: error: failed recompaction: Permission denied CMake Generate step failed. Build files cannot be regenerated correctly. CMake process exited with exit code 1. Elapsed time: 00:01.

I deleted the CMakeLists.txt.user file and reconfigured it from scratch. Now it builds fine and it works like expected.
Thank you so much for your time and your help.