General and Desktop

@SGaist said in Rendering FHD images as video: You can create it once and then update its content. I've done that. Something kinda like this: void initializeGL() override { initializeOpenGLFunctions(); m_tex = new QOpenGLTexture(QOpenGLTexture::Target::Target2D); m_tex->create(); m_tex->setSize(4000, 4000); // Maximum possible frame resolution m_tex->setFormat(QOpenGLTexture::RGBA8_UNorm); m_tex->allocateStorage(QOpenGLTexture::RGBA, QOpenGLTexture::UInt8); m_tex->bind(1); } void paintGL() override { QImage *img = this->GetCurrentImageFrame(); m_tex->setData(0, 0, 0, img->width(), img->height(), 1, 0, QOpenGLTexture::RGBA, QOpenGLTexture::UInt8, img->constBits()); } But there are no performance improvement. I guess 30 FPS is the maximum my machine can do, so I would just move on with it. Maybe I will implement a toggle so user with more powerful machine can run it in 60 FPS. I will now close the thread, thanks for everyone helping.

Thanks so much! Your response is awesome!

@rupertrupert said in on Dialog box show() is not working but exec() is: after my main window is closed Usually your program would end at this point... Post the related code then... this isn't a Q&A game here. We can't see what your are doing exactly

@Gandalf404 said in How to pass QSqlRelationalTableModel object to a class constructor (from main.cpp): I just trying do not create unnecessary objects of QSqlRelationalTableModel, so i thought better just pass it through widgets Like I've said, create it in your widget where you need it. That would make one instance only. Or for what reason you need it in main()?

@Mark81 I have not checked, but isn't the new row and its record only inserted into the in-memory model at this point, it has not yet been inserted into the backend database? You can still edit/change it in code, before the user performs any edits, and it is not committed until you move off that new row?

I would expect to have somewhere a list of the platform where the value is in use. I haven't checked all the platform backends. Just the Linux ones where I haven't seen the value in use.

@Carlosyoot selectionBehavior : SelectionBehavior enum QAbstractItemView::SelectionBehavior selectionMode : SelectionMode enum QAbstractItemView::SelectionMode

check dependencies ldd path/libibusplatforminputcontextplugin.so export QT_DEBUG_PLUGINS=1 to check if this plugin is loaded or run strace your_app to check if the plugin is loaded correctly. rebuild Qt with flag: -ibus from the source

@dan1973 said in Error while Building Qt 6.8.2 from Source: i want to install qt 6.2.8 in my folder D:\dev\Qt\Qt6 This does not answer @Christian-Ehrlicher questions... First: do not build inside visual studio installation directory. Second: are you sure you have to build Qt by yourself instead of using Qt Online Installer to install Qt?

Shouldn't, but I don't know. As far as links go, these seem to point to a newer version of the code. Bear in mind the original post was 7 years ago ...

Since you are using Q5, it's the GStreemer plugin that you should check.

And what has Qt to do with this? This is a normal windows behavior: https://learn.microsoft.com/en-us/windows/win32/dlls/dynamic-link-library-search-order

Hi @Panda-Pilot, as stated in the bugreport, using an older version 1.41.0 of Copilot.vim should also work. Regards

@VirtualFloat Does the crash occur in a Qt .dll, or inside a foreign dll injected by some security software? The latter is, unfortunately, not uncommon.

i tried signing the app each time but that didn't fix it

@Mark81 said in How to access raw value of foreign key?: Even if the printed filter values are correct, the rowCount() is always 0. This was simple: m->setFilter(QString("%1='%2'").arg(r.displayColumn(), displayValue)); did the trick. Followed by: qDebug() << m->data(m->index(0, m->fieldIndex(r.indexColumn()))); seems to solve the issue. Is my approach correct or is there anything better?

Headers alone don't do anything. Suppose you have a classb.cpp that just includes classb.h. This header first declares the macro CLASSB_H. Then you go on to include all_header.h from classb.h. This first includes classb.h followed by classa.h. However, when including classb.h from all_header.h (included from classb.h) CLASSB_H is already defined and the inclusion returns nothing. So far, ClassB has not been defined. Then you go on including classa.h which expects a full definition of ClassB. This problem only occurs when including classb.h (before any of the other two headers). It is not a problem when including classa.h or all_header.h (first). Using all_header.h as a pre-compiled header will include all_header.h before everything else in every translation unit. That's why this solution works. But IMHO this is not a proper solution because source code should always also compile without precompiled headers. Especially in this scenario a change in ClassA or ClassB will trigger a recompile of the precompiled header and thus a recompile of your whole project. This is not a tenable solution for large projects. Precompiled headers should be reserved for third-party libraries that (almost) never change. It is not meant for your own source code. (Precompiled headers are supposed to reduce compilation times and not increase them.) I am not sure what a good solution to this problem is. Most likely it works by removing the include guards for all_header.h. I believe these are (in this specific context) not actually needed.

@GeoMa said in Qt maintenance tool problem: I tried changing url using -- mirror https://download.qt.io/official_releases with no success Did you try any other mirrors from the mirror list?