Qt 6

Thread affinity is a hard concept. QThread should be seen as a "thread handler". It has affinity with the thread that created it. The actual new thread handles the run method. Whatever you create in that method will have an affinity with the thread handled by QThread.

@Eirik said in QProperty; binding and onValueChanged: order of calls seems not to matter It may be a bug, I suggest you post on the interest mailing list where this can get more exposure (you can reference this forum thread in your mail).

You have to wait() until the thread had time to shut down. Also you should not connect Sender::finished to deleteLater but the QThread's finished signal to deletedLater.

Thank you! The website clears things up for me :)

@Christina123 Well it was good you found it. No worries. Calling the base version is ultra important in most cases when using Qt so if you walk away with that knowledge extra, it was all worth it :)

@Christina123 Use QDataStream: // QPainterPath to QByteArray QByteArray ba; QDataStream ds(&ba, QIODevice::WriteOnly); ds.setVersion(QDataStream::Qt_5_15); ds << path; qDebug() << ba; // QByteArray to QPainterPath QPainterPath path; QDataStream ds(ba); ds.setVersion(QDataStream::Qt_5_15); ds >> path; qDebug() << path; And knowing that QDataStream supports QVector then in your case the code doesn't change much: // QVector<QPainterPath> to QByteArray QByteArray ba; QDataStream ds(&ba, QIODevice::WriteOnly); ds.setVersion(QDataStream::Qt_5_15); ds << paths; qDebug() << ba; // QByteArray to QVector<QPainterPath> QVector<QPainterPath> paths; QDataStream ds(ba); ds.setVersion(QDataStream::Qt_5_15); ds >> paths; qDebug() << paths;

There are a lot of reasons for paintings to happen. Moving the window, having something else coming through said window, etc.

It should be paintEvent, not paintevent. When overriding virtual members use the override keyword in the header. It will help you catch typos like this. Also, since you're passing the path through a pointer, make sure that path object is still alive when paintEvent is called, otherwise that's undefined behavior.

@Chris-Kawa Thank you for point them out to me.

To ensure which are called use Q_FUNC_INFO in your debug lines. There's no need for the installEventFilter call. You cannot paint on a widget from a different one. The correct way is like you started with QFrame, then override paint event, call the base class implementation and do your own painting afterward.

@Ketan__Patel__0011 please do not use QRegExp, it was deprecated in Qt 5 and removed in Qt 6. Use QRegularExpression.

@Christina123 Use mousePressEvent, it provides the cursor position as parameter https://doc.qt.io/qt-5/qwidget.html#mousePressEvent

Well, turned out my qmldir was incorrect. it is strange that it worked under QT5 however. Cyrille

Doh! There's a Conan option qt5compat.

Please read https://forum.qt.io/topic/121651/read-before-posting-in-this-category Moved to Qt6

@SGaist Please excuse my horrible grammar and form of the post. I am sure that dropping qmake_paths will work; however, it took a very long time to process until the final error, but my question was about the qt3d product that was formed: It looks complete and good. Stop! The Linux qt3d install finally worked! Here is what I used: export PATH=/home/bob/Qt/Tools/bin:/home/bob/Qt/Tools/Conan:/home/bob/Qt/Tools/Ninja:$PATH cd /home/bob/Qt/Conan3D source /home/bob/vulkan/1.2.170.0/setup-env.sh conan install qt3d/6.0.1@qt/final --build=missing --profile=/home/bob/Qt/Tools/Conan/profiles/'''qt-6.0.2-gcc-x86_64''' -s build_type=Release -g cmake_paths -g=cmake -g deploy -g=qmake To remove the conan locks I had to use: /home/bob/Qt/Tools/Conan/conan remove -l As to the Win 10 qt3d, the following lines of the Linux install make me believe that I need to redo it: qt3d/6.0.1@qt/final: Package 'a39b4915813a92b93e8b0ff2f505771141766338' created qt3d/6.0.1@qt/final: Created package revision 780334a95b0b0590268c0f5957052806 Generator txt created conanbuildinfo.txt Generator cmake_paths created conan_paths.cmake Generator qmake created conanbuildinfo.pri Generator deploy created deploy_manifest.txt Generator cmake created conanbuildinfo.cmake qt3d/6.0.1@qt/final deploy(): Copied 814 '.h' files qt3d/6.0.1@qt/final deploy(): Copied 27 '.prl' files qt3d/6.0.1@qt/final deploy(): Copied 288 files qt3d/6.0.1@qt/final deploy(): Copied 13 '.json' files qt3d/6.0.1@qt/final deploy(): Copied 9 '.o' files qt3d/6.0.1@qt/final deploy(): Copied 176 '.cmake' files qt3d/6.0.1@qt/final deploy(): Copied 12 '.1' files qt3d/6.0.1@qt/final deploy(): Copied 39 '.pri' files qt3d/6.0.1@qt/final deploy(): Copied 12 '.so' files qt3d/6.0.1@qt/final deploy(): Copied 8 '.qmltypes' files qt3d/6.0.1@qt/final deploy(): Copied 15 '.a' files qt3d/6.0.1@qt/final deploy(): Copied 12 '.6' files qt3d/6.0.1@qt/final deploy(): Copied 12 '.debug' files qt3d/6.0.1@qt/final deploy(): Copied 2 '.txt' files: conaninfo.txt, conanmanifest.txt Thanks for all your help, I am sure I will have more questions as I try writting qt3d programs.