Hi, Something's not clear with your code, you return a QQmlListProperty<MyObject> while mMyObjectsList is a QQmlListProperty<MyObject*>. Also why are you calling (&mMyObjects)->values(); and not mMyObjects.values();?

super, thank you! that solved my litttle problem.

@Jeff-Andle If you do not like that cleanup or if it is too hard to decide whether to free the memory you can use one oft these. QSharedData QSharedDataPointer QSharedPointer I have used QSharedDataPointer (but not the others so far), and it seems to work nice.

@Chris-Kawa Thanks for the reply I messed up as you mentioned above . I used your code to make it work. thank you ;) QList<QColor> colors = { QColor::fromRgb(0,102,104,255), QColor::fromRgb(102,102,104,255), QColor::fromRgb(0,0,104,255) }; for(int i = 0; i < colors.size(); ++i) combo->setItemData(i, colors[i], Qt::BackgroundRole);

at funtion gerarRelatorio i swap the qDeleteAll on line down(original position). and it worked. qDebug()<<"Documentos processados para a Tabela de Relatorio"; acessodb::setDataUltimoRelatorio(idEmpresa,idCliente); qDeleteAll(listaDocumentos); listaDocumentos.clear(); delete modelo; return true; I now will upload to my test server, and see what happens. i doesn't care any more about what is causing the problem, i just hope that is solved.

error: invalid application of 'sizeof' to incomplete type 'QStaticAssertFailure<false>' enum {Q_STATIC_ASSERT_PRIVATE_JOIN(q_static_assert_result, __COUNTER__) = sizeof(QStaticAssertFailure<!!(Condition)>)} I have just read that: Values of a registered type can be constructed dynamically via QMetaType::construct() There is an example in the link above. Thanks for your help! I will figure it out, still missing pure c++ knowledge ;)

I couldn't quite believe that this could be an actual bug, so I kept testing. And the result... oh well... I'm truly ashamed... I have included QDataStream in every file... except the one I actually tested. So the solution is: #include <QDataStream> Facepalm Thanks for your tips, I'm now gonna implement what you told me.

@maximus Sometimes the answer is right in front of you :)

@Afterwork said: I recreate them every time. Are there better way ? If they change then there's no way around it but if they're the same every frame then it's a waste of time. Generate the list once, store it as a class member and just expose them by reference e.g. //split that to .h and .cpp of course class GameWidget : public QWidget { Q_OBJECT public: GameWidget(QWidget* parent = nullptr) : QWidget(parent) { generateMyListOfObjects(); } const QVector<Object>& objects() const { return objects_; } private: void generateMyListOfObjects() { //fill the objects vector here } QVector<Object> objects_; }; And how i can connect the slot of differents objects to built-in timer of QWidget ? You don't. As I said - reimplement the timerEvent method. It will be called every time the timer times out. You can call some methods directly in it or emit a custom signal if you'd like.

Hi, You can use the Animation Framework for that. But rather than painting on a widget since you seem to be writing a game, you should take a look at the GraphicsView Framework

My point is simply that blind adherence a principle or method can actually be worse than fully understanding the needs and goals of what you are trying to do. Amen.

Hi, Thank you both for your suggestions! As this project is intended for industrial purposes I think XML is a great solution. I followed some tutorials on how to use XML on Qt and managed to make it work (as well as understand) pretty well for what I intended to do. I'm leaving here the tutorials I followed in case someone stumbles upon this thread with the same problem: (I apologize if this is not allowed) https://www.youtube.com/watch?v=NXGE5XUrRSI https://www.youtube.com/watch?v=NzQwJdcdRKE I had to make some changes to my project but it's easy to understand. Thank you, once again!

@oleg.meleshko said: Ok, got it, thank you so much! You're welcome