@takti You need to understand that most people in this forum are volunteers spending their own time to help others for free. This includes me as well. Since I don't have a solution for your problem I suggested to check somewhere else also.

@jsulm When the pop up Message Box shows "python has stopped working", I clicked "debug" rather than close, then visual studio was started, in visual studio,
it shows
Unhandled exception at 0x0000000059A17DF1 (QtGui4.dll) in python.exe: 0xC000041D: An unhandled exception was encountered during a user
callback

I was using pycharm to trace code step by step, however it nev, aer run to this issue by step by step since there are two many small steps/callback/signal/slot to go through, as long as I let it run without breakpoint, it will crash with segmentation fault.

@Poulad Problem solved. I installed a newer version from debian unstable sid repository and the problem is solved :)

If you want to use the solaris compiler with Qt you probably have to first recompile Qt yourself. Anyway, switching to g++ is not a bad idea in this case.

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();?

From the docs for QMap::operator

If the map contains no item with key "key", the function inserts a default-constructed value into the map with key key, and returns a reference to it.

A default constructed MyObject* will not point at a valid MyObject and attempting to use that pointer with fail.

Thanks, kuzulis!
You are right.
I updated driver of my Nvidia card (however manually).
Problem has been fixed!

You're welcome !

Since you have it working now, please update the thread title prepending [solved] so other forums users may know a solution has been found :)

That was my point. Your sample program that was posted won't compile so it is not possible to see the problem with your compiled version (it must be different).

You can only manipulate the instance of a class/structure/object. You cannot call any (non-static) members of QLabel directly.

I would be surprised if this example doesn't work:

#include<QLabel> int main(int argc,char* argv[]) { QApplication app(argc,argv); QLabel *label=new QLabel; label->setText("Hello world"); label->show(); return app.exec(); }