[SOLVED] Slot without Q_OBJECT

[qtacc32]

Hello,

I'd like to have a template class but unfortunately, it doesn't work with Q_OBJECT.
So I read about Q_INVOKABLE which would work I guess but be quite inconvenient.
I could connect signals to lambdas though and call the invokable methods from there.

My question: Why does Qt allow connecting to lambdas but not to non-QObject classes (which lambdas are too, not?)?

Thanks!

// EDIT:

I just realized that this works:

template<class T>
class Test2 : public QObject
{
	T t = 3;
public:
	void SltX()
	{
		std::cout << "Test2::SltX: " << t << std::endl;
	}
};

QObject::connect(&mainWindow, &MainWindow::SigTest, &t2, &Test2<int>::SltX);

I guess I can live with the downsides of not having Q_OBJECT (is there a complete list with all of them?).

// EDIT2:

Ou, cannot have signals :-/
Damn, will templates ever be supported? So important ...

[SGaist]

Hi,

Here you can find the reason about why there's that limitation with templates

[JKSH]

Qt developers have investigated this before, and there is a partially-working patch.

There are still a number of important challenges to work through, but devs are focussing on other things at the moment. It is not currently being actively worked on: http://comments.gmane.org/gmane.comp.lib.qt.devel/10327