Cannot queue...

[vratojr]

Hello,I'm writing a multithread application.
I have an object that I have to pass in a slot between two threads.
I have registered the object:

qRegisterMetaType<ExchangeAction>("ExchangeAction");

qRegisterMetaType<ExchangeAction>("ExchangeAction");

To copy to clipboard, switch view to plain text mode 

And I'd like to pass the object as a reference (ExchangeAction&) but I got the error that is not possible to queue it. Why?

thanks!

[wysota]

What does ExchangeAction look like? You probably need to provide methods to serialise and deserialise it to be able to queue it.

EDIT:

Any class or struct that has a public constructor, a public copy constructor, and a public destructor can be registered.

Does ExchangeAction have all those?

You could also take a look at void qRegisterMetaTypeStreamOperators ( const char * typeName ).

[vratojr]

What does ExchangeAction look like? You probably need to provide methods to serialise and deserialise it to be able to queue it.

EDIT:

Any class or struct that has a public constructor, a public copy constructor, and a public destructor can be registered.

Does ExchangeAction have all those?

Hi,thank for your reply.
The class is a very simple class and it has what is needed. In fact I CAN register it.
I can pass a ExchangeAction in a slot but not an ExchangeAction&.

You could also take a look at void qRegisterMetaTypeStreamOperators ( const char * typeName ).

Thanks but I don't need it.

[jacek]

I can pass a ExchangeAction in a slot but not an ExchangeAction&

I don't think it's possible to queue a reference. If you need to modify that object in a slot, try sending a pointer.