How to register custom pointer so that signal/slot can use it?

[Mr Pang]

I want to pass 2 custom pointers using signal/slot.
My signal is defined as

void createTimerRequest(const timer::CreateTimerRequest* request, std::promise<timer::CreateTimerReply_Status> *promise);

I try to use

qRegisterMetaType<std::promise<timer::CreateTimerReply_Status>*>("std::promise<timer::CreateTimerReply_Status>*");
qRegisterMetaType<timer::CreateTimerRequest*>("timer::CreateTimerRequest*");

But it doesnot work. The slot function is no called.
Any ideas??

Thank you.

[sierdzio]

You have to also declare these types using Q_DECLARE_METATYPE. When calling connect check if the return value is true. If not, look for warnings printed to terminal. If there are warnings, post them here.

[Mr Pang]

Oh, my fault. My eventloop is dead lock. No need to register pointer, in fact.