Thread shall emit signals with "complex" argument

[chris_helloworld]

Yes you can - http://doc.qt.nokia.com/4.6/threads-...across-threads

[numbat]

Docs say:

To use the type T in queued signal and slot connections, qRegisterMetaType<T>() must be called before the first connection is established.

Note that connections across threads are queued by default.

[Boron]

Thanks a lot. numbats' post helped.

Declaring a new metatype right after the class definition in the header file:

Q_DECLARE_METATYPE(MyTableWidgetRow)

Q_DECLARE_METATYPE(MyTableWidgetRow)

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and a

qRegisterMetaType<MyTableWidgetRow>();

qRegisterMetaType<MyTableWidgetRow>();

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right before the first usage in a connection did it.

[borisbn]

For the future: look in "output" window of your debugger, when you run your application. In your case it had a string:
"use qRegisterMetaType to send "MyTableWidgetRow" in signals/slots"
or something like this