Inheritance and signal

I've got problem with connecting any signal from my class (it inherits from qtreewidget). I've found similar problem in this thread:
http://www.qtcentre.org/forum/f-qt-p...ignal-338.html
but I still can't solve the problem. I always get message:

Code:

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Object::connect: No such signal Zespoly::itemClicked(QTreeWidgetItem*item,int)

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You must not put any parameter names but only types into connect() statement.

Code:

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connect(sender, SIGNAL(itemClicked(QTreeWidgetItem*, int)), receiver, SLOT(...));

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OMG:o
It was late when I had this problem - I was definitely too tired. Thanks;)