QPushButton Double Click?

[GeneCode]

I want to be able to double click a QPushbutton instead of a single click.

What I tried:

connect(pb, SIGNAL(doubleClicked()), this, SLOT(comBtnPressed()));

connect(pb, SIGNAL(doubleClicked()), this, SLOT(comBtnPressed()));

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Error says "QObject::connect: No such signal QPushButton::doubleClicked()"

I chose QPushButton initially, but for my purpose, you can suggest change to other object if it can make a doubleclick event. Not necessarily be a push button.

Thank you Masters of Qt and C++.