What the heck is this C++ syntax called? [duplicate]

Question

Possible Duplicate:
What is this weird colon-member syntax in the constructor?

I see it everywhere in constructors in Qt applications, but I don't know what it's called. I'm trying to find docs about it.

Browser::Browser(QTextBrowser& textBrowser, QObject* parent /*= 0*/)
: // <- What
m_textBrowser(textBrowser), // <- is
QObject(parent) // <- this stuff?
{
}

I apologize for my newbness.

Answer 1

Constructor Initialization list

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Answer 2

It's a constructor initialization list

Answer 3

It is a constructor initialization list. In your example, it looks like it's being used to initialize a data member and a base class.