[SOLVED]I need explanation about connect()

unixmania

Signal and slot mechanism is heart of qt.So i want to learn it thoroughly.There are somethings that preoccupies me. QObject::Connect() has five different form.One of them takes 3 arguments.Qt documentation(5.1.0) says about it that
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QMetaObject::Connection QObject::connect(const QObject * sender, const char * signal, const char * method, Qt::ConnectionType type = Qt::AutoConnection) const
This function overloads connect().

Connects signal from the sender object to this object's method.

Equivalent to connect(sender, signal, this, method, type).

Every connection you make emits a signal, so duplicate connections emit two signals. You can break a connection using disconnect().

Note: This function is thread-safe.

See also disconnect().
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About "Equivalent to connect(sender, signal, this, method, type)." above:
1-Does class which pointing by *this have to be a subclass of QObject?
2-Does method had to be declared as custom slot?(in case of it is not member any QObject subclass)
3-Do I have to use SLOT macro such SLOT ( method ( args ) ) ?
4-Do I have to use Q_OBJECT macro in header?

All questions above about qt5. Thanks.

SGaist

Hi

No, you can declare slots as public, protected or private.
Using this form of connect, yes
Yes you have to

You can read more about it in this "chapter":http://qt-project.org/doc/qt-5.0/qtcore/signalsandslots.html

unixmania

Thank you again.Answers are
1-Yes
2-Yes
3-Yes
4-Yes