QPushButton and connect problem(((

[Zlatomir]

Yes, what i said remains valid, but in your particular case you don't pass anything - because the clicked signal has void parameters and if the slot (member function) has default arguments (void setTxt(QString txt = "hi!"); ) so it can be called with void parameter ( just setTxt() ) - and it will just use the default value.

So the connect statement will be:

QObject::connect(btn, SIGNAL(clicked()), btn, SLOT(setTxt())); //no QString here (it will use the default)

QObject::connect(btn, SIGNAL(clicked()), btn, SLOT(setTxt())); //no QString here (it will use the default)

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//Read the documentation for signal and slots (i gave you a link in my first post)

LE: Also the setTxt slot should not emit clicked signal (you end up with an infinite loop) so delete/comment the line: emit clicked(); from void mybtn::setTxt(QString txt) {...}