Question

I am currently trying to complete a project using Qt4 and C++. I am using buttons to switch between states. While trying to connect the buttons’ clicked() signals to the textEdit to display the relevant state, I got stuck on an error:

Object::connect No such slot
QTextEdit::append(“move state”)
Object::connect No such slot
QTextEdit::append(“link state”)

Only, QTextEdit definitely has an append(QString) slot.

Any ideas?

Some code samples:

QPushButton *move = new QPushButton("Move");
connect(move, SIGNAL(clicked()), textEdit, SLOT(append("move state")));

Answer 1

You can’t pass in an argument (literally) to the append() slot when making a signal to slot connection.

You refer to it like a method signature:

SLOT(append(QString)) //or const QString, I'm not sure

If you need the textbox to append the words “move state” every time that button is clicked, then you should define your own slot that will do the append.