Question

I want to get a signal to call a function with certain arguments, like the example below.

QPushButton *yes = new QPushButton("Yes");
yes->connect(yes, SIGNAL(clicked()), NULL, SLOT(printf("You pressed a button")));

How do I accomplish this?

Answer 1

It seems very inefficient but you could create a new signal with a QString argument, which you connect to your pushbutton. The text contained will be defined on your emit call.

eg.

connect(yes, SIGNAL(clicked()), this, SLOT(emitHelloWorldText());
connect(this, SIGNAL(emitText(QString)), receiver, SLOT(dostuffWithText(QString)));

then your emitHelloWorldText method can be something like

void emitHelloWorldText() {
    emit emitText("Hello world");
}

Then this can be picked up by your receiver class

void doStuffWithText(const QString &text) {