How we can connect the signals and slot with different arguments?

Question

In Qt, signals and slots require matching argument types:

QObject::connect: Incompatible sender/receiver arguments QLabel::linkActivated(QString) --> Button::call(int)

How can I implement a combination like this?

Answer 1

A simple method is to have an intermediate slot that calls the slot that you want. e.g.

connect(src, SIGNAL(linkActivated(QString)), this, SLOT(receiveLink(QString)));

and then

void receiveLink(QString blah)
{
  int response = someFunction(blah);
  mybutton->call(response);
}

You have to define some way to interpret the string into an int.