In Qt, signals and slots require matching argument types: QObject::connect: Incompatible sender/receiver arguments QLabel::linkActivated(QString)

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Editorial Team

Asked: May 26, 20262026-05-26T14:05:54+00:00 2026-05-26T14:05:54+00:00

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?

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Editorial Team · Answer 1 · 2026-05-26T14:05:55+00:00

Editorial Team

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.

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