How to connect QToolButtons in QButtonGroup with the QRadioButtons?

Question

I would like to connect QToolButtons in the QButtonGroup with QRadioButtons so that they perform same operations.

Here is the code:

QToolButton *A=new QToolButton();
A->setCheckable(true);
QButtonGroup *group = new QButtonGroup();

group->addButton(A);
group->addButton(B);

CLASSB *classB=new CLASSB(); 
connect(A, SIGNAL(clicked(bool)),classB->radioA , SLOT(toggle()));
connect(B, SIGNAL(clicked(bool)), classB->radioB, SLOT(toggle()));

A <->A1 // clicking on tool button should automatically enable radiobutton and should perform the action in radio button
B<->B1

I tried connect(A,SIGNAL(clicked(bool)),A1,SLOT(setChecked(bool))); but it didn't work.

Answer 1

If your QToolButton is not checkable it will only pass false as signal argument.

From QAbstractButton documentation:

This signal is emitted when the button is activated (i.e. pressed down then released while the mouse cursor is inside the button), when the shortcut key is typed, or when click() or animateClick() is called. Notably, this signal is not emitted if you call setDown(), setChecked() or toggle().

If the button is checkable, checked is true if the button is checked, or false if the button is unchecked.

Solution connect to toggle slot:

connect(A, SIGNAL(clicked(bool)), A1, SLOT(toggle()));