QGroupBox and signal clicked(bool)

I have a GUI done with designer (qt4)

it has a groupbox: theGroup
it has some radiobuttons: radio0, radio1, radio2;
it has a listwidget: monitor

then i've created a class MyClass which is derived from the gui.

I try to create a connection:

Code:

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void theGroup::on_theGroup_clecked(bool )   
{
   qDebug("done.");
}

---

the result is that there is no msg on the console.
Then i tried to connect the radiobutton signal with a slot i've created and it works fine. I am lost.

QGroupBox emits clicked() signal in case it's a checkable group box and the check state of the group box changes. QGroupBox::clicked() is NOT emitted when an arbitrary checkbox/radiobutton/anything else inside the group box changes its check state.

Find the bug!

I haven't understand the documentation well.

This signal works when the check box is activated.
The question now is: is there a way to have just one connection for all radiobuttons signal clicked in the qgroupbox or i have to make a connection for each radiobutton siglan?

See QButtonGroup.

it is working! one way...

Code:

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QGroupButton *myGroup;

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in the constructor I've make a connection

Code:

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connect(myGroup, SIGNAL(buttonClicked(QAbstractButton*)), this, SLOT(mySlot()));

---

and it works fine
i tried the qt4 way:

Code:

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void on_myGroup_buttonClicked( QAbstractButton * button );

---

and i get this error at runtime:

Quote:

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QMetaObject::connectSlotsByName: No matching signal for on_myGroup_buttonClicked(QAbstractButton*)

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QMetaObject matches QObject names --- it cannot see variables. Use QObject::setName().

i've done it. the function is QObject::setObjectName().

the next problem is that I've set the name in the constructor but the signal - slot connection it has been already done at this point.

So i think that I should create a new class which is derived from QButtonGroup and has a constructor with a chance to set a name.
or is there a better solution?

Quote:

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Originally Posted by codebehind

the next problem is that I've set the name in the constructor but the signal - slot connection it has been already done at this point.

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QMetaObject::connectSlotsByName() is called by setupUi(), so you have to create your button group earlier.

Quote:

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Originally Posted by codebehind

or is there a better solution?

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Just initialize it before invoking setupUi() or make the connection using QObject::connect().

it works.
a little detail - if you make ui with the designer, then you shoul put setupUi() befor any calling of other objects
for example:
I've add some radiobuttons (created with the designer) to the QButtonGroup. If i add those radio buttons to the buttongroup befor calling setupUi() the result is Segmentation Fault.

Quote:

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Originally Posted by codebehind

If i add those radio buttons to the buttongroup befor calling setupUi() the result is Segmentation Fault.

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That's because setupUi() creates all of the widgets from the .ui file. Before you invoke it you just have uninitialized pointers.