check box and signal

[mickey]

Hi, I'm trying to do this:

connect( checkBox, SIGNAL(toggled(bool)), this, SLOT (activeOption() )); 
connect( checkBox2, SIGNAL(toggled(bool)), this, SLOT (activeOption() ));

connect( checkBox, SIGNAL(toggled(bool)), this, SLOT (activeOption() )); 
connect( checkBox2, SIGNAL(toggled(bool)), this, SLOT (activeOption() ));

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problem is that check box belog to button group exclusive of 2 check box; When I active check1 start my SLOT and SLOT starts a second time because when checking the fisrt box, I de-checking the second too (is exclusive); I need something like:
connect( checkBox2, SIGNAL(checked()).....but it is not a signal?
is there a signal?
Thanks