problem in sender()

[wagmare]

hi friends,

i got a small problem ..

i have a graphicsItem :- backButton (text: f7) and
a graphicsItem :- forwardButton(text f6)

so if the user clicks on backButton i am emitting a signal

connect(backitem6, SIGNAL(closeSignal()), this, SLOT(goMainPage()));
 
/*and slot*/
if(sender() == backitem){
                /** operation for backitem**/
        }else if(sender() == forwarditem){
               /** operation for forward item **/
        }

connect(backitem6, SIGNAL(closeSignal()), this, SLOT(goMainPage()));

/*and slot*/
if(sender() == backitem){
                /** operation for backitem**/
        }else if(sender() == forwarditem){
               /** operation for forward item **/
        }

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this works fine ...

now i try shortcuts f6 and f7 .. so i override keyevents on graphicsview()

now how can i integrate the keypress with that signal closeSignal()

means both clicking and pressing f7 i have to call goMainPage() ..
and sender() also i have to manage ..

please give me any suggestion to handle this situation ..