using cut(), copy(), paste()

[systemz89]

Hello. I have a program which have Edit menu, where I have cut, copy and paste.
I tried to use these menus with the following:

...
 connect(action_Copy,SIGNAL(triggered()),lineEdit_2,SLOT(copy()));
 connect(action_Copy,SIGNAL(triggered()),lineEdit_3,SLOT(copy()));
...

...
 connect(action_Copy,SIGNAL(triggered()),lineEdit_2,SLOT(copy()));
 connect(action_Copy,SIGNAL(triggered()),lineEdit_3,SLOT(copy()));
...

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Now the copy menu works, but there is over one million connect there... How can I optimise this situation? I thinked about for cycle but I search other, better solution... Please help, thanks