Is it possible to know if the user click on print button in Crystal Reports preview window ???

I have to know this because if the user print his formular, my application have to save the reference number to a database...I have to save this number only if a formular is printed...

I cant send it directly to printer because we use NCR Paper (Carbonless paper) and this kind of paper is very expansive...

I hope to have been clear with my explanations...

Thanks in advance !

Have a nice week-end everybody !