Print Functionality in ALV container

Hi

I have a ALV custom container  and I have Print Button in the standard ALV screen . I need to add a Function code /Ok code to the print button .

As function codes are not allowed  to standard alv screens( as I checked in the forums ) . I have created a new button as "print " and Now I need to implement the same print functionality to this custom Print Button.

Can we assign function codes to the ALV buttons?

Please suggest a better way of doing this.