gv_print type slis_print_alv.

gv_print-print = 'X'.
 CALL FUNCTION 'SET_PRINT_PARAMETERS'
    EXPORTING
      destination = 'LOCL' " Printer
      layout      = 'X_65_512/2' "Format
      line_count  = '65' "Line Count
      line_size   = '1024'. "Line Size
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
 EXPORTING
   I_STRUCTURE_NAME                  = 'T000'
   IS_PRINT                          = v_print
  TABLES
    T_OUTTAB                          = gt_final
* EXCEPTIONS
*   PROGRAM_ERROR                     = 1
*   OTHERS                            = 2
          .