F4 Help for Presentation Server Folder Name .

Question

Hi Experts,
I want show the F4 help on the presentation server.
If the file is selected REquirement is that , on clicking the F4, the dialog box should open.
If we choose the file , then file should be selected , but if we select the folder then folder should be selected.
Normal function modules or methods present in SAP opens the folder containt  in the folder.
Kindly provide anyFM name or class method name o achieve the functiknality .
Thanks in advance.

Answer 1

HI,
Please paste this code,You will get F4 help.
   DATA:  lt_filetable  TYPE filetable,
           lwa_filetable TYPE file_table,
           l_rc          TYPE i.
  REFRESH lt_filetable[].
  CLEAR:lwa_filetable.
* Open file
  CALL METHOD cl_gui_frontend_services=>file_open_dialog
    CHANGING
      file_table              = lt_filetable
      rc                      = l_rc
    EXCEPTIONS
      file_open_dialog_failed = 1
      cntl_error              = 2
      error_no_gui            = 3
      not_supported_by_gui    = 4
      OTHERS                  = 5.
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
               WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ELSE.
    READ TABLE lt_filetable INTO lwa_filetable INDEX 1.
    IF sy-subrc = 0.
      p_sap1 = lwa_filetable-filename.
    ENDIF.
  ENDIF.