At Seletion Screen

Question

Hi,
What is the difference between at-selection screen and at-selection screen output ?
Vinay

Answer 1

hi
all r explain between at selection-screen and at selection-screen output
pls see the below example.
         Selection screen                                            *
SELECTION-SCREEN BEGIN OF BLOCK bl1 WITH FRAME  TITLE text-001.
If radio button is checked then upload file to DB.
PARAMETERS:rb_load RADIOBUTTON GROUP rb DEFAULT 'X' USER-COMMAND ucomm .
If radio button is checked then display the table details.
PARAMETERS:    rb_disp RADIOBUTTON GROUP rb .
SELECTION-SCREEN END OF BLOCK bl1.
SELECTION-SCREEN BEGIN OF BLOCK bl2 WITH FRAME  TITLE text-002 .
File to be uploaded (File Path)
PARAMETERS    : p_file LIKE ibipparms-path MODIF ID gr2 . "OBLIGATORY
SELECTION-SCREEN END OF BLOCK bl2.
SELECTION-SCREEN BEGIN OF BLOCK bl3 WITH FRAME  TITLE text-003.
SELECT-OPTIONS: s_matgp  FOR   zsamp_alter-zmatgp MODIF ID gr3,   "Customer code
                s_werks  FOR   zsamp_alter-werks MODIF ID gr3,    "Plant
                s_matnr1  FOR   zsamp_alter-zmatnr1 MODIF ID gr3,  "Material number
                s_matnr2  FOR   zsamp_alter-zmatnr2 MODIF ID gr3.  "BOM material number
SELECTION-SCREEN END OF BLOCK bl3.
        At Selection screen                                          *
AT SELECTION-SCREEN OUTPUT.
  IF NOT rb_load IS INITIAL.
    LOOP AT SCREEN.
      IF screen-group1 = 'GR3'.
        screen-invisible = 1.
        screen-input = 0.
        MODIFY SCREEN.
      ENDIF.
    ENDLOOP.
  ELSE.
    LOOP AT SCREEN.
      IF screen-group1 = 'GR2'.
        screen-invisible = 1.
        screen-input = 0.
        MODIFY SCREEN.
      ENDIF.
    ENDLOOP.
  ENDIF.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_file.
Select the file to upload
  CALL FUNCTION 'F4_FILENAME'
    EXPORTING
      program_name  = syst-cprog
      dynpro_number = syst-dynnr
    IMPORTING
      file_name     = p_file.
thanks
kumar kk