Disabling a field when a radiobutton is selected.

Question

Hi,
I have two radio buttons R1  and R2  and three input fields date1,date2 and date3 of which date3 is mandatory. My requirement is when I click on R2 the field date1 needs to be disabled. I am coding the logic at selection-screen output. But since the field date3 is mandatory this logic is calling after the madatory field check only. I want it to call before the mandatory field check.
Any solution?.
Thanks & Regards,
Soumya.

Answer 1

look at this code it may help u
SELECT OPTIONS
SELECTION-SCREEN BEGIN OF BLOCK b2 WITH FRAME TITLE text-002.
PARAMETERS: r1 RADIOBUTTON GROUP rad1 MODIF ID sc7 USER-COMMAND cli DEFAULT 'X',
            r2 RADIOBUTTON GROUP rad1 MODIF ID sc6.
SELECTION-SCREEN END OF BLOCK b2.
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE text-001.
SELECT-OPTIONS: s_ponum  FOR ekpo-ebeln MODIF ID sc1,   "PURCHASING DOCUMENT NUMBER
                s_prodno FOR afko-aufnr MODIF ID sc2.   "ORDER NUMBER
PARAMETERS
PARAMETERS:     p_chno(8) TYPE c MODIF ID sc4.          "Challan no
SELECT OPTIONS
SELECT-OPTIONS: s_date FOR sy-datum MODIF ID sc5
                              NO INTERVALS NO-EXTENSION.    "Date
SELECTION-SCREEN END OF BLOCK b1.
AT SELECTIONSCREEN OUTPUT
At selection screen if user selects PO then the Prod order will
become dispaly only and if user selects prod order then
the PO field and the challan.no becomes display only.
In both cases the date will be mandatory field.
AT SELECTION-SCREEN OUTPUT.
  IF r2 = 'X'.
   IF NOT s_prodno IS INITIAL.
    LOOP AT SCREEN.
      IF screen-group1 = 'SC1' OR screen-group1 = 'SC4' ."OR screen-group1 = 'SC5'.
        screen-input = '0'.
        MODIFY SCREEN.
      ENDIF.
    ENDLOOP.
  ENDIF.
  IF r1 = 'X'.
   IF NOT s_ponum IS INITIAL.
    LOOP AT SCREEN.
      IF screen-group1 = 'SC2'.
        screen-input = '0'.
        MODIFY SCREEN.
      ELSEIF screen-group1 = 'SC4' OR screen-group1 = 'SC5'.
         screen-required = '1'.
        MODIFY SCREEN.
      ENDIF.
    ENDLOOP.
  ENDIF.
reward if useful.
Regards
Dheeraj