Enable disable screen elements..

Question

hi,
at runtime, say for e.g. i want to enable or disable screen elements, like text boxes. also i want to check/uncheck the checkbox..what r the statements ?
where do i get the list of properties of the screen elements that i can set/reset ?
thks

Answer 1

hii
here p_docno is individual screen element in above thread  there you need to give your screen element name and there is a condition like
if p_rad1 is not initial..at this place use your codition like in below code for create and for modify radiobutton is there and see the code..like this you can use while you press button for CREATE and MODIFY.
just you need to use button at that place like
when 'CREATE'..or when 'MODIFY'.
SELECTION-SCREEN BEGIN OF LINE.
PARAMETERS p_rad1 TYPE c RADIOBUTTON GROUP gr  DEFAULT 'X'
USER-COMMAND
usr .
SELECTION-SCREEN COMMENT 3(16) text-005.
SELECTION-SCREEN END OF LINE.
SELECTION-SCREEN BEGIN OF LINE.
PARAMETERS p_rad2 TYPE c RADIOBUTTON GROUP gr.
SELECTION-SCREEN COMMENT 3(16) text-006.
SELECTION-SCREEN END OF LINE.
PARAMETERS:
  p_num1 TYPE i MODIF ID num,
  p_num2 TYPE i MODIF ID num,
  p_char1 TYPE c MODIF ID chr,
  p_char2 TYPE c MODIF ID chr.
AT SELECTION-SCREEN output..
if p_rad1 is not initial.
    LOOP AT SCREEN.
       IF screen-group1 = 'NUM'.
        screen-input = 0.
        MODIFY SCREEN.
      ENDIF.                           " IF screen-name CS 'p_docno'.
      IF screen-group1 = 'CHR'.
        screen-input = 1.
        MODIFY SCREEN.
      ENDIF.                           " IF screen-name CS 'p_docno'.
    ENDLOOP.                           " LOOP AT SCREEN.
  ELSE.
    LOOP AT SCREEN .
       IF screen-group1 = 'NUM'.
        screen-input = 1.
        MODIFY SCREEN.
      ENDIF.                           " IF screen-name CS 'p_docno'.
      IF screen-group1 = 'CHR'.
        screen-input = 0.
        MODIFY SCREEN.
      ENDIF.                           " IF screen-name CS 'p_docno'.
    ENDLOOP.                           " LOOP AT SCREEN .
  ENDIF.                               " IF p_rad2 IS INITIAL .
i hope it helps you.
regards
twinkal