How to disable a Checkbox with condition.

Question

Dear experts,
I am doing a module pool program. My questyion is, the program has a checkbox. After certain process, let's say if it met a IF condition. This checkbox needs to be disabled. No matter the checkbox previously is ticked or without tick. The checkbox need to be completely disabled.
Please advice how should I do it. As I have search in the forum for some time, but I could not get my answer.
Appreciate if someone can help. Thanks in advance.

Answer 1

Hi,
3 problems.
1. U r using lower case for check boxes screen name
2. Screen-invisible is used to make data of the parameter invisible while typing eg: PASS WORD.
3. What ever modification we are doing is over written in AT SELECTION SCREEN OUTPUT event.
use screen input attribute as i told earlier.
AT SELECTION SCREEN OUTPUT is analogous to PBO of
Dialog program
Check below modified code. It is working fine now.
SELECTION-SCREEN END OF BLOCK b1.
INITIALIZATION.
  tt = 'Example'.
  chk1 = 'X'.
AT SELECTION-SCREEN OUTPUT.
  IF radio1 EQ 'X'.
    LOOP AT SCREEN.
      CHECK screen-name = 'CHK2'.
      screen-input = 0.
      MODIFY SCREEN.
      EXIT.
    ENDLOOP.
  ELSE.
    LOOP AT SCREEN.
      CHECK screen-name = 'CHK1'.
      screen-input = 0.
      MODIFY SCREEN.
      EXIT.
    ENDLOOP.
  ENDIF.
AT SELECTION-SCREEN ON BLOCK b1.
  CASE sy-ucomm.
    WHEN 'R1'.
      IF radio1 = 'X'.
        CLEAR chk2.
        chk1 = 'X'.
      ELSEIF radio2 = 'X'.
        CLEAR chk1.
        chk2 = 'X'.
      ENDIF.
  ENDCASE.
I hope u r clear now.
Thanks,
Vinod.
Edited by: Vinod Reddy Vemuru on Jul 29, 2008 4:33 PM