Accept only special characters in Selection Screen parameter

Question

I have one input field of type C.

PARAMETERS lv_sep TYPE c.

Field lv_sep should accept only special characters.

Can you help me how i can give this constraint?

In order to distinguish parameters from data values, one usually names parameters as p_* , so in this case it ought to be p_sep. Furthermore not mentioning length, because the default is one and not using a custom type is very old skool, and ought to be avoided. — tomdemuyt, Feb 04 '13 at 01:23

score 7 · Accepted Answer · answered Feb 01 '13 at 07:31

7

you can do checks during AT-SELECTION-SCREEN. You could for instance check the parameter lv_sep for the characters you want to accept.

AT-SELECTION-SCREEN.
if not lv_sep CO '!"§$%&/()=?'.
    message text-e01 type E.
endif.

answered Feb 01 '13 at 07:31

Dirk Trilsbeek

score 2 · Answer 2 · answered Feb 04 '13 at 01:27

2

Because I like to avoid NOT in IF statements when I can, I would propose this:

AT-SELECTION-SCREEN.
IF lv_sep CN '!"§$%&/()=?'.
  MESSAGE text-e01 TYPE E.
ENDIF.

answered Feb 04 '13 at 01:27

tomdemuyt

2 Answers2