Field that dosen't permit Copy&paste.

Question

Hi everybody,
     I need to create an input field in a screen that doesn’t and won’t permit coping from it. In other words an input field that is visible but not selectable. Another way to solve my need would be to restrict the paste of this field.
I’ve thought of creating an image from it and posting it but it’s too complicated and would consume a lot of resources. If anybody has a better idea or knows how to do this please answer.
Thanks a lot.

Answer 1

Hi Jorge,
To have a field that does not allow copying from it is difficult to handle. In fact almost impossible, if there is NO other activity on the screen.
You would have to write your own event handler in ABAP objects and build a trigger mechanism that listens to the activation or déactivation of a field.
However, in order to give you some help, there is a way to cleanup the CLIPBOARD (so any entries in it are removed, thus preventing a CTRL+V (paste) operation.
Simply place this in the first PAI module of your screen:
DATA: myrc TYPE i.
CALL METHOD cl_gui_frontend_services=>clipboard_export
  CHANGING
    rc = myrc
  EXCEPTIONS
    CNTL_ERROR   = 1
    ERROR_NO_GUI = 2
    others       = 3.
Of course you need to handle possible errors (clean up SY-SUBRC). Also keep in mind, that this does NOT prevent COPY & PASTE operation, as long as the screen has NOT passed the PAI event in your program.
Hope this gives you a clue,
Regards,
Rob.