dynamic screen problems

[Former Member]

I have looked through some posts about screen, as my understanding, 1st, define a parameter with a user command, 2nd, in at selection-screen output, use loop screen to modify the screen, but how does it know which parameter it will trigger event for? if i define param1 with user command cmd1 and param2 with user command cmd2, how to control that? I found the "at selection-screen output" only trigger the param1, but if i also want to do it use param2, how to do that? i tried to use sy-comm = 'cmd1' to check, but there is no data in sy-comm, confused.

another question, can i use "at selection-screen on param1" to make the screen dynamic? seems not, only some form or function can be added there, but not changing the screen, right?

thanks for your help.

legend

[RichHeilman]

Usually the user commands tied to parameters are only used for checkboxes or radiobuttons, you can specific two different user commands for two parameters.

parameters: p_check1 as checkbox user-command ck1.
parameters: p_check2 as checkbox user-command ck2.

at selection-screen.

  case sy-ucomm.
    when 'CK1'.
      message w001(00) with  'You have check P_CHECK1'.

    when 'CK2'.
      message w001(00) with  'You have check P_CHECK2'.
  endcase.

Regards,

Rich Heilman

[RichHeilman]

You can make changes to the screen in the AT SELECTION-SCREEN OUTPUT event. Please see this example.

report zrich_0001.


parameters: p_check1 as checkbox user-command ck1.
parameters: p_check2 as checkbox user-command ck2.
parameters: p_field1 type c,
            p_field2 type c.

at selection-screen output.

  loop at screen.
    if ( screen-name = 'P_FIELD1'
       and p_check1 = space )
      or ( screen-name = 'P_FIELD2'
        and p_check2 = space ).
      screen-input = '0'.
    else.
      screen-input = '1'.
    endif.
    modify screen.
  endloop.




at selection-screen.

  case sy-ucomm.
    when 'CK1'.
*      message w001(00) with  'You have check P_CHECK1'.

    when 'CK2'.
*      message w001(00) with  'You have check P_CHECK2'.
  endcase.

Regards,

Rich Heilman

[Former Member]

thanks so much! i got the point.

[RichHeilman]

Please make sure to award points for all helpful answers and mark the post which has helped you solve your problem the best. Thanks.

Regards,

Rich Heilman

[Former Member]

Hi legend,

check these links:

http://www.sapgenie.com/abap/example_code.htm

http://www.sapgenie.com/abap/

reward if helpful.

regards,

keerthi.