abap

[Former Member]

how to change the parameter field to be unchangable..... for example if we are have some values in the parameter it should not be changed in the output screen........... ???????

[Former Member · Accepted solution]

i think it is not possiable .

PARAMETERS <p>[(<length>)] [TYPE <type>|LIKE <obj>] [DECIMALS <d>]

[DEFAULT <f>]

[MEMORY ID <pid>]

[LOWER CASE]

[OBLIGATORY]

[VALUE CHECK]

[AS CHECKBOX]

[RADIOBUTTON GROUP <radi>]

[NO-DISPLAY]

[MODIF ID <key>].

Declares a variable <p>, as in the DATA statement. For <p>, an input field appears on the corresponding selection screen. The additions allow you to define default values, accept lowercase input, define the field as required, check values, define a checkbox or radio button, prevent the field from being displayed on the selection screen, or modify the field

else supports try.

at selection screen

loop at screen..

parameter

invisable = 'x'

endloop.

[Former Member]

Hi,

I think you need to post your questions in one of the ABAP forums - you will get far more responses there (I stumbled over this one).

To achieve what you want, you can use the "at selection-screen output" event and "loop at screen" logic to prevent data being entered into the screen - see the example below.

cheers

Jonathan

report zlocal_jc_lock_field.                                                                                
parameters:                                                    
  p_fielda              like sy-datum default sy-datum,        
  p_fieldb              like sy-datum default sy-datum.        
                                                               
at selection-screen output. "just before screen is displayed   
  perform at_selection_screen_output.                                                                                
form at_selection_screen_output.                                                                                
loop at screen.                                              
    if screen-name cs 'P_FIELDB'.                              
      screen-input = '0'.                                      
      modify screen.                                           
    endif.                                                     
  endloop.                                                                                
endform.