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Question from philip_jones2003 on Sep 15 at 5:24 PM A selection-screen with two input-disabled parameters. Entry is only possible via an 'AT SELECTION SCREEN ON VALUE REQUEST FOR {field}.
works perfectly except the OBLIGATORY addition to the parameter no longer functions. Well it is input-disabled after all.
So I put a test in 'AT SELECTION SCREEN' to check both for INITIAL on both fields. Issue a type 'E' message and control goes back to the selection screen.....great!
.....except the F4 help sets sy-ucomm to 'ENT' so that control goes to AT SELECTION SCREEN and tests the fields not yet touched and the program issues a message for the other ( still ) empty field.
Not a show-stopper but a little annoying.
SO : AT SELECTION-SCREEN ON {field}
Use F4 to populate the first field. Control goes to AT SELECTION SCREEN ON {field} and tests for a value....no problem, no message.
BUT control then goes to AT SELECTION SCREEN ON { the other field}....does the test and issues an error message before returning control to the screen.
I always understood that AT SELECTION SCREEN ON {field} was executed ONLY for the field in question.....not so unless DEBUG is lying. It seems that AT SELECTION SCREEN ON {field} is executed whenever sy-ucomm gets set to 'ENT' for ALL fields.
( The F4 value request sets it to ENT)
I dont want to see error messages for fields the user has not yet reached.
Any ideas anyone?
Part of the code :
************************************************
AT SELECTION-SCREEN ON p_delim. "BOTH OF THESE ARE XEQ
*************************************************
IF p_delim IS INITIAL.
MESSAGE 'Select an entry for Delimiter.' TYPE 'E'.
ENDIF.
************************************************
AT SELECTION-SCREEN ON p_fname.
************************************************
IF p_fname IS INITIAL.
MESSAGE 'Select an entry for File name.' TYPE 'E'.
ENDIF.
*************************************************
AT SELECTION-SCREEN.
*************************************************
my_ucomm = sscrfields-ucomm.
IF p_fname IS INITIAL.
MESSAGE 'Please select a value for File Name' TYPE 'E'.
endif.
IF p_delim IS INITIAL.
MESSAGE 'Please select a value for Delimiter' TYPE 'E'.
ENDIF.
*************************************************
AT SELECTION-SCREEN OUTPUT.
*************************************************
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