DropDownList event issue

[Former Member]

hi,

i want to change some input fields to uneditable when i select a value from a dropdownlist, how can i do it?

i know use AT SELECTION-SCREEN OUTPUT can change screen elements attributes,but this is triggered after you press 'enter'. when a list value selected, this event doesn't triggered.experts, would you show me what events triggered after a list valued selected? hunger for your advices, thanks!!!

[Former Member]

declare the list box with user command

parameters : p_matnr like mara-matnr as listbox visible length 18 <b>user-command ucom.</b>

now when you will select any value from list it will trigger at selection-screen and at selection-screen output respectively.

regards

shiba dutta

[Former Member]

hi,thanks for your advice,but i try your code and get compile error

my code is below:

PARAMETERS: SELXMZT like zfi_budget-pbukr AS LISTBOX visible length 18 user-command ucom.

AT SELECTION-SCREEN ON VALUE-REQUEST FOR SELXMZT.

PERFORM XXX.

AT SELECTION-SCREEN OUTPUT .

XXX...

and get the compile error:

The addition "ON VALUE-REQUEST FOR" is not allowed with parameters or select-options if matchcode object is present.

i need the "on value-request for",how can i solve the problem?

[Former Member]

may i know what are you doing in

AT SELECTION-SCREEN ON VALUE-REQUEST FOR SELXMZT.

PERFORM XXX.

if you are trying to fill the data in list box you can fill it in INITIALIZATION or

AT SELECTION-SCREEN OUTPUT event also. So you can avoid at selection-screen on value-request event.

If you can pls paste the full code also.

regards

shiba dutta