更改 Select-Options 值时是否有事件

Question

Is there an EVENT that triggers when a value is changed in a SELECT-OPTIONS ? But directly when it's changed, without having to press Enter , as soon as the user enters a value and clicks somewhere else in the screen, or when a user chooses a value from the F4 value menu.

I've try many event, like:

AT SELECTION-SCREEN on s_carrid.
  "This trigger only when user hit "enter"

AT SELECTION-SCREEN on VALUE-REQUEST FOR s_carrid-LOW.
  "This trigger when user press F4, but nothing after selecting a value...

Thanks for your help

DATA: v_carrid type s_carr_id.
SELECT-OPTIONS s_carrid for v_carrid no INTERVALS MODIF ID br5.

Answer 1

There's no event triggered when a value is changed in a SELECT-OPTIONS element. Events are raised only when a function code, a menu or a button is pressed, or eventually a radio button or a checkbox.

There's no event triggered when a value is returned from the value help ( F4 function key on the input field), the input field is directly filled with the selected value.

Instead, you may define some ABAP code when F4 or the value help button is pressed, display the search help, get the selected value and do whatever you want, like filling the input field with the value, and any other process.