How to Populate a Dropdown field for a table control with different keys

Question

Hi All,
I have Table control with abt eight columns (fields). Out of these eight field one field is with dropdown list. In table control Project ID is Primary key column. Depending upon this Project ID value, i have different values which is to be populated in dropdown boxes. In table control if there is only one project ID value say 'P000715' i can populate it but when i have more than one project ID (P000715, p000716, P000717.....) in display in rows of table control i want to have different values in my dropdown field corresponding to that row of project id. Experts please tell me how to achieve this functionality.
Thankx in Advance
Rizwan Ahmad Siddiqui

Answer 1

The only way you may be able to do this is using
MODULE PROCESS ON VALUE-REQUEST. User-programmer F4 help
in your PAI routine.
In this routine you would build the list and get the returned value to update the field.
Something like this.
  DATA: BEGIN OF value_tab OCCURS 0,
    field1 TYPE zlmltype,
    field2 TYPE zltypex,
  END OF value_tab.
* Drop down values
  REFRESH it_return_tab. CLEAR it_return_tab.
  REFRESH value_tab. CLEAR value_tab.
  SELECT ltype ltypex
    INTO TABLE value_tab
    FROM zlmltyp
    WHERE auth NE '9'.    "System Only
  CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
       EXPORTING
            retfield   = 'FIELD1'
            value_org  = 'S'
       TABLES
            value_tab  = value_tab[]
            return_tab = it_return_tab.
  READ TABLE it_return_tab INDEX 1 INTO wa_return_tab.
  CHECK sy-subrc EQ 0.
  p_pleadtyp = wa_return_tab-fieldval.