Field Name of the field on the Selectiion Screen

Question

Hi,
I am executing report program and we get a Selection Screen .The question is  can we catch the field names of the fields on the selection screen dynamically.
We can find the field name by pressing F1 and looking into the Technical Information of that perticular field.
But can we fetch the field name dynamically.
Any pointers/information in this regard will be highly helpful.
Thanks & regards,
Abhijeet

Answer 1

Hello Abhijeet,
Here's what I think you're looking for -
tables spfli.
parameters     : p_test   like spfli-carrid.
select-options : s_carrid for  spfli-connid.
DATA:
  descr_ref TYPE ref to cl_abap_elemdescr.
START-OF-SELECTION.
  descr_ref ?= cl_abap_typedescr=>describe_by_data( p_test ).
  WRITE: / 'Typename     :', descr_ref->absolute_name.
  WRITE: / 'Kind         :', descr_ref->type_kind.
  WRITE: / 'Length       :', descr_ref->length.
  WRITE: / 'Decimals     :', descr_ref->decimals.
  WRITE: / 'Output Length:', descr_ref->output_length.
  WRITE: / 'Help ID      :', descr_ref->help_id.
Kind------> data type (C , I , etc.,)
Help ID---> data element (usually).
There are other classes in ABAP of the form CLABAPDESCR which can provide you with other information. These classes all belong to what is called RTTI (Run Time Type Identification). However, these are available only from 46c. You can explore the other classes, as I think they would be very interesting and useful in the future.
Regards,
Anand Mandalika.