function module

[Former Member]

Hi all,

I m totally nem to fm.

i m reading a already developed code, having use of function module. Plz tell me in this code how we pass th parametr(criteria)like g_repid.....'x'.Plz explain line by line

call function 'REUSE_ALV_LIST_DISPLAY'

exporting

i_callback_program = g_repid

i_callback_user_command = g_user_command

it_fieldcat = fieldcat[]

it_events = per_event

i_bypassing_buffer = 'X'

i_save = 'A'

tables

t_outtab = it_pursumry

exceptions

program_error = 1

others = 2.

if sy-subrc <> 0.

message id sy-msgid type sy-msgty number sy-msgno

with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

endif.

endform. " DISPLAY_ALV

Definitely Rewards pts

Regards,

Savita

[Former Member]

hi,

i_callback_program = g_repid

means we are telling that the program from where the ALv is called is the program name which is stored in g_repid.......

u can populate value in this by g_repid = sy-repid.....

i_callback_user_command = g_user_command

if at click of any button on the ALV grid u want any user defined action to happen then and can be defined in this usercommand.....

it_fieldcat = fieldcat[]

if has the format of ur ALV...... like if u want color in ur ALV display ..... or any input enabled field ....... headings.....etc...

reward points if useful.......:-)

and mark the post answred once ur problem is solved ....

[Former Member]

Hi Ajantha,

Plz explain me this line

message id sy-msgid type sy-msgty number sy-msgno

with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

Best Regards,

Savita

[Former Member]

this is the system message ..when an error message occured it will shown automatically

[Former Member]

hi,

while calling ALV if any error occurs then this this Sy fields will conatin the information which will be displayed on the screen

sy-msgid - msg id

sy-msgty - error / information/ warning

sy-msgno - msg number

sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4--- this will have some text more decriptive

[raja_narayanan2]

REUSE_ALV_LIST_DISPLAY is a function module used to display reports in ALV format. In which we can pass the values in exporting parameters and get the result in importing parameters.

1) i_callback_program --> you can pass your current program name or any ABAP progam.

2) i_callback_user_command --> you can pass user command like sy-ucomm. what you click it perfoms.

3) it_fieldcat --> you have to pass the field catlog structure..

4) it_events -> here you can pass SLIS_T_EVENT- that Table of events to perform.

5) i_bypassing_buffer --> to skip all buffers

6) i_save----> Variants can be saved

7) t_outtab ---> Table with data to be displayed

😎 exceptions ---> errors can be handled here.....

[Former Member]

hi here is the code for the simple alv display..

REPORT ztest_alv_perc_13317.

TYPE-POOLS: slis.

DATA: it_fieldcat TYPE slis_t_fieldcat_alv,

wa_fieldcat TYPE slis_fieldcat_alv,

it_events TYPE slis_t_event,

wa_events TYPE slis_alv_event,

it_sort TYPE slis_t_sortinfo_alv,

wa_sort TYPE slis_sortinfo_alv,

l_layout TYPE slis_layout_alv.

TYPES: BEGIN OF ty_itab,

field1(10),

qty1 TYPE i,

qty2 TYPE i,

qty3 TYPE i,

dummy TYPE i,

END OF ty_itab.

DATA: itab TYPE STANDARD TABLE OF ty_itab WITH HEADER LINE,

itab1 TYPE ty_itab.

START-OF-SELECTION.

itab-field1 = 'FIRST'.

itab-qty1 = 2.

itab-qty2 = 1.

itab-qty3 = 5.

itab-dummy = 10.

APPEND itab.

itab-field1 = 'FIRST'.

itab-qty1 = 2.

itab-qty2 = 1.

itab-qty3 = 5.

itab-dummy = 10.

APPEND itab.

itab-field1 = 'FIRST'.

itab-qty1 = 2.

itab-qty2 = 1.

itab-qty3 = 5.

itab-dummy = 10.

APPEND itab.

wa_fieldcat-col_pos = 1.

wa_fieldcat-fieldname = 'FIELD1'.

wa_fieldcat-reptext_ddic = 'field1'.

wa_fieldcat-tabname = 'ITAB'.

APPEND wa_fieldcat TO it_fieldcat.

wa_fieldcat-col_pos = 2.

wa_fieldcat-fieldname = 'QTY1'.

wa_fieldcat-tabname = 'ITAB'.

wa_fieldcat-reptext_ddic = 'field2'.

APPEND wa_fieldcat TO it_fieldcat.

wa_fieldcat-col_pos = 3.

wa_fieldcat-fieldname = 'QTY2'.

wa_fieldcat-tabname = 'ITAB'.

wa_fieldcat-reptext_ddic = 'field3'.

APPEND wa_fieldcat TO it_fieldcat.

wa_fieldcat-col_pos = 4.

wa_fieldcat-fieldname = 'QTY3'.

wa_fieldcat-tabname = 'ITAB'.

wa_fieldcat-reptext_ddic = 'field4'.

APPEND wa_fieldcat TO it_fieldcat.

wa_fieldcat-col_pos = 5.

wa_fieldcat-fieldname = 'DUMMY'.

wa_fieldcat-tabname = 'ITAB'.

wa_fieldcat-reptext_ddic = 'field5'.

APPEND wa_fieldcat TO it_fieldcat.

CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'

EXPORTING

it_fieldcat = it_fieldcat

TABLES

t_outtab = itab .

regards,

venkat