A demo program to create subscreen in your ABAP Program..."Last Login Details"

* This report will display the user last login date and time.
*
* Subscreen selection 1 : User Name
* 2 : Last Login Date
* 3 : Class Belong To
*
* Written by : SAP Basis, ABAP Programming and Other IMG Stuff
* http://sapabap-vamsi.blogspot.com/
*

REPORT ZSUBSCREEN.

TABLES: USR02, "Logon data
SSCRFIELDS. "FIELDS ON SELECTION SCREENS
*---------------------------------------------------------------
* SUBSCREEN 1
*---------------------------------------------------------------
SELECTION-SCREEN BEGIN OF SCREEN 100 AS SUBSCREEN.
SELECTION-SCREEN BEGIN OF BLOCK B1 WITH FRAME TITLE TEXT-010.
SELECT-OPTIONS: USERNAME FOR USR02-BNAME.
SELECTION-SCREEN END OF BLOCK B1.
SELECTION-SCREEN END OF SCREEN 100.

*---------------------------------------------------------------
* SUBSCREEN 2
*---------------------------------------------------------------
SELECTION-SCREEN BEGIN OF SCREEN 200 AS SUBSCREEN.
SELECTION-SCREEN BEGIN OF BLOCK B2 WITH FRAME TITLE TEXT-020.
SELECT-OPTIONS: LASTLOGI FOR USR02-TRDAT.
SELECTION-SCREEN END OF BLOCK B2.
SELECTION-SCREEN END OF SCREEN 200.

*---------------------------------------------------------------
* SUBSCREEN 3
*---------------------------------------------------------------
SELECTION-SCREEN BEGIN OF SCREEN 300 AS SUBSCREEN.
SELECTION-SCREEN BEGIN OF BLOCK B3 WITH FRAME TITLE TEXT-030.
SELECT-OPTIONS: CLASSTYP FOR USR02-CLASS.
SELECTION-SCREEN END OF BLOCK B3.
SELECTION-SCREEN END OF SCREEN 300.

* STANDARD SELECTION SCREEN FOR SCROLLING LEFT AND RIGHT
SELECTION-SCREEN: FUNCTION KEY 1,
FUNCTION KEY 2.

SELECTION-SCREEN: BEGIN OF TABBED BLOCK SUB FOR 15 LINES,
END OF BLOCK SUB.

START-OF-SELECTION.
SELECT * FROM USR02 WHERE BNAME IN USERNAME
AND ERDAT IN LASTLOGI
AND CLASS IN CLASSTYP.
WRITE: / 'User ', USR02-BNAME,
'Last Login Date ', USR02-TRDAT,
'Last Login Time ', USR02-LTIME,
'CLASS ', USR02-CLASS.
ENDSELECT.
END-OF-SELECTION.

INITIALIZATION.
* SCREEN ICON LEFT AND RIGHT
SSCRFIELDS-FUNCTXT_01 = '@0D@'.
SSCRFIELDS-FUNCTXT_02 = '@0E@'.
SUB-PROG = SY-REPID.
SUB-DYNNR = 100.

AT SELECTION-SCREEN.
CASE SY-DYNNR.

WHEN 100.
IF SSCRFIELDS-UCOMM = 'FC01'.
SUB-DYNNR = 300.
ELSEIF SSCRFIELDS-UCOMM = 'FC02'.
SUB-DYNNR = 200.
ENDIF.