New ALV report development

Question

Hi gurus,
iam new to abap.
i have a requirement to develop a report program. the layout is:
palnt :_________
date:__________
1.initial report(button)
2.category wise(button)
3.per plant(button).
the above are the fields in my report.
when i enter the plant and date, and press any of the buttons, the report should be displayed within the same screen below the selection data itself..
the report is alv type, So overall my report goes with only one screen. So please guide me how to start with the navigation between the buttons and the screen.
please give a detailed explanation and not the ex codes.
points will be rewarded.
chaitu

Answer 1

this is a simple pgm i developed a loooong time ago for subscreen areas.
check it out.
*& Module pool       ZPK_SUB_SCREEN                                    *
PROGRAM  ZPK_SUB_SCREEN.
CONTROLS: TABC TYPE TABLEVIEW USING SCREEN 1002.
DATA: TCODE(4) TYPE C,
      BEGIN OF WA_T001,
        BUKRS TYPE BUKRS,
        BUTXT TYPE BUTXT,
      END OF WA_T001,
      IT_T001 LIKE TABLE OF WA_T001,
      WA_MARA TYPE MARA,
      IT_MARA LIKE TABLE OF WA_MARA.
*&      Module  STATUS_1000  OUTPUT
      text
module STATUS_1000 output.
  SET PF-STATUS 'MY_STATUS'.
SET TITLEBAR 'xxx'.
CASE SY-UCOMM.
WHEN 'BACK'.
LEAVE PROGRAM.
ENDCASE.
endmodule.                 " STATUS_1000  OUTPUT
*&      Module  USER_COMMAND_1001  INPUT
      text
module USER_COMMAND_1001 input.
CASE SY-UCOMM.
  WHEN 'EXE'.
  CALL TRANSACTION TCODE.
ENDCASE.
endmodule.                 " USER_COMMAND_1001  INPUT
*&      Module  USER_COMMAND_1002  INPUT
      text
module USER_COMMAND_1002 input.
CASE SY-UCOMM.
  WHEN 'DISP'.
  SELECT BUKRS BUTXT INTO TABLE IT_T001 FROM T001 UP TO 10 ROWS.
ENDCASE.
endmodule.                 " USER_COMMAND_1002  INPUT
*&      Module  USER_COMMAND_1003  INPUT
      text
module USER_COMMAND_1003 input.
CASE SY-UCOMM.
  WHEN 'ALV'.
    SELECT * INTO TABLE IT_MARA FROM MARA UP TO 5 ROWS.
    CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
     EXPORTING
       I_CALLBACK_PROGRAM                = 'SY-CPROG'
       I_STRUCTURE_NAME                  = 'MARA'
      TABLES
        t_outtab                          = IT_MARA.
ENDCASE.
endmodule.                 " USER_COMMAND_1003  INPUT
MAIN SCREEN FLOW LOGIC
PROCESS BEFORE OUTPUT.
  MODULE STATUS_1000.
CALL SUBSCREEN: SS1 INCLUDING SY-REPID '1001',
                SS2 INCLUDING SY-REPID '1002',
                SS3 INCLUDING SY-REPID '1003'.
PROCESS AFTER INPUT.
  CALL SUBSCREEN: SS1, SS2, SS3.
MODULE USER_COMMAND_1000.
SUBSCREEN1 FLOW LOGIC
PROCESS BEFORE OUTPUT.
MODULE STATUS_1001.
PROCESS AFTER INPUT.
  MODULE USER_COMMAND_1001.
SUBSCREEN2 FLOW LOGIC
PROCESS BEFORE OUTPUT.
MODULE STATUS_1002.
LOOP AT IT_T001 INTO WA_T001 WITH CONTROL TABC
  CURSOR TABC-TOP_LINE.
ENDLOOP.
PROCESS AFTER INPUT.
LOOP.
ENDLOOP.
MODULE USER_COMMAND_1002.
SUBSCREEN2 FLOW LOGIC
PROCESS BEFORE OUTPUT.
MODULE STATUS_1003.
PROCESS AFTER INPUT.
MODULE USER_COMMAND_1003.
pk