Selection screen (application toolbar)

Question

Hi,
Here I have following scenario:
Execute Selection screen 1(1000) -> Calls selection screen2(500) -> Calls and execute smart form
Flow is like this :
in start-of-selection.
initial coding for second screen.
Call Selection-screen 500.
Then call function 'SSF_FUNCTION_MODULE_NAME'.
Now if i click back button in smart form its going to selection screen 1which is quite acceptable, but if we are clicking BACK or CANCEL or EXIT button in selection screen 2(500) instead of going to Selection screen 1(1000) its calling the smart form. If i click debug and click back button in selection screen2 (500) the pointer is coming directly to following statement in start-of selection:
Call Selection-screen 500.
and in this time after F5 if i check sy-dynnr it comes 1000 and sy-ucomm it comes blank
Can you please tell me what code should I need to write to handle BACK, CANCEL,EXIT for second selection screen 2(500) and at which point and at which event. Please suggest.
I will definetly .............

Answer 1

Hi,
Write LEAVE TO SCREEN 0 in the PAI of screen 500.
MODULE user_command_0500 INPUT.
  CASE g_ok_code.
    WHEN 'BACK' OR 'EXIT'.
    Goto Selection screen
      LEAVE TO SCREEN 0.
    WHEN  'CANC' .
      LEAVE PROGRAM.
    WHEN OTHERS.
    Do Nothing
  ENDCASE.
  CLEAR : g_ok_code.
ENDMODULE.