Adding F1 help.

Question

I have added one check box in selection screen which is not related to any table field. I want to add F1 help on it. For that I need to write a subroutine which is called when F1 help is asked by user. To open a new window and display the disired text what should be done? I tried to write code for opening a window and display text but it is not working. Is there any function module which can be used?
Thanks in advance for your help.
Ashish

Answer 1

If you want to call your own code to display F1 help, here is what I recommend.
Do transaction SE61, in the Settings Box, Document Class, use the help button to pick General Text.  Create text starting with a Z name like ZCDF_TEST.  Save and activate.
Then use the following code to respond to the F1 request:
CALL FUNCTION 'DSYS_SHOW_FOR_F1HELP'                   
   EXPORTING                                             
     dokclass = 'TX'                                  
     dokname  = 'ZCDF_TEST'
     doktitle = 'Put your own title here'
     appendix = 'X'                          
   EXCEPTIONS                                            
     class_unknown            = 1                     
     object_not_found         = 2                     
     OTHERS                   = 3.
This will display your customized help doc in exactly the same way that the system displays help documentation.  You would put the call to this FM in the event AT SELECTION_SCREEN ON HELP... as discussed earlier.
Let us know how it goes.