Hi, Nareshkumar Patel
After a long pause, I've returned to implementation of this requirement.
As you advised, I've ehnanced CL_THTMLB_F4HELP class with ZCL_THTMLB_F4HELP.
And now I expected to go to methods list of CL_THTMLB_F4HELP, select GET_DATA( ) method and click on REDEFINITION icon and add to implement some maintenance changes. Exactly as I do it with methods in components' classes.
But when I click on this icon I got the following message: «GET_DATA( ) is the method of the class CL_THTMLB_F4HELP».
I've tried to find solution in:
http://help.sap.com/saphelp_nw04s/helpdata/en/5f/103a4280da9923e10000000a155106/content.htm
http://help.sap.com/saphelp_nw04s/helpdata/en/86/b83142680d5c33e10000000a155106/content.htm
What I'm doing wrong and how to achieve the result, that I can add changes to GET_DATA( ) method?
Thanks.