Main use of this method (CALL METHOD cl_gui_cfw=>dispatch ) is " to dispatch the application events to the event handler registered for events. "
If you do not call the method in PAI event, after processing of PAI it is called the events automatically and return the return_code.
This link is very use full for u...
www.erpgenie.com/abap/controls/how.htm
--Ranveer
ranveerpsingh@gmail.com
