Hi,
To write report heading use the function module 'REUSE_ALV_COMMENTARY WRITE'. In case ur using a ALV list you could also use WRTIE statements to create ur headers.
AS far as EVENTS go there is a fucntion module that returns all possible events that are possible. What you need to do is to modify that table with the form-routine names against the events that u want to use. Pass this table when u call the function module 'REUSE_ALV_GRID_DISPLAY'.
check out the development class SLIS.. lots ofexamples
