Please tell me what are the main events in alv and their FM and why we use these:

1. SLIS_PRINT_ALV.
2. SLIS_T_LISTHEADER.
3. SLIS_T_EVENT.
4. SLIS_T_SORTINFO_ALV.
5. SLIS_T_LAYOUT_ALV.
6. SLIS_T_FIELDCAT_ALV.

and in classic reports what is the sequence of events:

=== Events are
At selection-screen output.
Initialization.
At selection-screen on field
At selection-screen on end of field
At selection-screen on Radiobutton Group R1. (If you have any radio buttons)
At selection-screen on block b1. (If you have any blocks)
Start-of-selection.
Get node. (if the data is retreived from a logical database)
Get node late. (if the data is retreived from a logical database)
Top-of-page. (if the write statement is in the end-of-selection event or we can say that before the first write statement)
end-of-selection.
and fuction modules are

LISTHEADER - Is used to print the header information in the ALV List. Name, Date, Time, ALV Name and other details are called as Header information.

EVENT - Basically this is the FM to handle Event's. When the user needs to do some event operation like when double clicking the a particular field we need to perform some operation.

These events are captured by this FM.

LAYOUT - This FM is used to define the layout of the List. There are many options available in this FM to define the Layout style.

FIELDCAT - These are used to populate the List header. We can change them according to our req.

These are some of the FM. I hope it is useful.

Rashi

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