How to use at cursor selection

Question

hi gurus,
         can anyone tell wats the purpose of
'At cursor-selection' and how to use it in pai module?????
regards,
balaji.s

Answer 1

hi balaji,
The Best explanation with example comes from our help.sap.com....
http://help.sap.com/saphelp_nw04/helpdata/en/9f/dbabbd35c111d1829f0000e829fbfe/content.htm
Also this might help...
MODULE mod CURSOR-SELECTION}
CHAIN-REQUEST}
SWITCH switch .
... AT CURSOR-SELECTION
The AT CURSOR-SELECTION addition at the event PAI causes the module mod to be called only if
The function used to trigger event PAI has function code "CS" and function type "S"
The cursor is placed on a single input or output field of the screen at the moment of the user action
The call occurs within the usual PAI processing, meaning that the automatic input checks defined in the system or in the ABAP Dictionary are executed and the MODULE statement is called according to its position in the event block. You can use the addition in connection with the FIELD statement.
If the PAI event is triggered under the above circumstances, the function code is not passed to sy-ucomm and the OK field. They keep their previous values.
Note
The function type and function code of a function are determined in the Screen Painter or in the Menu Painter. We recommend to assign function code "CS" in the Menu Painter to function key F2 in order to simultaneously assign the double-click function of the mouse to it. This allows you to assign dialog modules to the selection of input or output fields.
Link: [Re: MODULE REQUEST;
Thanks,
reward If Helpful.