Regarding Runtime creation of Check Boxes in sap abap

For this...

Create an Internal table as :

data: Begin itab occurs 0,
cb_field type char1,
matnr like mara-matnr,
.....
end of itab.

Now you fetch the data into the internal table of itab using
some query...

select * ......

Now you are going to display it as....

Loop at itab.
write:/ cb_field as checkbox...
......
at this time only write the Hide statement.... as...

HIDE: values.... u want...

Endloop..

Now capturing of selected data process...

This can be done by clicking on some USER Command button...

for suppose you're clicking F8 means...

AT pf8.
IF SY-LSIND = 1.
describe table itab lines VARIABLE NAME.
cnt = 3. " Initiate value for Count 3 if you're including page header.
do VARIABLE NAME times.
read line cnt. " Above counter....
if sy-lisel(1) = 'X'.
WRITE:/ 'SELECTED RECORDS:', itab-cb_field,.....
endif.
COUNTER = COUNTER - 1.
cnt = cnt + 1.
enddo.
ENDIF.