I use mapinfo 4.1 and mapbasic 4.0 on win98
When I write the falloving statements in mapbasic window.
dim a as object
create object as union from selection into variable a
set map clipping object a
Everything is okay. I can rerun the second and third statements.
but in mapbasic, at the first time its okay but when I rerun the sub. clipping are doesn't appear.