how to create report at run time?

hi
i have project in vb6 and crystal report 10 and i want to create report at run time coz i donot know number of colums.
can help me plzzz

Google Crystal Reports RCAPI
You'll need to pay an additional license fee

Doing any report designing dynamically does require the additional license jggtz mentions. Its not cheap either.

Why not just use the conditional formatting to hide/show columns depending on the returned results?

i search on report generator but i donot get any thing.
but i search on how to hide/show filed i get Suppress proparty if it =true the
filed hide but i need to make use control on wighd page too portrait or landscape and after he select wighd page fileds divide on page
with similar space.
and any way thank for your answer

It's not report generator, it's Crystal Reports Report Creation API

Also
You can make 2 reports (1 for portrait & 1 for landscape) and process them according to user selection

thank you for your answer to help me .
i will try do what you say it nice think to make 2 reports
and i will try usa hide/show too