How to use 'CRecordset' to get a long database record?

I've defined a database table in ORACLE 8, one of its field's data type is 'LONG'. Now I want to use MFC database classes(CDatabase and CRecordset) to show the record's value (the field has about 400 characters), I get a message "The data has been truncated." I think it's maybe caused because the edit buffer in MFC is too short, but I don't know how to solve this question.
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Mae Your own class inheritor from CDaoRecordset. Make this field as CString and in DoFieldExchange
DFX_Text(pFX, _T("[YourFieldName]"), YourFieldName, 400 + 1);
Thah must to be work and with CRecordset but than macros is RFX_Text with same params. Default value and in DFX , and in RFX for size for text is 255. Try it!

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.