Gerhard,

g> calling the methode FieldByName of the IBOQuery component should
g> return a pointer to a TIB_ Column object as i see it.

no, it should return a TField reference as it does. A TDataSet
derivative is supposed to use TField objects for the columns.

g> Has anywhere a better solution for IBOQuery ?

Have you tried AsLargeInt?
Ciao
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