How to check for DBNull in C++ - ADO recordset fields? -

How to check for DBNull in C++ - ADO recordset fields? -

i trying retrieve info sql server via ado in c++ , how can check null values recordset fields? thre no isnull() function?

testing dbnull in c++ ado record set involves checking fieldpointer->value property, of type variant. test null variant values, check vt field, null values vt_null.

so test dbnull, check fieldpointer->value.vt == vt_null

c++ ado