CFieldExchange::IsFieldType
If you write your own RFX function, call IsFieldType at the beginning of your function to determine whether the current operation can be performed on a particular field or parameter data member type (a CFieldExchange::outputColumn, CFieldExchange::inputParam, CFieldExchange::param, CFieldExchange::outputParam, or CFieldExchange::inoutParam).
BOOL IsFieldType(
UINT* pnField
);
Parameters
- pnField
The sequential number of the field or parameter data member is returned in this parameter. This number corresponds to the data member's order in the CRecordset::DoFieldExchange or CRecordset::DoBulkFieldExchange function.
Return Value
Nonzero if the current operation can be performed on the current field or parameter type.
Remarks
Follow the model of the existing RFX functions.
Requirements
Header: afxdb.h