MDAC 2.5 SDK - OLE DB Programmer's Reference
Appendix H: Data Type Conversion Interfaces

IDataConvert::CanConvert

Returns information about whether the conversion from the specified source type to the specified destination type is supported.

HRESULT CanConvert (
   DBTYPE   wSrcType,
   DBTYPE   wDstType);

Parameters

wSrcType

[in]
The source type of the conversion to be verified.

wDstType

[in]
The destination type of the conversion to be verified.

Return Code

S_OK

The method succeeded and the conversion is supported.

S_FALSE

The requested conversion is not supported.

E_INVALIDARG

One or more of the DBTYPE values specified was invalid.