ArcGIS Engine Developer Guide

C++ APPLICATION PROGRAMMING INTERFACE
When using the smart type CComBSTR, the above two functions will not be
needed. However, you can create and free BSTRs with them, as illustrated in the
following example:
// Display the feature type as "simple" or "other".
BSTR bsFeatureType;
esriFeatureType featType;
pFeatureClass->get_FeatureType(&featType);
switch (featType)
{
case esriFTSimple :
bsFeatureType = ::AoAllocBSTR(L"simple");
break;
default:
bsFeatureType = ::AoAllocBSTR(L"other");
}
std::wcerr get_Fields(&ipFields);
long fieldCount;
hr = ipFields->get_FieldCount(&fieldCount);
IFieldPtr ipField;
226 • ArcGIS Engine Developer Guide