BCGSuite for MFC
BOOL CBCGPAppointmentPropertyList::Set ( DWORD  ID,
CBCGPAppointmentBaseProperty pProperty 
)

Updates a property value at the specified ID.

Returns
TRUE, if the property value has been updated successfully; otherwise FALSE.

Use this method to update a property located at the specified ID. The function fails if the property does not exist. In this case you should use CBCGPAppointmentPropertyList::Add.

Parameters
IDSpecifies the ID at which the property should be updated.
pPropertyPoints to a property that contains the new data to set.