mysql - Writing to a MySQL ENUM column by index using ODBC

Question

From the MySQL reference manual:

If you store a number into an ENUM column, the number is treated as the index into the possible values, and the value stored is the enumeration member with that index.

But when I try to write an SQL_SMALLINT value to that ENUM column using ODBC I get the error HY000:1:1265 (Data truncated for column ...).

So how can I write a number into a MySQL ENUM column using ODBC, such that this number is interpreted as the enum index?

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Edit: Some more information

The column is defined as:

`TrackState` ENUM('NEWE','NEWN','VALID','INVISIBLE','CLOSED','DIED') NULL

and the statement used with ODBC is:

INSERT INTO test (TrackState) VALUES (?)

and in my C code I use SQLBindParameter with SQL_C_USHORT and SQL_SMALLINT to bind an unsigned short variable.

When I change my TrackState column to an ordinary INT column, the numeric value (which I want to be interpreted as the index of an enum) is successfully written.