public int CreateScalarFunction(IDbHandle db, IScalarFunction sqliteFunction)
{
var internalDbHandle = (DbHandle)db;
var funcCallbackExecutor = new FuncCallbackExecutor(
sqliteFunction,
SQLiteApiWin32Internal.GetAnsiString,
SQLiteApiWin32Internal.sqlite3_result_int
);
var func = new SQLiteApiWin32Internal.FuncCallback(funcCallbackExecutor.Execute);
_allocatedGCHandles.Add(GCHandle.Alloc(func));
return(SQLiteApiWin32Internal.sqlite3_create_function(
internalDbHandle.DbPtr,
Encoding.UTF8.GetBytes(sqliteFunction.Name),
sqliteFunction.ValueGetters.Length,
SQLiteEncodings.SQLITE_UTF8,
IntPtr.Zero,
func,
null,
null));
}