Whereas DXARESULT contains a positive-valued error code, DXASRESULT is intended for returning size and length values together with error codes. If the return value is zero or positive, it indicates a size or length, but if it is negative, it indicates an error with negated error code.

The error codes are listed in dxaerr.h.

Notice that the DXASRESULT return type name should only be used for error codes in Ebsotech IX™ SDK error code value space, as defined in dxaerr.h. For your own error (return) codes, you should use your own value space, and store it in variables of different type. With this convention, you avoid confusion between different error code spaces.