return returnCode == ERROR_SUCCESS;
    }

    /**
     * Gets the error message for the current return code.
     *
     * @return a human-readable error message
     */
    public String getErrorMessage() {
        switch (returnCode) {
        case ERROR_SUCCESS:
            return "Success";
        case ERROR_INVALID_PARAMETER:
            return "Invalid parameter";
        case ERROR_INSUFFICIENT_BUFFER: