| ►Nboost | Extend boost::program_options namespace to include platform specific functions for parsing command line arguments | 
| ►Nopenstudio | All OpenStudio code is placed in the openstudio namespace | 
| CApplicationSingleton | Singleton application wide configuration management | 
| CAttribute | An attribute is a name value pair where the value can be a bool, double, int, string, or vector of other attributes | 
| CAttributeDescription | AttributeDescription describes what an acceptable Attribute is in a given context | 
| CAttributeValueType | A listing of data types that can be held in an Attribute | 
| CAWSComputerInformation |  | 
| CAWSProvider | AWSProvider is a CloudProvider that provides access to Amazon EC2 and CloudWatch services | 
| CAWSSession | AWSSession is a CloudSession | 
| CAWSSettings | AWSSettings is a CloudSettings | 
| CbaseUnitConversionFactor | A struct to store all the information necessary to convert from one base unit to another | 
| CBCL | This is a generic interface that can be used for searching either the local or remote bcl | 
| CBCLComponent |  | 
| CBCLComponentNameGreater |  | 
| CBCLComponentNameLess |  | 
| CBCLCost | This gives information about a cost in a BCL search result | 
| CBCLFacet | This gives information about items from a BCL facet from a meta search result | 
| CBCLFile | This gives information about a single file in a BCL search result | 
| CBCLFileReference | BCLFileReference is a class for tracking files that come with BCL components and measures | 
| CBCLMeasure | BCLMeasure is a class for managing the contents of a BCL Measure directory including the xml description file | 
| CBCLMeasureArgument | BCLMeasureArgument is a class representing an argument of a measure | 
| CBCLMetaSearchResult | This gives information about a meta search result | 
| CBCLProvenance | This gives information about the provenance of a single file in a BCL search result | 
| CBCLSearchResult | This gives information about an item in a BCL search result | 
| CBCLTaxonomyTerm | This gives information about a taxonomy term from the taxonomy | 
| CBCLXML | BCLXML is a class for accessing the common XML structures of BCLComponent and BCLMeasure | 
| CBCLXMLType | Enumeration of the BCL XML file types | 
| CBoundingBox | BoundingBox is an axis aligned cuboid that can check for intersections with another BoundingBox | 
| CBTUExpnt | Structure to hold BTUUnit exponents needed for BTUUnit construction | 
| CBTUUnit | BTUUnit is a Unit with baseUnits fixed by its constructors, see BTUExpnt | 
| CBuildingSector | Commercial or residential | 
| CCalendar | Calendar is a description of a year, noting special days like holidays, special periods like seasons, and daylight savings time | 
| CCalibrationBillingPeriod | CalibrationBillingPeriod is wrapper around Attribute for storing information about model calibration | 
| CCalibrationResult | CalibrationResult is wrapper around Attribute for storing information about model calibration | 
| CCalibrationUtilityBill | CalibrationUtilityBill is wrapper around Attribute for storing information about model calibration | 
| CCelsiusUnit | CelsiusUnit is a TemperatureUnit that supports absolute temperatures in degrees Celsius | 
| CCFMExpnt | Structure to hold CFMUnit exponents needed for CFMUnit construction | 
| CCFMUnit | CFMUnit is a Unit with baseUnits fixed by its constructors, see CFMExpnt | 
| CCloudProvider | CloudProvider is an abstract base class for classes that provide cloud resources | 
| CCloudSession | CloudSession returns the information needed to identify and reconnect to compute nodes started by a previous CloudProvider | 
| CCloudSettings | CloudSettings returns the information needed to use a CloudProvider (e.g. username, password, etc) | 
| CCostLineItem |  | 
| CCostObject |  | 
| CDataError |  | 
| CDataErrorLess | Set comparator for DataError | 
| CDataErrorType | Lists the ways in which an Idf field, object, or collection of objects can be invalid as compared to its Idd | 
| CDate | Date is an absolute unit of time, resolution to the day Date is simple wrapper around boost::gregorian::date | 
| CDateCompare | DateCompare compares two dates, returns true if lhs is less than rhs | 
| CDateTime | DateTime is an absolute unit of time, resolution to the second date is a valid Date time is normalized to 0 <= time < 24 hrs | 
| CDayOfWeek | DayOfWeek is an enumeration of the days of the week: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday | 
| CDocumentFormat | Document output formats supported by OpenStudio | 
| CEconomics |  | 
| CEndUseCategoryType | End use categories reported by OpenStudio | 
| CEndUseFuelType | Fuel types reported by OpenStudio | 
| CEndUses | EndUses is wrapper around Attribute for storing information about end uses | 
| CEndUseType | End uses that can be metered by EnergyPlus | 
| CEnvironmentIdentifier | Small class to let users identify a SqlFile environment period either by type or by name | 
| CEnvironmentType | Frequencies at which report variables may be specified | 
| CEpwDataField |  | 
| CEpwDataPoint | EpwDataPoint is one line from the EPW file | 
| CEpwFile | EpwFile parses a weather file in EPW format | 
| CEulerAngles | Euler angles specify an orientation in space, they characterize: a rotation of psi radians about the x-axis followed by a rotation of theta radians about the y-axis followed by a rotation of phi radians about the z-axis | 
| CException | Base class for exceptions | 
| CFahrenheitUnit | FahrenheitUnit is a TemperatureUnit that supports absolute temperatures in degrees Fahrenheit | 
| CFieldIndexLess |  | 
| CFileLogSink |  | 
| CFileReference |  | 
| CFileReferenceType | Type of files we expect to handle with FileReference | 
| CFirstOfPairLess |  | 
| CFuelType | EnergyPlus meterable fuel types | 
| CGetFirstOfPair |  | 
| CGetSecondOfPair |  | 
| CGPDExpnt | Structure to hold GPDUnit exponents needed for GPDUnit construction | 
| CGPDUnit | GPDUnit is a Unit with baseUnits fixed by its constructors, see GPDExpnt | 
| CIcharCompare | Small functor object for case insensitive char compare | 
| CIddUnitString |  | 
| CIdfExtensibleGroup | IdfExtensibleGroup wraps a single set of extensible fields in an IdfObject | 
| CIdfFile | IdfFile provides parsing and printing of text files in EnergyPlus Input Data File (IDF) format | 
| CIdfObject | IdfObject holds and manipulates data in the EnergyPlus Idd/Idf format | 
| CIdfObjectDiff | IdfObjectDiff represents a change to an IdfObject | 
| CIdfObjectImplLess | Function object for sorting objects by impl | 
| CIdfObjectNameLess | Function object for sorting objects by name | 
| CIdfObjectTypeLess | Function object for sorting by IddObjectType | 
| CIdfObjectWatcher | IdfObjectWatcher watches an IdfObject for signals emitted on changes | 
| CImfFile | ImfFile represents an Imf file | 
| CIndexLess |  | 
| CInstallLocationType | EnergyPlus meter install location | 
| CInterpInfo | Data structure for holding interpolation information | 
| CIntersectionResult | IntersectionResult contains detailed information about an intersection | 
| CIPExpnt | Structure to hold IPUnit exponents needed for IPUnit construction | 
| CIPUnit | IPUnit is a Unit with baseUnits fixed by its constructors, see IPExpnt | 
| CIstringCompare | Small functor object for case insensitive std::string compare | 
| CIstringEqual | Small functor object for case insensitive std::string equality | 
| CIstringFind | Small functor object for case insensitive std::string equality | 
| CIstringPairCompare | Small functor object for case insensitive std::string compare in pairs of std::string, tests first strings then seconds | 
| CKeyValueIdentifier | Small class to let users identify one or more key values by name or regex | 
| CLocalBCL |  | 
| CLoggerSingleton | Singleton logger class | 
| CLogMessage | LogMessage encapsulates a single logging message | 
| CLogSink | LogSink is a class for managing sinks for log messages, e.g. files, streams, etc | 
| CMeasureBadgeType |  | 
| CMeasureType | Enumeration of the types of BCLMeasure, by input file type | 
| CMisc1Expnt | Structure to hold Misc1Unit exponents needed for Misc1Unit construction | 
| CMisc1Unit | Misc1Unit is a Unit with baseUnits fixed by its constructors, see Misc1Expnt | 
| CMonthOfYear | MonthOfYear is an enumeration of months: January, February, March, April, May, June, July, August, September, October, November, December | 
| CMPHExpnt | Structure to hold MPHUnit exponents needed for MPHUnit construction | 
| CMPHUnit | MPHUnit is a Unit with baseUnits fixed by its constructors, see MPHExpnt | 
| CNameFinder | Functor object for finding objects by name | 
| CNthDayOfWeekInMonth | NthDayOfWeekInMonth is an enum for the nth DayOfWeek in MonthOfYear (e.g | 
| CObjectOrderBase | Base class for ordering objects | 
| CObjectPointer | Data structure for specifying connections between IdfWorkspace and other object collections | 
| COSOptionalQuantity | OSOptionalQuantity class to be used in OpenStudio ModelObject properties | 
| COSQuantityVector | Represents a vector of quantities  all with the same units | 
| COSServer | OSServer is a class for accessing the rails server started on machines provided by a CloudProvider | 
| CPathWatcher | Class for watching either a file or directory, QFileSystemWatcher has issues when watching many files so it is not recommended to use too many of these objects | 
| CPlane | Plane defines an infinite plane in 3D space | 
| CPoint3d |  | 
| CProgressBar | ProgressBar wraps a QProgressBar and provides virtual methods setRange, setValue, and setWindowTitle(QString) which may be overridden | 
| CQuantity | Quantity class defines value, unit pairs | 
| CQuantityConverterSingleton | Singleton for converting quantities to different unit systems  or to targeted units | 
| CQuantityFactorySingleton |  | 
| CQueue | Thread safe Queue for message processing | 
| Cqueue_read_canceled | Exception thrown if the user attempts to read data from openstudio::Queue<>, but the Queue is canceled or shutdown | 
| Cqueue_read_empty | Exception thrown if the user attempts to read data from openstudio::Queue<> with a non-blocking call and there is no data available | 
| CRemoteBCL | Class for accessing the remote BCL | 
| CRemoteQueryResponse | This class is used to capture the xml response of a query and store it for later processing | 
| CReportingFrequency | Frequencies at which report variables may be specified | 
| CRubyException |  | 
| CScale | Structure for holding scale prefixes such as kilo and centi | 
| CScaleFactorySingleton | Singleton that creates scales based on std::string or exponent | 
| CScope | Indicates whether a ValidityReport or DataError pertains to a single field, a single object, or the entire collection | 
| CSecondOfPairLess |  | 
| CSIExpnt | Structure to hold SIUnit exponents needed for SIUnit construction | 
| CSingleton |  | 
| CSIUnit | SIUnit is a Unit with baseUnits are fixed by its constructors, see SIExpnt | 
| CSqlFile | SqlFile class is a transaction script around the sql output of EnergyPlus | 
| CSqlFileTimeSeriesQuery | Class to hold information about one or more SqlFile time series of interest | 
| CStrictnessLevel | Specifies the desired amount of validity | 
| CStringStreamLogSink |  | 
| CStructNameFinder | Functor object for finding objects by name | 
| CSummaryData |  | 
| CSystem |  | 
| CTag |  | 
| CTemperatureConversionRule |  | 
| CTemperatureUnit | TemperatureUnit is an abstract Unit for handling temperatures | 
| CTemporaryDirectory |  | 
| CThermExpnt | Structure to hold ThermUnit exponents needed for ThermUnit construction | 
| CThermUnit | ThermUnit is a Unit with baseUnits Btu, ft, h, R, and people | 
| CTime | Time is a relative unit of time, resolution to the second Time is simple wrapper around boost::posix_time::time_duration Internally totalSeconds is the primary definition of time (i.e | 
| CTimeCompare | TimeCompare compares two times, returns true if lhs is less than rhs | 
| CTimeSeries | TimeSeries is a series of values each reported at a single time | 
| CTimeSeriesIdentifier | Small class to let users identify a time series by name, or a set of time series by regex | 
| CTransformation |  | 
| CUnit | Base class that holds unit information in the form of (string,exponent) pairs | 
| CUnitFactorySingleton | Singleton that creates units based on std::string representation | 
| CUnitSystem | Unit systems supported by OpenStudio's runtime units utility | 
| CUnzipFile |  | 
| CUpdateManager | Class for checking whether a new version of OpenStudio is available for download | 
| CURLSearchPath |  | 
| CVagrantProvider | VagrantProvider is a CloudProvider that provides access to local Vagrant virtual machines for testing | 
| CVagrantSession | VagrantSession is a CloudSession | 
| CVagrantSettings | VagrantSettings is a CloudSettings | 
| CValidityReport |  | 
| CValueFinder | Functor object for finding objects by value | 
| CVector3d |  | 
| CVectorStruct | Workaround to get Vector typedef, http://www.gotw.ca/gotw/079.htm | 
| CVersionString |  | 
| CWhExpnt | Structure to hold WhUnit exponents needed for WhUnit construction | 
| CWhUnit | WhUnit is a Unit with baseUnits W, h, m, K, and people | 
| CWorkspace | Workspace holds a collection of interconnected WorkspaceObjects | 
| CWorkspaceExtensibleGroup | WorkspaceExtensibleGroup wraps a set of extensible fields in a WorkspaceObject | 
| CWorkspaceObject | WorkspaceObject holds and manipulates data objects in Energyplus IDF format in the context of a Workspace | 
| CWorkspaceObjectDiff | WorkspaceObjectDiff represents a change to an WorkspaceObjectDiff | 
| CWorkspaceObjectNameGreater |  | 
| CWorkspaceObjectNameLess |  | 
| CWorkspaceObjectOrder | Public interface of WorkspaceObjectOrder | 
| CWorkspaceObjectWatcher |  | 
| CWorkspaceWatcher | WorkspaceWatcher watches a Workspace for signals emitted on changes | 
| CYearDescription | YearDescription describes a year with several optional parameters | 
| CZipFile |  | 
| CQObject |  |