Mother of all ROOT objects.

The TObject class provides default behaviour and protocol for all objects in the ROOT system. It provides protocol for object I/O, error handling, sorting, inspection, printing, drawing, etc. Every object which inherits from TObject can be stored in the ROOT collection classes.

TObject's bits can be used as flags, bits 0 - 13 and 24-31 are reserved as global bits while bits 14 - 23 can be used in different class hierarchies (watch out for overlaps).

\Note Class inheriting directly or indirectly from TObject should not use = default for any of the constructors. The default implementation for a constructor can sometime do 'more' than we expect (and still being standard compliant). On some platforms it will reset all the data member of the class including its base class's member before the actual execution of the base class constructor. TObject's implementation of the IsOnHeap bit requires the memory occupied by TObject::fUniqueID to not be reset between the execution of TObject::operator new and the TObject constructor (Finding the magic pattern there is how we can determine that the object was allocated on the heap).

Definition at line 41 of file TObject.h.

Public Types
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Public Member Functions
	TObject ()
	TObject constructor.

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

virtual const char *	ClassName () const
	Returns name of class to which the object belongs.

virtual void	Clear (Option_t *="")

virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility.

virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method.

virtual void	Copy (TObject &object) const
	Copy this to obj.

virtual void	Delete (Option_t *option="")
	Delete this object.

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: `gROOT->SetSelectedPad(c1)`.

virtual void	Dump () const
	Dump contents of object on stdout.

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message.

virtual void	Execute (const char method, const char params, Int_t *error=nullptr)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=nullptr)
	Execute method on this object with parameters stored in the TObjArray.

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message.

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.

virtual const char *	GetIconName () const
	Returns mime type name of object.

virtual const char *	GetName () const
	Returns name of object.

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

virtual const char *	GetTitle () const
	Returns title of object.

virtual UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

virtual ULong_t	Hash () const
	Return hash value for this object.

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message.

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.

void	InvertBit (UInt_t f)

virtual TClass *	IsA () const

Bool_t	IsDestructed () const
	IsDestructed.

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

virtual Bool_t	IsSortable () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout.

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification (the base implementation is no-op).

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.

void	operator delete (void *ptr)
	Operator delete.

void	operator delete (void ptr, void vp)
	Only called by placement new when throwing an exception.

void	operator delete[] (void *ptr)
	Operator delete [].

void	operator delete[] (void ptr, void vp)
	Only called by placement new[] when throwing an exception.

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator.

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.

virtual void	Print (Option_t *option="") const
	This method must be overridden when a class wants to print itself.

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename.

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.

virtual void	Streamer (TBuffer &)
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message.

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Longptr_t	GetDtorOnly ()
	Return destructor only flag.

static Bool_t	GetObjectStat ()
	Get status of object stat flag.

static void	SetDtorOnly (void *obj)
	Set destructor only flag.

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Protected Types
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

Protected Member Functions
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected).

void	MakeZombie ()

Static Private Member Functions
static void	AddToTObjectTable (TObject *)
	Private helper function which will dispatch to TObjectTable::AddObj.

Private Attributes
UInt_t	fBits
	bit field status word

UInt_t	fUniqueID
	object unique identifier

Static Private Attributes
static Longptr_t	fgDtorOnly = 0
	object for which to call dtor only (i.e. no delete)

static Bool_t	fgObjectStat = kTRUE
	if true keep track of objects in TObjectTable

Friends
bool	ROOT::Internal::DeleteChangesMemoryImpl ()

class	TClonesArray

#include <TObject.h>

Inherited by TEveRecTrackT< Float_t >, TMatrixTBase< Double_t >, TMatrixTBase< AReal >, TParameter< Long64_t >, TVectorT< Double_t >, DummyObject, Hit, Jet, JetEvent, RCaloTower, ROOT::Detail::TSchemaRuleSet, ROOT::Experimental::REveTrans, ROOT::Experimental::REveVSD, ROOT::Experimental::TTreeReaderFast, ROOT::Internal::TCheckHashRecursiveRemoveConsistency, ROOT::Internal::TTreeReaderDescriptor, ROOT::R::TRDataFrame, ROOT::R::TRFunctionExport, ROOT::R::TRFunctionImport, ROOT::R::TRInterface, ROOT::R::TRObject, ROOT::RBrowserDataCleanup, ROOT::TSchemaRule, RecHit, RooAbsCollection, RooCFunction1Ref< VO, VI >, RooCFunction2Ref< VO, VI1, VI2 >, RooCFunction3Ref< VO, VI1, VI2, VI3 >, RooCFunction4Ref< VO, VI1, VI2, VI3, VI4 >, RooCatType, RooCmdConfig, RooExpensiveObjectCache, RooHelpers::WrapIntoTObject< T >, RooLinkedList, RooMinimizer, RooMsgService, RooNumGenConfig, RooNumGenFactory, RooNumIntConfig, RooNumIntFactory, RooSharedProperties, RooStats::AcceptanceRegion, RooStats::HistFactory::HistoToWorkspaceFactoryFast, RooStats::MetropolisHastings, RooStats::ProposalFunction, RooStats::ProposalHelper, RooStats::SamplingSummary, RooStats::SamplingSummaryLookup, RooWorkspace::CodeRepo, TASPaletteEditor::PaintPalette, TApplication, TArchiveFile, TArchiveMember, TAuthenticate, TAxisModLab, TBinomialEfficiencyFitter, TBits, TBox, TBuffer, TBuffer3D, TClassDocInfo, TClassGenerator, TClassMenuItem, TClassTable, TCollection, TCondition, TConditionImp, TCondor, TCondorSlave, TConfidenceLevel, TDNDData, TDataSetManager, TDecayChannel, TDecompBase, TDictAttributeMap, TDimensionInfo, TDocMethodWrapper, TDocOutput, TDocParser, TDrawFeedback, TEllipse, TEntryListBlock, TEnv, TEnvRec, TEveCluster, TEveFrameBox, TEveGeoNode, TEveGridStepper, TEveHit, TEveMCRecCrossRef, TEveRGBAPalette, TEveRecCascade, TEveRecKink, TEveRecTrackT< TT >, TEveRecV0, TEveTrans, TEveVSD, TEventIter, TExMap, TF1AbsComposition, TFPBlock, TFTP, TFeldmanCousins, TFileCacheRead, TFileCacheWrite, TFileMerger, TFilePrefetch, TFoam, TFoamCell, TFoamIntegrand, TFoamMaxwt, TFoamVect, TFormLeafInfo, TFractionFitter, TFree, TGClient, TGDMLParse, TGDMLRefl, TGDMLWrite, TGDNDManager, TGFrameElement, TGGC, TGHtmlElement, TGHtmlImage, TGHtmlLayoutContext, TGHtmlUri, TGIdleHandler, TGItemContext, TGLAutoRotator, TGLCamera, TGLLightSet, TGLPShapeObj, TGLayoutHints, TGLayoutManager, TGMainFrame::TGMapKey, TGMenuEntry, TGMime, TGMimeTypes, TGObject, TGPicture, TGPicturePool, TGRectMap, TGRegion, TGTextEditCommand, TGTextLayout, TGUnknownWindowHandler, TGWin32CallBackObject, TGedFrame::TGedSubFrame, TGedTabInfo, TGenPhaseSpace, TGeoBatemanSol, TGeoBoolNode, TGeoBranchArray, TGeoBuilder, TGeoCacheState, TGeoChecker, TGeoDecayChannel, TGeoElementTable, TGeoExtension, TGeoGlobalMagField, TGeoHelix, TGeoIteratorPlugin, TGeoNavigator, TGeoNodeCache, TGeoPatternFinder, TGeoPolygon, TGeoTabManager, TGeoVoxelFinder, TGraph2DPainter, TGraphEdge, TGraphStruct, TGrid, TGridCollection, TGridJDL, TGridJob, TH2PolyBin, THLimitsFinder, THnChain, THnIter, THnSparseArrayChunk, THostAuth, THtml, THtml::TFileSysEntry, THtml::THelperBase, THttpCallArg, TIconBoxThumb, TImagePalette, TImagePlugin, TInetAddress, TInspectorObject, TJSONStackObj, TKDTree< Index, Value >, TKDTreeBinning, TLegendEntry, TLimitDataSource, TLine, TLockFile, TLockPath, TLorentzRotation, TLorentzVector, TMLPAnalyzer, TMVA::DataInputHandler, TMVA::DataSetFactory, TMVA::DataSetInfo, TMVA::DataSetManager, TMVA::Event, TMVA::Experimental::ClassificationResult, TMVA::MsgLogger, TMVA::OptionBase, TMVA::PDEFoam, TMVA::PDEFoamCell, TMVA::PDEFoamDensityBase, TMVA::PDEFoamKernelBase, TMVA::PDEFoamVect, TMVA::Results, TMVA::RootFinder, TMVA::TNeuron, TMVA::TSynapse, TMVA::TreeInfo, TMVA::VariableTransformBase, TMarker, TMarker3DBox, TMatrixTBase< Element >, TMatrixTLazy< Element >, TMatrixTSymLazy< Element >, TMergerInfo, TMethodCall, TMonitor, TMrbSubevent_Caen, TMultiLayerPerceptron, TMutexImp, TNDArray, TNamed, TNotifyLinkBase, TObjString, TObjectRefSpy, TObjectSpy, TObjectTable, TOptionListItem, TOutputListSelectorDataMap, TPBHandleDSType, TPBHistType, TPBReadType, TPackageDescription, TPacketizer::TFileNode, TPacketizer::TFileStat, TPacketizerAdaptive::TFileNode, TPacketizerAdaptive::TFileStat, TPacketizerFile::TIterObj, TPair, TParameter< AParamType >, TParticle, TPerfEvent, TPluginHandler, TPluginManager, TPoints3DABC, TPolyLine, TPolyLine3D, TPolyMarker, TPolyMarker3D, TPrimary, TProofBench, TProofBenchDataSet, TProofBenchRun, TProofNodeInfo, TProofNodes, TProofPerfAnalysis::TWrkEntry, TProofProgressInfo, TProofProgressStatus, TProofResources, TPyDispatcher, TQSlot, TQpDataBase, TQpLinSolverBase, TQpProbBase, TQpResidual, TQpSolverBase, TQpVar, TQuaternion, TQueryDescription, TQueryResultManager, TRWLock, TRatioPlot, TRealData, TRecEvent, TRecWinPair, TRecorder, TRef, TRefTable, TRobustEstimator, TRolke, TRootBrowserHistoryCursor, TRootSnifferStore, TRotation, TS3HTTPRequest, TSPlot, TSQLClassColumnInfo, TSQLClassInfo, TSQLColumnData, TSQLObjectData, TSQLObjectDataPool, TSQLObjectInfo, TSQLResult, TSQLRow, TSQLServer, TSQLStatement, TSQLStructure, TSQLTableData, TSVDUnfold, TSecContext, TSecContextCleanup, TSelector, TSemaphore, TSessionDescription, TSlave, TSlaveInfo, TSpectrum2Transform, TSpider, TSplinePoly, TSqlCmdsBuffer, TSqlRawBuffer, TSqlRegistry, TStatistic, TStatsFeedback, TStopwatch, TStreamerInfoActions::TActionSequence, TStreamerInfoActions::TConfiguredAction, TStructNode, TStructViewer, TSynapse, TSysEvtHandler, TTVRecord, TTVSession, TThreadImp, TTreeDrawArgsParser, TTreeFormulaManager, TTreeReader, TUnfold, TUnfoldIterativeEM, TUri, TUrl, TUsrHit, TUsrHitBuffer, TVector2, TVector3, TVectorT< Element >, TView, TVirtualFFT, TVirtualGeoConverter, TVirtualGeoPainter, TVirtualGeoTrack, TVirtualGraphPainter, TVirtualHistPainter, TVirtualMCDecayer, TVirtualMapFile, TVirtualPacketizer, TVirtualPacketizer::TVirtualSlaveStat, TVirtualPad, TVirtualPerfStats, TVirtualProofPlayer, TVirtualTreePlayer, TVirtualViewer3D, TWebPainting, TWebSnapshot, TXMLAttr, TXMLDocument, TXMLEngine, TXMLNode, TXMLParser, TXMLPlayer, and Track.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
kIsOnHeap	object is on heap
kNotDeleted	object has not been deleted
kZombie	object ctor failed
kInconsistent	class overload Hash but does call RecursiveRemove in destructor
kBitMask

Definition at line 80 of file TObject.h.

◆ anonymous enum

anonymous enum

Enumerator
kSingleKey	write collection with single key
kOverwrite	overwrite existing object with same name
kWriteDelete	write object, then delete previous key with same name

Definition at line 90 of file TObject.h.

◆ anonymous enum

anonymous enum

protected

Enumerator

kOnlyPrepStep

Used to request that the class specific implementation of TObject::Write just prepare the objects to be ready to be written but do not actually write them into the TBuffer.

This is just for example by TBufferMerger to request that the TTree inside the file calls TTree::FlushBaskets (outside of the merging lock) and TBufferMerger will later ask for the write (inside the merging lock). To take advantage of this feature the class needs to overload TObject::Write and use this enum value accordingly. (See TTree::Write and TObject::Write) Do not use, this feature will be migrate to the Merge function (See TClass and TTree::Merge)

Definition at line 97 of file TObject.h.

◆ EDeprecatedStatusBits

enum TObject::EDeprecatedStatusBits

Enumerator
kObjInCanvas	for backward compatibility only, use kMustCleanup

Definition at line 75 of file TObject.h.

◆ EStatusBits

enum TObject::EStatusBits

Enumerator
kCanDelete	if object in a list can be deleted
kMustCleanup	if object destructor must call RecursiveRemove()
kIsReferenced	if object is referenced by a TRef or TRefArray
kHasUUID	if object has a TUUID (its fUniqueID=UUIDNumber)
kCannotPick	if object in a pad cannot be picked
kNoContextMenu	if object does not want context menu
kInvalidObject	if object ctor succeeded but object should not be used

Definition at line 61 of file TObject.h.

Constructor & Destructor Documentation

◆ TObject() [1/2]

TObject::TObject ( )

inline

TObject constructor.

It sets the two data words of TObject to their initial values. The unique ID is set to 0 and the status word is set depending if the object is created on the stack or allocated on the heap. Depending on the ROOT environment variable "Root.ObjStat" (see TEnv) the object is added to the global TObjectTable for bookkeeping.

Definition at line 254 of file TObject.h.

◆ TObject() [2/2]

TObject::TObject ( const TObject & object )

inline

TObject copy ctor.

Definition at line 272 of file TObject.h.

◆ ~TObject()

TObject::~TObject ( )

virtual

TObject destructor.

Removes object from all canvases and object browsers if observer bit is on and remove from the global object table.

Definition at line 176 of file TObject.cxx.

Member Function Documentation

◆ AbstractMethod()

void TObject::AbstractMethod ( const char * method ) const

Use this method to implement an "abstract" method that you don't want to leave purely abstract.

Definition at line 1047 of file TObject.cxx.

◆ AddToTObjectTable()

void TObject::AddToTObjectTable ( TObject * op )

staticprivate

Private helper function which will dispatch to TObjectTable::AddObj.

Included here to avoid circular dependency between header files.

Definition at line 193 of file TObject.cxx.

◆ AppendPad()

void TObject::AppendPad ( Option_t * option = "" )

virtual

Append graphics object to current pad.

In case no current pad is set yet, create a default canvas with the name "c1".

Definition at line 202 of file TObject.cxx.

◆ Browse()

void TObject::Browse ( TBrowser * b )

virtual

Browse object. May be overridden for another default action.

Reimplemented in TASImage, TRecorder, TEfficiency, TGraph2D, TChain, TTree, TDirectory, TFolder, TMacro, TRemoteObject, TROOT, TStyle, TSystemDirectory, TSystemFile, TTask, TCollection, TPair, TBrowserObject, TBaseClass, TClass, TGeoManager, TGeoNode, TGeoVolume, TGeoOverlap, TGeoTrack, TCanvas, TPad, TAxis3D, TGeometry, TNode, TRootIconList, THbookBranch, THbookFile, THbookKey, TF1, TGraph, TH1, THnBase, ROOT::Internal::THnBaseBrowsable, THStack, TMultiDimFit, TMultiGraph, TPrincipal, TDirectoryFile, TKey, TKeyMapFile, TMapFile, TSPlot, TDatabasePDG, TGenerator, TParticleClassPDG, TApplicationRemote, TProof, TProofChain, RooPlot, TBranch, TVirtualBranchBrowsable, TCollectionPropertyBrowsable, TBranchClones, TBranchElement, TBranchObject, TBranchSTL, TLeaf, TNtuple, TNtupleD, TTreePerfStats, ROOT::Experimental::XRooFit::xRooNode, and TQueryResult.

Definition at line 216 of file TObject.cxx.

◆ CheckedHash()

ULong_t TObject::CheckedHash ( )

inline

Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

The intent is for this routine to be called instead of directly calling the function Hash during "insert" operations. See TObject::HasInconsistenTObjectHash();

(*) The setup is consistent when all classes in the class hierarchy that overload TObject::Hash do call ROOT::CallRecursiveRemoveIfNeeded in their destructor. i.e. it is safe to call the Hash virtual function during the RecursiveRemove operation.

Definition at line 324 of file TObject.h.

◆ Class()

static TClass * TObject::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TObject::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TObject::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 243 of file TObject.h.

◆ ClassName()

const char * TObject::ClassName ( ) const

virtual

Returns name of class to which the object belongs.

Definition at line 225 of file TObject.cxx.

◆ Clear()

virtual void TObject::Clear ( Option_t * = "" )

inlinevirtual

Reimplemented in TMVA::ResultsClassification, TMVA::ResultsMulticlass, TMVA::ResultsRegression, TMVA::ResultsClassification, TMVA::ResultsMulticlass, TMVA::ResultsRegression, TMrbSubevent_Caen, TNotifyLinkBase, TRefTable, ROOT::TSchemaRule, TGTextEdit, TGTextView, TGView, TGHtml, TStreamerInfo, TMatrixT< Element >, TMatrixT< AReal >, TMatrixT< Double_t >, TMatrixTSparse< Element >, TMatrixTSparse< Double_t >, TMatrixTSym< Element >, TMatrixTSym< Double_t >, TVectorT< Element >, TVectorT< Double_t >, TVirtualStreamerInfo, TMVA::MinuitWrapper, TProofProgressLog, TProofProgressMemoryPlot, RooLinkedList, TUsrHitBuffer, TFumili, TListOfEnums, TListOfEnumsWithLock, TDirectory, TFolder, TNamed, TProcessID, TTask, TBits, TBtree, TClonesArray, THashList, THashTable, TList, TMap, TObjArray, TOrdCollection, TRefArray, TDictAttributeMap, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TGeoRotation, TGeoCombiTrans, TGeoGenTrans, TGeoHMatrix, TCanvas, TPad, TLegend, TPaveText, TGTextEntry, TBackCompFitter, TFormula, TGraph2D, TMultiDimFit, TPrincipal, ROOT::v5::TFormula, TFitter, TLinearFitter, TBranchRef, TEventList, JetEvent, TVirtualPad, TCollection, TVirtualFitter, TMatrixTBase< Element >, TMatrixTBase< AReal >, and TMatrixTBase< Double_t >.

Definition at line 119 of file TObject.h.

◆ Clone()

TObject * TObject::Clone ( const char * newname = "" ) const

virtual

Make a clone of an object using the Streamer facility.

If the object derives from TNamed, this function is called by TNamed::Clone. TNamed::Clone uses the optional argument to set a new name to the newly created object.

If the object class has a DirectoryAutoAdd function, it will be called at the end of the function with the parameter gDirectory. This usually means that the object will be appended to the current ROOT directory.

Definition at line 241 of file TObject.cxx.

◆ Compare()

Int_t TObject::Compare ( const TObject * obj ) const

virtual

Compare abstract method.

Must be overridden if a class wants to be able to compare itself with other objects. Must return -1 if this is smaller than obj, 0 if objects are equal and 1 if this is larger than obj.

Reimplemented in fileDesc, TProofPerfAnalysis::TWrkInfo, TProofPerfAnalysis::TFileInfo, TEnvRec, TFileInfo, TNamed, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TUrl, TCollection, TGeoBranchArray, TGeoOverlap, TStructNode, TStructNodeProperty, TGFSFrameElement, TGLBFrameElement, TClassDocInfo, TDSetElement, TSlaveInfo, TSlave, TPerfEvent, TPacketizerAdaptive::TFileStat, TPacketizer::TFileNode, TPacketizerAdaptive::TFileNode, RooAbsArg, and RooDouble.

Definition at line 256 of file TObject.cxx.

◆ Copy()

void TObject::Copy ( TObject & object ) const

virtual

Copy this to obj.

Reimplemented in TDirectory, TFolder, TSystemDirectory, TSystemFile, TGTextEdit, TGTextView, TDirectoryFile, TFile, TArc, TArrow, TAxis, TBox, TColor, TCrown, TEllipse, TF1, TFormula, TF12, TF2, TF3, ROOT::v5::TFormula, TFrame, THelix, TAxis3D, TH1, TH1C, TH1S, TH1I, TH1L, TH1F, TH1D, TH2, TH2C, TH2S, TH2I, TH2L, TH2F, TH2D, TH3, TH3C, TH3S, TH3I, TH3L, TH3F, TH3D, TProfile, TProfile2D, TProfile3D, TLine, TMarker, TNamed, TH2Poly, TLegend, TLegendEntry, TF1Convolution, TF1NormSum, TH1K, TF1AbsComposition, TPaletteAxis, TPave, TPaveLabel, TPaveClass, TPolyLine, TPolyLine3D, TPolyMarker3D, TPolyMarker, TPieSlice, TStyle, TLatex, TMathText, TText, TWbox, and TXTRU.

Definition at line 158 of file TObject.cxx.

◆ DeclFileName()

static const char * TObject::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 243 of file TObject.h.

◆ Delete()

void TObject::Delete ( Option_t * option = "" )

virtual

Delete this object.

Typically called as a command via the interpreter. Normally use "delete" operator when object has been allocated on the heap.

Reimplemented in TDirectory, TDirectoryFile, TFile, TSystemDirectory, TSystemFile, TTreeViewer, TGItemContext, TCanvas, TGFrame, TGTextEdit, TAxis, RooLinkedList, TExMap, TObjectTable, TProtoClass, TKeySQL, TKeyXML, TQCommand, TBtree, TClonesArray, THashList, THashTable, TList, TMap, TObjArray, TOrdCollection, TRefArray, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TThread, TKey, TMVA::Results, TTree, and TCollection.

Definition at line 266 of file TObject.cxx.

◆ DistancetoPrimitive()

Int_t TObject::DistancetoPrimitive	(	Int_t	px,
		Int_t	py
	)

virtual

Computes distance from point (px,py) to the object.

This member function must be implemented for each graphics primitive. This default function returns a big number (999999).

Reimplemented in TGeoTessellated, TStyle, TGeoBBox, TGeoCompositeShape, TGeoCone, TGeoConeSeg, TGeoEltu, TGeoHalfSpace, TGeoHype, TGeoNode, TGeoParaboloid, TGeoPcon, TGeoPgon, TGeoScaledShape, TGeoShapeAssembly, TGeoSphere, TGeoTorus, TGeoTube, TGeoTubeSeg, TGeoVolume, TGeoXtru, TGeoOverlap, TGeoTrack, TGeoVGShape, TASImage, TColorWheel, TPad, TBox, TCrown, TCurlyArc, TCurlyLine, TDiamond, TEllipse, TGraphPolargram, TLine, TMarker, TPave, TPie, TPolyLine, TText, TGraphEdge, TGraphNode, TAxis3D, TBRIK, TMarker3DBox, TNode, TPCON, TPolyLine3D, TPolyMarker3D, TSPHE, TTUBE, TTUBS, TXTRU, TGL5DDataSet, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TGLViewer, TAxis, TEfficiency, TF1, TF2, TF3, TGraph, TGraph2D, TH1, THStack, TMultiGraph, TPolyMarker, TScatter, TSpline, THistPainter, TPaletteAxis, TGenerator, TParticle, TPrimary, TFileDrawMap, TTreePerfStats, TParallelCoord, TParallelCoordRange, TParallelCoordVar, TSpider, TGeoShape, TPoints3DABC, TVirtualHistPainter, TPieSlice, and TGLScenePad.

Definition at line 283 of file TObject.cxx.

◆ DoError()

void TObject::DoError	(	int	level,
		const char *	location,
		const char *	fmt,
		va_list	va
	)		const

protectedvirtual

Interface to ErrorHandler (protected).

Reimplemented in TSlaveLite, TTreeViewer, and TThread.

Definition at line 966 of file TObject.cxx.

◆ Draw()

void TObject::Draw ( Option_t * option = "" )

virtual

Default Draw method for all objects.

Reimplemented in TClassTree, RooStats::HybridPlot, ROOT::RGeoPainter, TGListTree, TGPicture, TMultiDimFit, TRatioPlot, TGraph, TGraphTime, THStack, TMultiGraph, TDSet, TProofChain, TChain, TTree, TFITSHDU, TEfficiency, RooStats::HypoTestInverterPlot, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoPoint, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoSpace, ROOT::Experimental::XRooFit::xRooNode, TGeoParallelWorld, TDirectory, TCollection, TClass, TGeoBatemanSol, TGeoNode, TGeoPhysicalNode, TGeoPolygon, TGeoShape, TGeoVolume, TGeoOverlap, TGeoPainter, TGeoTrack, TGeoVGShape, TASImage, TButton, TCanvas, TColorWheel, TPad, TArrow, TBox, TDiamond, TEllipse, TFrame, TLegend, TMarker, TPave, TPaveLabel, TPavesText, TPaveText, TPolyLine, TWbox, TGraphStruct, TEveGeoNode, TEveGeoTopNode, TGeometry, THelix, TNode, TNodeDiv, TPolyLine3D, TPolyMarker3D, TStructViewer, TStructViewerGUI, TF1, TF2, TF3, TH1, TPolyMarker, TSpline, TFile, TMatrixTBase< Element >, TMatrixTBase< AReal >, TMatrixTBase< Double_t >, TVectorT< Element >, TVectorT< Double_t >, TMultiLayerPerceptron, TGenerator, RooAbsData, RooTreeDataStore, TTreePerfStats, TParallelCoordVar, TGItemContext, TVirtualPad, TPie, TGraph2D, TGraphPolar, TGraphPolargram, TParallelCoord, TParallelCoordRange, TSpider, RooPlot, and RooStats::SamplingDistPlot.

Definition at line 292 of file TObject.cxx.

◆ DrawClass()

void TObject::DrawClass ( ) const

virtual

Draw class inheritance tree of the class to which this object belongs.

If a class B inherits from a class A, description of B is drawn on the right side of description of A. Member functions overridden by B are shown in class A with a blue line crossing-out the corresponding member function. The following picture is the class inheritance tree of class TPaveLabel:

Reimplemented in TSystemDirectory, TSystemFile, and TGFrame.

Definition at line 307 of file TObject.cxx.

◆ DrawClone()

TObject * TObject::DrawClone ( Option_t * option = "" ) const

virtual

Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1).

If pad was not selected - gPad will be used.

Reimplemented in TSystemDirectory, TSystemFile, TGFrame, TAxis, and TCanvas.

Definition at line 317 of file TObject.cxx.

◆ Dump()

void TObject::Dump ( ) const

virtual

Dump contents of object on stdout.

Using the information in the object dictionary (class TClass) each data member is interpreted. If a data member is a pointer, the pointer value is printed

The following output is the Dump of a TArrow object:

fAngle                   0           Arrow opening angle (degrees)
fArrowSize               0.2         Arrow Size
fOption.*fData
fX1                      0.1         X of 1st point
fY1                      0.15        Y of 1st point
fX2                      0.67        X of 2nd point
fY2                      0.83        Y of 2nd point
fUniqueID                0           object unique identifier
fBits                    50331648    bit field status word
fLineColor               1           line color
fLineStyle               1           line style
fLineWidth               1           line width
fFillColor               19          fill area color
fFillStyle               1001        fill area style

Reimplemented in TSystemFile, TCollection, TClass, TGFrame, and TGPack.

Definition at line 365 of file TObject.cxx.

◆ Error()

void TObject::Error	(	const char *	location,
		const char *	fmt,
			...
	)		const

virtual

Issue error message.

Use "location" to specify the method where the error occurred. Accepts standard printf formatting arguments.

Reimplemented in TFitResult.

Definition at line 1005 of file TObject.cxx.

◆ Execute() [1/2]

void TObject::Execute	(	const char *	method,
		const char *	params,
		Int_t *	error = `nullptr`
	)

virtual

Execute method on this object with the given parameter string, e.g.

"3.14,1,\"text\"".

Reimplemented in TMethodCall, TCling, TInterpreter, ROOT::R::TRInterface, and TContextMenu.

Definition at line 376 of file TObject.cxx.

◆ Execute() [2/2]

void TObject::Execute	(	TMethod *	method,
		TObjArray *	params,
		Int_t *	error = `nullptr`
	)

virtual

Execute method on this object with parameters stored in the TObjArray.

The TObjArray should contain an argv vector like:

argv[0] ... argv[n] = the list of TObjString parameters

TObjString

Collectable string class.

Definition TObjString.h:28

n

const Int_t n

Definition legend1.C:16

Reimplemented in TCling, TMethodCall, TInterpreter, ROOT::R::TRInterface, and TContextMenu.

Definition at line 394 of file TObject.cxx.

◆ ExecuteEvent()

void TObject::ExecuteEvent	(	Int_t	event,
		Int_t	px,
		Int_t	py
	)

virtual

Execute action corresponding to an event at (px,py).

This method must be overridden if an object can react to graphics events.

Reimplemented in TParallelCoord, TParallelCoordRange, TParallelCoordVar, TGeoManager, TGeoNode, TGeoShape, TGeoVolume, TGeoOverlap, TGeoTrack, TASImage, TASPaletteEditor::LimitLine, TButton, TCanvas, TGroupButton, TPad, TSliderBox, TBox, TCrown, TCurlyArc, TCurlyLine, TDiamond, TEllipse, TFrame, TGraphPolargram, TLine, TLink, TMarker, TPave, TPolyLine, TText, TWbox, TGraphEdge, TGraphNode, TAxis3D, TMarker3DBox, TNode, TPolyLine3D, TPolyMarker3D, TView3D, TGL5DDataSet, TGLEventHandler, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TGLViewer, TAxis, TEfficiency, TF1, TF2, TF3, TGraph, TGraph2D, TH1, TPolyMarker, TScatter, TSpline, THistPainter, TPaletteAxis, TGenerator, TParticle, TPrimary, TTreePerfStats, TSpider, TView, TVirtualHistPainter, TPie, and TGLScenePad.

Definition at line 410 of file TObject.cxx.

◆ Fatal()

void TObject::Fatal	(	const char *	location,
		const char *	fmt,
			...
	)		const

virtual

Issue fatal error message.

Use "location" to specify the method where the fatal error occurred. Accepts standard printf formatting arguments.

Definition at line 1033 of file TObject.cxx.

◆ FindObject() [1/2]

TObject * TObject::FindObject ( const char * name ) const

virtual

Must be redefined in derived classes.

This function is typically used with TCollections, but can also be used to find an object by name inside this object.

Reimplemented in TListOfEnums, TMap, TDirectory, TFolder, TROOT, TListOfTypes, TListOfTypes, TBtree, TCollection, THashList, THashTable, TList, TObjArray, TListOfDataMembers, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TPad, TGeometry, THbookFile, TGraph, TGraph2D, TH1, RooAbsCollection, and RooLinkedList.

Definition at line 420 of file TObject.cxx.

◆ FindObject() [2/2]

TObject * TObject::FindObject ( const TObject * obj ) const

virtual

Must be redefined in derived classes.

This function is typically used with TCollections, but can also be used to find an object inside this object.

Reimplemented in TMap, TDirectory, TFolder, TROOT, TListOfTypes, TBtree, TCollection, THashList, THashTable, TList, TObjArray, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TPad, TGeometry, THbookFile, TGraph, TGraph2D, TH1, RooAbsCollection, and RooLinkedList.

Definition at line 430 of file TObject.cxx.

◆ GetDrawOption()

Option_t * TObject::GetDrawOption ( ) const

virtual

Get option used by the graphics system to draw this object.

Note that before calling object.GetDrawOption(), you must have called object.Draw(..) before in the current pad.

Reimplemented in TBrowser, TFitEditor, TGedFrame, TGFileBrowser, TRootBrowser, and TRootBrowserLite.

Definition at line 440 of file TObject.cxx.

◆ GetDtorOnly()

Longptr_t TObject::GetDtorOnly ( )

static

Return destructor only flag.

Definition at line 1094 of file TObject.cxx.

◆ GetIconName()

const char * TObject::GetIconName ( ) const

virtual

Returns mime type name of object.

Used by the TBrowser (via TGMimeTypes class). Override for class of which you would like to have different icons for objects of the same class.

Reimplemented in TSystemFile, TGeoVolume, TASImage, TGMainFrame, TKey, ROOT::Experimental::XRooFit::xRooNode, TBranch, TVirtualBranchBrowsable, TMethodBrowsable, and TBranchElement.

Definition at line 466 of file TObject.cxx.

◆ GetName()

const char * TObject::GetName ( ) const

virtual

Returns name of object.

This default method returns the class name. Classes that give objects a name should override this method.

Reimplemented in TMVA::DataSetInfo, TMVA::FitterBase, TMVA::MethodBase, TMVA::OptionBase, TMVA::PDF, TMVA::Reader, TMVA::VariableTransformBase, TSQLClassColumnInfo, TSQLClassInfo, TSQLColumnData, TEnvRec, TNamed, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TQCommand, TQConnection, TQSlot, TCollection, TPair, TRealData, TGeoDecayChannel, TGeoShape, TVirtualGeoTrack, TGeoVGShape, TPad, TGaxis, TPave, TEveGeoNode, TPolyMarker3D, TGLEmbeddedViewer, TGLPShapeObj, TGLSAViewer, TStructNode, TGMenuEntry, TGMenuTitle, TGPicture, TGWindow, TIconBoxThumb, TQueryDescription, TSessionDescription, TPackageDescription, TSessionServerFrame, TDocDirective, TClassDocInfo, THtml::TFileSysEntry, TArchiveMember, TMapFile, TXMLAttr, TStatistic, TParticle, TPrimary, TLockPath, TPackMgr, TSlaveInfo, TProofNodeInfo, TSlave, TVirtualPacketizer::TVirtualSlaveStat, TProofBenchRunCPU, TProofBenchRunDataRead, TPBReadType, TPBHistType, TPBHandleDSType, TDrawFeedback, TOutputListSelectorDataMap, TStatsFeedback, TPacketizer::TFileNode, TPacketizerAdaptive::TFileNode, TPacketizerFile::TIterObj, RooAbsCollection, RooCatType, RooLinkedList, TTreePerfStats, TTVRecord, TTVSession, and TVirtualPad.

Definition at line 456 of file TObject.cxx.

◆ GetObjectInfo()

char * TObject::GetObjectInfo	(	Int_t	px,
		Int_t	py
	)		const

virtual

Returns string containing info about the object at position (px,py).

This method is typically overridden by classes of which the objects can report peculiarities for different positions. Returned string will be re-used (lock in MT environment).

Reimplemented in TGeoNode, TGeoVolume, TGeoTrack, TASImage, TColorWheel, TAxis3D, TNode, TGL5DDataSet, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TF1, TF2, TGraph, TH1, THistPainter, TPaletteAxis, TFileDrawMap, TParallelCoordVar, and TVirtualHistPainter.

Definition at line 485 of file TObject.cxx.

◆ GetObjectStat()

Bool_t TObject::GetObjectStat ( )

static

Get status of object stat flag.

Definition at line 1079 of file TObject.cxx.

◆ GetOption()

virtual Option_t * TObject::GetOption ( ) const

inlinevirtual

Reimplemented in TGeoVolume, TArrow, TGaxis, TLegendEntry, TPave, TPolyLine, TAxis3D, THelix, TNode, TPolyLine3D, TPolyMarker3D, TH1, TPolyMarker, TFile, TMapFile, TPSocket, TSocket, TUDPSocket, TSelector, and TPoints3DABC.

Definition at line 139 of file TObject.h.

◆ GetTitle()

const char * TObject::GetTitle ( ) const

virtual

Returns title of object.

This default method returns the class title (i.e. description). Classes that give objects a title should override this method.

Reimplemented in TNamed, TQCommand, TPair, TClassMenuItem, TBaseClass, TASImage, TPad, TGaxis, TPaveLabel, TEveGeoNode, TEvePointSet, TGTextButton, TGGroupFrame, TGLabel, TGTextLBEntry, TGLVEntry, TGTextEntry, TRootIconList, TAxis, TKey, TMapFile, TParticle, TPrimary, TPackMgr, Axis2, TParallelCoordSelect, and TVirtualPad.

Definition at line 500 of file TObject.cxx.

◆ GetUniqueID()

UInt_t TObject::GetUniqueID ( ) const

virtual

Return the unique object id.

Definition at line 474 of file TObject.cxx.

◆ HandleTimer()

Bool_t TObject::HandleTimer ( TTimer * timer )

virtual

Execute action in response of a timer timing out.

This method must be overridden if an object has to react to timers.

Reimplemented in TGWindow, TGuiBldDragManager, TSessionViewer, TGraphTime, TGLEventHandler, TGCommandPlugin, TGDNDManager, TGFileContainer, TGPopupMenu, TGScrollBar, TGShutter, TGTextEdit, TGTextEditor, TGTextEntry, TGTextView, TGToolTip, TGHtml, TVirtualPacketizer, TProofPlayerRemote, TProofPlayerSlave, TProofPlayerSuperMaster, TProofPlayerLite, and TTreeViewer.

Definition at line 510 of file TObject.cxx.

◆ Hash()

ULong_t TObject::Hash ( ) const

virtual

Return hash value for this object.

Note: If this routine is overloaded in a derived class, this derived class should also add

ROOT::CallRecursiveRemoveIfNeeded(*this)

ROOT::CallRecursiveRemoveIfNeeded

void CallRecursiveRemoveIfNeeded(TObject &obj)

call RecursiveRemove for obj if gROOT is valid and obj.TestBit(kMustCleanup) is true.

Definition TROOT.h:395

Otherwise, when RecursiveRemove is called (by ~TObject or example) for this type of object, the transversal of THashList and THashTable containers will will have to be done without call Hash (and hence be linear rather than logarithmic complexity). You will also see warnings like

Error in <ROOT::Internal::TCheckHashRecursiveRemoveConsistency::CheckRecursiveRemove>: The class SomeName overrides TObject::Hash but does not call TROOT::RecursiveRemove in its destructor.

TObject

Mother of all ROOT objects.

Definition TObject.h:41

TObject::Error

virtual void Error(const char *method, const char *msgfmt,...) const

Issue error message.

Definition TObject.cxx:1005

TObject::Hash

virtual ULong_t Hash() const

Return hash value for this object.

Definition TObject.cxx:532

TROOT::RecursiveRemove

void RecursiveRemove(TObject *obj) override

Recursively remove this object from the list of Cleanups.

Definition TROOT.cxx:2498

Reimplemented in TEnvRec, TNamed, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TCollection, TPair, TASImagePlugin, TASPluginGS, TPad, TImagePlugin, TPave, TGObject, TGPicture, TIconBoxThumb, TClassDocInfo, THtml::TFileSysEntry, TStatistic, TDrawFeedback, TStatsFeedback, and RooLinkedList.

Definition at line 532 of file TObject.cxx.

◆ HasInconsistentHash()

Bool_t TObject::HasInconsistentHash ( ) const

inline

Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

missing call to RecursiveRemove in destructor).

Note: Since the consistency is only tested for during inserts, this routine will return true for object that have never been inserted whether or not they have a consistent setup. This has no negative side-effect as searching for the object with the right or wrong Hash will always yield a not-found answer (Since anyway no hash can be guaranteed unique, there is always a check)

Definition at line 358 of file TObject.h.

◆ Info()

void TObject::Info	(	const char *	location,
		const char *	fmt,
			...
	)		const

virtual

Issue info message.

Use "location" to specify the method where the warning occurred. Accepts standard printf formatting arguments.

Definition at line 979 of file TObject.cxx.

◆ InheritsFrom() [1/2]

Bool_t TObject::InheritsFrom ( const char * classname ) const

virtual

Returns kTRUE if object inherits from class "classname".

Reimplemented in TClass.

Definition at line 542 of file TObject.cxx.

◆ InheritsFrom() [2/2]

Bool_t TObject::InheritsFrom ( const TClass * cl ) const

virtual

Returns kTRUE if object inherits from TClass cl.

Reimplemented in TClass.

Definition at line 550 of file TObject.cxx.

◆ Inspect()

void TObject::Inspect ( ) const

virtual

Dump contents of this object in a graphics canvas.

Same action as Dump but in a graphical form. In addition pointers to other objects can be followed.

The following picture is the Inspect of a histogram object:

Reimplemented in TSystemFile, TInspectorObject, TGFrame, and ROOT::Experimental::XRooFit::xRooNode.

Definition at line 563 of file TObject.cxx.

◆ InvertBit()

void TObject::InvertBit ( UInt_t f )

inline

Definition at line 201 of file TObject.h.

◆ IsA()

virtual TClass * TObject::IsA ( ) const

inlinevirtual

Returns: TClass describing current object

Definition at line 243 of file TObject.h.

◆ IsDestructed()

Bool_t TObject::IsDestructed ( ) const

inline

IsDestructed.

Note: This function must be non-virtual as it can be used on destructed (but not yet modified) memory. This is used for example in TClonesArray to record the element that have been destructed but not deleted and thus are ready for re-use (by operator new with placement).

Returns: true if this object's destructor has been run.

Definition at line 178 of file TObject.h.

◆ IsEqual()

Bool_t TObject::IsEqual ( const TObject * obj ) const

virtual

Default equal comparison (objects are equal if they have the same address in memory).

More complicated classes might want to override this function.

Reimplemented in TObjString, TQCommand, TPair, TGObject, and TSlaveInfo.

Definition at line 582 of file TObject.cxx.

◆ IsFolder()

Bool_t TObject::IsFolder ( ) const

virtual

Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

Reimplemented in TDirectory, TFolder, TRemoteObject, TROOT, TSystemDirectory, TTask, TCollection, TPair, TBrowserObject, TBaseClass, TClass, TGeoManager, TGeoNode, TGeoNodeMatrix, TGeoVolume, TGeoOverlap, TGeoTrack, TCanvas, TPad, TAxis3D, TGeometry, TNode, TRootIconList, THbookFile, THbookKey, THnBase, ROOT::Internal::THnBaseBrowsable, TMultiDimFit, TPrincipal, TKey, TMapFile, TSPlot, TDatabasePDG, TParticleClassPDG, TApplicationRemote, TProof, ROOT::Experimental::XRooFit::xRooNode, TBranch, TVirtualBranchBrowsable, TBranchClones, TBranchElement, TBranchObject, TBranchSTL, and TTree.

Definition at line 572 of file TObject.cxx.

◆ IsOnHeap()

R__ALWAYS_INLINE Bool_t TObject::IsOnHeap ( ) const

inline

Definition at line 152 of file TObject.h.

◆ IsSortable()

virtual Bool_t TObject::IsSortable ( ) const

inlinevirtual

Reimplemented in TFileInfo, TNamed, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TUri, TUrl, TCollection, TGeoBranchArray, TGeoOverlap, TPave, TStructNode, TStructNodeProperty, TGFSFrameElement, TGLBFrameElement, TClassDocInfo, TDSetElement, TSlaveInfo, TSlave, TPerfEvent, TPacketizer::TFileNode, TPacketizerAdaptive::TFileStat, TPacketizerAdaptive::TFileNode, RooAbsArg, and RooDouble.

Definition at line 150 of file TObject.h.

◆ IsZombie()

R__ALWAYS_INLINE Bool_t TObject::IsZombie ( ) const

inline

Definition at line 153 of file TObject.h.

◆ ls()

void TObject::ls ( Option_t * option = "" ) const

virtual

The ls function lists the contents of a class on stdout.

Ls output is typically much less verbose then Dump().

Reimplemented in THbookFile, ROOT::Experimental::XRooFit::xRooBrowser, TParameter< AParamType >, TParameter< Long64_t >, TFree, TVirtualStreamerInfo, TFTP, TQSlot, TClass, TStatistic, TApplication, TColor, TDirectory, TFolder, TNamed, TQCommand, TQUndoManager, TQConnection, TROOT, TQConnectionList, TCollection, TFunction, ROOT::TSchemaRule, ROOT::Detail::TSchemaRuleSet, TStreamerElement, TStreamerBase, TStreamerSTL, TGeoNode, TAnnotation, TCanvas, TClassTree, TPad, TBox, TEllipse, TImage, TLine, TMarker, TPave, TPolyLine, TText, TPolyLine3D, TPolyMarker3D, TGLayoutHints, TGFrameElement, THStack, TPolyMarker, TDirectoryFile, TFile, TKey, TMapFile, TStreamerInfo, TProofOutputList, TChain, TChainElement, TFriendElement, TVirtualPad, TTask, TNode, and TGeometry.

Definition at line 591 of file TObject.cxx.

◆ MakeZombie()

void TObject::MakeZombie ( )

inlineprotected

Definition at line 53 of file TObject.h.

◆ MayNotUse()

void TObject::MayNotUse ( const char * method ) const

Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).

Definition at line 1058 of file TObject.cxx.

◆ Notify()

Bool_t TObject::Notify ( )

virtual

This method must be overridden to handle object notification (the base implementation is no-op).

Different objects in ROOT use the Notify method for different purposes, in coordination with other objects that call this method at the appropriate time.

For example, TLeaf uses it to load class information; TBranchRef to load contents of referenced branches TBranchRef; most notably, based on Notify, TChain implements a callback mechanism to inform interested parties when it switches to a new sub-tree.

Reimplemented in TSelEvent, TMessageHandler, TNotifyLink< Type >, TNotifyLink< RNoCleanupNotifierHelper >, TNotifyLink< ROOT::Detail::TBranchProxy >, TNotifyLink< TTreeReader >, TFileHandler, TSignalHandler, TStdExceptionHandler, TProcessEventTimer, TTimer, TIdleTimer, TSingleShotCleaner, TCollection, TRefTable, TBrowserTimer, TInterruptHandler, TTermInputHandler, TThreadTimer, TGLRedrawTimer, TViewTimer, TGContainerKeyboardTimer, TGContainerScrollTimer, TGInputHandler, TViewUpdateTimer, TPopupDelayTimer, TRepeatTimer, TSBRepeatTimer, TGTextEditHist, TInsCharCom, TDelCharCom, TBreakLineCom, TInsTextCom, TDelTextCom, TBlinkTimer, TTipDelayTimer, TGuiBldDragManagerRepeatTimer, TARInterruptHandler, TASLogHandler, TASInterruptHandler, TASSigPipeHandler, TASInputHandler, TSocketHandler, TTimeOutTimer, TProofInterruptHandler, TProofInputHandler, TProofServLogHandler, TShutdownTimer, TReaperTimer, TIdleTOTimer, TSelVerifyDataSet, TProofServTerminationHandler, TProofServInterruptHandler, TProofServSigPipeHandler, TProofServInputHandler, TProofServLiteInterruptHandler, TProofServLiteSigPipeHandler, TProofServLiteTerminationHandler, TProofServLiteSegViolationHandler, TProofServLiteInputHandler, TSelEventGen, TSelHandleDataSet, TProofDraw, TDispatchTimer, TProctimeTimer, TStopTimer, TBranchElement, TBranchRef, TLeafObject, TSelector, TTree, TSelectorDraw, TSelectorEntries, TTreeFormula, TTreeFormulaManager, TTreeReader, h1analysis, h1analysisTreeReader, and TSysEvtHandler.

Definition at line 611 of file TObject.cxx.

◆ Obsolete()

void TObject::Obsolete	(	const char *	method,
		const char *	asOfVers,
		const char *	removedFromVers
	)		const

Use this method to declare a method obsolete.

Specify as of which version the method is obsolete and as from which version it will be removed.

Definition at line 1067 of file TObject.cxx.

◆ operator delete() [1/2]

void TObject::operator delete ( void * ptr )

Operator delete.

Definition at line 1110 of file TObject.cxx.

◆ operator delete() [2/2]

void TObject::operator delete	(	void *	ptr,
		void *	vp
	)

Only called by placement new when throwing an exception.

Definition at line 1166 of file TObject.cxx.

◆ operator delete[]() [1/2]

void TObject::operator delete[] ( void * ptr )

Operator delete [].

Definition at line 1121 of file TObject.cxx.

◆ operator delete[]() [2/2]

void TObject::operator delete[]	(	void *	ptr,
		void *	vp
	)

Only called by placement new[] when throwing an exception.

Definition at line 1174 of file TObject.cxx.

◆ operator new() [1/2]

void * TObject::operator new ( size_t sz )

inline

Definition at line 181 of file TObject.h.

◆ operator new() [2/2]

void * TObject::operator new	(	size_t	sz,
		void *	vp
	)

inline

Definition at line 183 of file TObject.h.

◆ operator new[]() [1/2]

void * TObject::operator new[] ( size_t sz )

inline

Definition at line 182 of file TObject.h.

◆ operator new[]() [2/2]

void * TObject::operator new[]	(	size_t	sz,
		void *	vp
	)

inline

Definition at line 184 of file TObject.h.

◆ operator=()

TObject & TObject::operator= ( const TObject & rhs )

inline

TObject assignment operator.

Definition at line 296 of file TObject.h.

◆ Paint()

void TObject::Paint ( Option_t * option = "" )

virtual

This method must be overridden if a class wants to paint itself.

The difference between Paint() and Draw() is that when a object draws itself it is added to the display list of the pad in which it is drawn (and automatically redrawn whenever the pad is redrawn). While paint just draws the object without adding it to the pad display list.

Reimplemented in TPie, TSQLFile, TXMLFile, ROOT::RGeoPainter, TGaxis, TGraph, TGraphTime, THStack, TMultiGraph, TScatter, TTreePerfStats, TEfficiency, TRatioPlot, TGeoBoolNode, TGeoUnion, TGeoIntersection, TGeoSubtraction, TMarker3DBox, TGL5DDataSet, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TGraph2DPainter, TSpectrum2Painter, TFileDrawMap, TDirectory, TExec, TMacro, TStyle, TBits, TCollection, TGeoNode, TGeoPhysicalNode, TGeoShape, TGeoVolume, TGeoOverlap, TGeoPainter, TGeoTrack, TGeoVGShape, TASImage, TASPaletteEditor::PaintPalette, TASPaletteEditor::LimitLine, TAnnotation, TButton, TCanvas, TClassTree, TColorWheel, TPad, TArrow, TBox, TCrown, TDiamond, TEllipse, TFrame, TLatex, TLegend, TLine, TMarker, TMathText, TPave, TPaveLabel, TPaveStats, TPavesText, TPaveText, TPolyLine, TText, TWbox, TGraphEdge, TGraphNode, TEveArrow, TEveCaloViz, TEveDigitSet, TEveGeoTopNode, TEveGeoShape, TEvePlot3D, TEvePointSet, TEveProjectionAxes, TEveScene, TEveShape, TEveStraightLineSet, TEveText, TEveTriangleSet, TAxis3D, TNode, TNodeDiv, TPolyLine3D, TPolyMarker3D, TShape, TF1, TF2, TF3, TGraph2D, TH1, TPolyMarker, TSpline, THistPainter, TPaletteAxis, TFile, TGenerator, TParticle, TPrimary, TParallelCoordVar, TVirtualPad, TVirtualGeoPainter, TVirtualGeoTrack, TVirtualHistPainter, TParallelCoordRange, TSpider, TGraphPolargram, and TParallelCoord.

Definition at line 624 of file TObject.cxx.

◆ Pop()

void TObject::Pop ( )

virtual

Pop on object drawn in a pad to the top of the display list.

I.e. it will be drawn last and on top of all other primitives.

Reimplemented in TPad, TFrame, and TVirtualPad.

Definition at line 633 of file TObject.cxx.

◆ Print()

void TObject::Print ( Option_t * option = "" ) const

virtual

This method must be overridden when a class wants to print itself.

Reimplemented in RooCmdArg, TPad, TVirtualPad, RooLinkedList, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TRootBrowserHistoryCursor, TRolke, TPacketizer::TFileNode, TMVA::TNeuron, TSQLFile, TXMLFile, TGTextEdit, TStreamerInfoActions::TActionSequence, TStatistic, TGridCollection, TProofPerfAnalysis::TWrkInfo, TProofPerfAnalysis::TWrkEntry, TBranchSTL, TPacketizerAdaptive::TFileStat, TPacketizerAdaptive::TFileNode, TGraph, TGraph2D, TGraph2DAsymmErrors, TGraph2DErrors, TGraphAsymmErrors, TGraphBentErrors, TGraphErrors, TGraphMultiErrors, THStack, TMultiGraph, TScatter, TBenchmark, TMatrixTBase< Element >, TMatrixTBase< AReal >, TMatrixTBase< Double_t >, TGeoDecayChannel, TPluginHandler, TPluginManager, TQSlot, TDecompBase, TDecompBK, TDecompChol, TDecompLU, TDecompQRH, TDecompSparse, TDecompSVD, TQpDataDens, TQpDataSparse, TDatabasePDG, TParticleClassPDG, TParticlePDG, TFTP, TProofDesc, TProofPerfAnalysis::TPackInfo, TProofPerfAnalysis::TWrkInfoFile, TProofPerfAnalysis::TFileInfo, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoPoint, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoSpace, ROOT::Experimental::XRooFit::xRooNode, TQueryResult, TPrincipal, TProofLog, TProofLogElem, TMVA::PDEFoamCell, TMVA::PDEFoamVect, TFoamCell, TFoamVect, TNetFile, TMVA::Event, TMVA::OptionBase, TMVA::Option< T >, TColor, TDirectory, TEnv, TFileCollection, TInetAddress, TMacro, TMessageHandler, TNamed, TStopwatch, TUri, TUrl, TBits, TClassTable, TCollection, THashTable, TObjectTable, TFunction, TGDMLMatrix, TGeoBranchArray, TGeoElement, TGeoIsotope, TGeoElementRN, TGeoBatemanSol, TGeoElementTable, TGeoMatrix, TGeoOpticalSurface, TGeoSkinSurface, TGeoBorderSurface, TGeoPhysicalNode, TGeoRegion, TGeoTessellated, TGeoVolume, TGeoVoxelFinder, TGeoOverlap, TGeoTrack, TAnnotation, TBox, TEllipse, TLegend, TLegendEntry, TLine, TMarker, TPave, TPaveText, TPolyLine, TText, TEveTrans, ROOT::Experimental::REveTrans, THelix, TPolyLine3D, TPolyMarker3D, TXTRU, TGFont, TGFontPool, TGFrame, TGCompositeFrame, TGGC, TGGCPool, TGLayoutHints, TGFrameElement, TGMimeTypes, TGPicture, TGPicturePool, TGWindow, THbookTree, TF1, TFitResult, TFormula, TH1, THnBase, TPolyMarker, ROOT::v5::TFormula, TSpectrum, TSpectrum2, TSpectrum3, TFile, TFileCacheRead, TFileCacheWrite, TKey, TMapFile, TMemFile, TZIPFile, TZIPMember, TSQLStructure, TVectorT< Element >, TVectorT< Double_t >, TLorentzVector, TQuaternion, TVector2, TVector3, TQpVar, TAttParticle, TParticle, TPrimary, THostAuth, TApplicationRemote, TNetFileStager, TSQLColumnInfo, TSQLTableInfo, TCondorSlave, TCondor, TDSet, TSlaveInfo, TProof, TProofLite, TProofOutputFile, TProofOutputList, TProofProgressStatus, TProofServ, TSlave, TSlaveLite, TProofBenchRunCPU, TProofBenchRunDataRead, TProofNodes, TSelEventGen, TPerfEvent, TStatus, TPacketizerFile::TIterObj, RooStats::ModelConfig, TBranch, TBranchClones, TBranchElement, TBranchObject, TBranchRef, TChain, TEventList, TTree, TTreeCache, TTreeCacheUnzip, TTreeIndex, TTreePerfStats, TParallelCoordVar, TProofBenchRun, TRootSecContext, TSecContext, TMultiDimFit, TParallelCoordRange, TFileInfo, TFileInfoMeta, TDSetElement, Roo1DTable, RooAbsArg, RooAbsBinning, RooAbsCollection, RooAbsData, RooAbsDataStore, RooAbsGenContext, RooCurve, RooEllipse, RooCatType, RooFitResult, RooGenFitStudy, RooHist, RooMsgService, RooNumGenConfig, RooNumIntConfig, RooPlot, RooFormula, RooSharedProperties, and RooWorkspace.

Definition at line 654 of file TObject.cxx.

◆ Read()

Int_t TObject::Read ( const char * name )

virtual

Read contents of object with specified name from the current directory.

First the key with the given name is searched in the current directory, next the key buffer is deserialized into the object. The object must have been created before via the default constructor. See TObject::Write().

Reimplemented in TKeyXML, TBuffer, TKey, and TKeySQL.

Definition at line 666 of file TObject.cxx.

◆ RecursiveRemove()

void TObject::RecursiveRemove ( TObject * obj )

virtual

Recursively remove this object from a list.

Typically implemented by classes that can contain multiple references to a same object.

Reimplemented in THistPainter, TCling, TDirectory, TFolder, TProcessID, TROOT, TCollection, THashList, TList, TObjArray, TBrowser, TObjectSpy, TObjectRefSpy, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, ROOT::Internal::TCheckHashRecursiveRemoveConsistency, TViewPubDataMembers, TViewPubFunctions, TDialogCanvas, TInspectCanvas, TPad, TLegend, TGeometry, TNode, ROOT::RBrowserDataCleanup, TFitEditor, TGedEditor, TH1Editor, TH2Editor, TGFileBrowser, TRootBrowser, TRootBrowserLite, TRootContextMenu, TRootBrowserHistory, TGraph, TH1, THStack, TMultiGraph, TFileMerger, RooAbsCollection, RooAbsData, RooLinkedList, RooMCStudy, RooWorkspace, TChain, TFriendElement, TTree, TTreePlayer, and TVirtualPad.

Definition at line 677 of file TObject.cxx.

◆ ResetBit()

void TObject::ResetBit ( UInt_t f )

inline

Definition at line 198 of file TObject.h.

◆ SaveAs()

void TObject::SaveAs	(	const char *	filename = `""`,
		Option_t *	option = `""`
	)		const

virtual

Save this object in the file specified by filename.

if "filename" contains ".root" the object is saved in filename as root binary file.
if "filename" contains ".xml" the object is saved in filename as a xml ascii file.
if "filename" contains ".cc" the object is saved in filename as C code independant from ROOT. The code is generated via SavePrimitive(). Specific code should be implemented in each object to handle this option. Like in TF1::SavePrimitive().
otherwise the object is written to filename as a CINT/C++ script. The C++ code to rebuild this object is generated via SavePrimitive(). The "option" parameter is passed to SavePrimitive. By default it is an empty string. It can be used to specify the Draw option in the code generated by SavePrimitive.

The function is available via the object context menu.

Reimplemented in TSpline, TFolder, TGeoVolume, TClassTree, TPad, TPaveClass, TGObject, TSpline3, TSpline5, ROOT::Experimental::XRooFit::xRooNode, TTreePerfStats, TVirtualPad, TGraph, and TH1.

Definition at line 704 of file TObject.cxx.

◆ SavePrimitive()

void TObject::SavePrimitive	(	std::ostream &	out,
		Option_t *	option = `""`
	)

virtual

Save a primitive as a C++ statement(s) on output stream "out".

Reimplemented in TGeoTessellated, TGraphEdge, TGraphNode, TGeoIdentity, TStyle, TCurlyArc, TCurlyLine, TGedMarkerSelect, TGedPatternSelect, TGColorSelect, TGFont, TGVerticalLayout, TGHorizontalLayout, TGRowLayout, TGColumnLayout, TGMatrixLayout, TGTileLayout, TGListLayout, TGListDetailsLayout, TGTextLBEntry, TGNumberEntryField, TGNumberEntry, TGTableLayoutHints, TGTableLayout, TGTextEdit, TGTextView, TGXYLayoutHints, TGXYLayout, TRootContainer, TGHtml, TEfficiency, TExec, TMacro, TGeoArb8, TGeoTrap, TGeoGtra, TGeoBBox, TGeoBoolNode, TGeoUnion, TGeoIntersection, TGeoSubtraction, TGeoCompositeShape, TGeoCone, TGeoConeSeg, TGeoElementRN, TGeoDecayChannel, TGeoEltu, TGeoHalfSpace, TGeoHype, TGeoMaterial, TGeoMixture, TGeoTranslation, TGeoRotation, TGeoCombiTrans, TGeoHMatrix, TGeoMedium, TGeoPara, TGeoParaboloid, TGeoPatternX, TGeoPatternY, TGeoPatternZ, TGeoPatternParaX, TGeoPatternParaY, TGeoPatternParaZ, TGeoPatternTrapZ, TGeoPatternCylR, TGeoPatternCylPhi, TGeoPatternSphR, TGeoPatternSphTheta, TGeoPatternSphPhi, TGeoPcon, TGeoPgon, TGeoScaledShape, TGeoShapeAssembly, TGeoSphere, TGeoTorus, TGeoTrd1, TGeoTrd2, TGeoTube, TGeoTubeSeg, TGeoCtub, TGeoVolume, TGeoXtru, TASImage, TButton, TCanvas, TGroupButton, TPad, TPaveClass, TSlider, TSliderBox, TArc, TArrow, TBox, TCrown, TCutG, TDiamond, TEllipse, TFrame, TGaxis, TLatex, TLegend, TLine, TMarker, TMathText, TPave, TPaveLabel, TPaveStats, TPavesText, TPaveText, TPolyLine, TText, TWbox, TGraphStruct, TAxis3D, THelix, TMarker3DBox, TPolyLine3D, TPolyMarker3D, TGHorizontal3DLine, TGVertical3DLine, TGButton, TGTextButton, TGPictureButton, TGCheckButton, TGRadioButton, TGButtonGroup, TGVButtonGroup, TGHButtonGroup, TGContainer, TGCanvas, TGComboBox, TGLineStyleComboBox, TGLineWidthComboBox, TGDockableFrame, TGDoubleVSlider, TGDoubleHSlider, TGFrame, TGCompositeFrame, TGVerticalFrame, TGHorizontalFrame, TGMainFrame, TGTransientFrame, TGGroupFrame, TGFSComboBox, TGFileContainer, TGGC, TGIcon, TGLabel, TGLayoutHints, TGListBox, TGListTree, TGListView, TGLVContainer, TGMdiFrame, TGMdiMainFrame, TGMdiMenuBar, TGPopupMenu, TGMenuTitle, TGMenuBar, TGProgressBar, TGHProgressBar, TGVProgressBar, TGHScrollBar, TGVScrollBar, TGShapedFrame, TGShutterItem, TGShutter, TGVSlider, TGHSlider, TGSplitFrame, TGVSplitter, TGHSplitter, TGVFileSplitter, TGStatusBar, TGTabLayout, TGTab, TGTextEntry, TGToolBar, TGTripleVSlider, TGTripleHSlider, TRootEmbeddedCanvas, TF1, TF12, TF2, TF3, TGraph, TGraph2D, TGraphAsymmErrors, TGraphBentErrors, TGraphErrors, TGraphMultiErrors, TH1, TH1K, TH2Poly, THStack, TMultiGraph, TPolyMarker, TProfile, TProfile2D, TProfile3D, TScatter, TSpline3, TSpline5, TPaletteAxis, TChain, TTreePerfStats, TParallelCoord, TParallelCoordVar, TPie, and TPieSlice.

Definition at line 769 of file TObject.cxx.

◆ SetBit() [1/2]

void TObject::SetBit ( UInt_t f )

inline

Definition at line 197 of file TObject.h.

◆ SetBit() [2/2]

void TObject::SetBit	(	UInt_t	f,
		Bool_t	set
	)

Set or unset the user status bits as specified in f.

Definition at line 798 of file TObject.cxx.

◆ SetDrawOption()

void TObject::SetDrawOption ( Option_t * option = "" )

virtual

Set drawing option for object.

This option only affects the drawing style and is stored in the option field of the TObjOptLink supporting a TPad's primitive list (TList). Note that it does not make sense to call object.SetDrawOption(option) before having called object.Draw().

Reimplemented in TSystemDirectory, TSystemFile, TPad, TGFrame, TAxis, TBrowser, TPaveStats, TGedFrame, TRootBrowserLite, and RooPlot.

Definition at line 782 of file TObject.cxx.

◆ SetDtorOnly()

void TObject::SetDtorOnly ( void * obj )

static

Set destructor only flag.

Definition at line 1102 of file TObject.cxx.

◆ SetObjectStat()

void TObject::SetObjectStat ( Bool_t stat )

static

Turn on/off tracking of objects in the TObjectTable.

Definition at line 1086 of file TObject.cxx.

◆ SetUniqueID()

void TObject::SetUniqueID ( UInt_t uid )

virtual

Set the unique object id.

Definition at line 809 of file TObject.cxx.

◆ Streamer()

void TObject::Streamer ( TBuffer & R__b )

virtual

Stream an object of class TObject.

Definition at line 906 of file TObject.cxx.

◆ StreamerNVirtual()

void TObject::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 243 of file TObject.h.

◆ SysError()

void TObject::SysError	(	const char *	location,
		const char *	fmt,
			...
	)		const

virtual

Issue system error message.

Use "location" to specify the method where the system error occurred. Accepts standard printf formatting arguments.

Definition at line 1019 of file TObject.cxx.

◆ TestBit()

R__ALWAYS_INLINE Bool_t TObject::TestBit ( UInt_t f ) const

inline

Definition at line 199 of file TObject.h.

◆ TestBits()

Int_t TObject::TestBits ( UInt_t f ) const

inline

Definition at line 200 of file TObject.h.

◆ UseCurrentStyle()

void TObject::UseCurrentStyle ( )

virtual

Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

Reimplemented in TCanvas, TPad, TFrame, TPaveStats, TPaveText, TAxis3D, TGraph, TH1, and TTree.

Definition at line 819 of file TObject.cxx.

◆ Warning()

void TObject::Warning	(	const char *	location,
		const char *	fmt,
			...
	)		const

virtual

Issue warning message.

Use "location" to specify the method where the warning occurred. Accepts standard printf formatting arguments.

Definition at line 991 of file TObject.cxx.

◆ Write() [1/2]

Int_t TObject::Write	(	const char *	name = `nullptr`,
		Int_t	option = `0`,
		Int_t	bufsize = `0`
	)

virtual

Write this object to the current directory.

For more see the const version of this method.

Reimplemented in TSQLFile, TXMLFile, TDirectory, TBuffer, TFile, TParallelMergingFile, ROOT::TBufferMergerFile, TDirectoryFile, TCollection, TMap, and TTree.

Definition at line 898 of file TObject.cxx.

◆ Write() [2/2]

Int_t TObject::Write	(	const char *	name = `nullptr`,
		Int_t	option = `0`,
		Int_t	bufsize = `0`
	)		const

virtual

Write this object to the current directory.

The data structure corresponding to this object is serialized. The corresponding buffer is written to the current directory with an associated key with name "name".

Writing an object to a file involves the following steps:

Creation of a support TKey object in the current directory. The TKey object creates a TBuffer object.
The TBuffer object is filled via the class::Streamer function.
If the file is compressed (default) a second buffer is created to hold the compressed buffer.
Reservation of the corresponding space in the file by looking in the TFree list of free blocks of the file.
The buffer is written to the file.

Bufsize can be given to force a given buffer size to write this object. By default, the buffersize will be taken from the average buffer size of all objects written to the current file so far.

If a name is specified, it will be the name of the key. If name is not given, the name of the key will be the name as returned by GetName().

The option can be a combination of: kSingleKey, kOverwrite or kWriteDelete Using the kOverwrite option a previous key with the same name is overwritten. The previous key is deleted before writing the new object. Using the kWriteDelete option a previous key with the same name is deleted only after the new object has been written. This option is safer than kOverwrite but it is slower. NOTE: Neither kOverwrite nor kWriteDelete reduces the size of a TFile– the space is simply freed up to be overwritten; in the case of a TTree, it is more complicated. If one opens a TTree, appends some entries, then writes it out, the behaviour is effectively the same. If, however, one creates a new TTree and writes it out in this way, only the metadata is replaced, effectively making the old data invisible without deleting it. TTree::Delete() can be used to mark all disk space occupied by a TTree as free before overwriting its metadata this way. The kSingleKey option is only used by TCollection::Write() to write a container with a single key instead of each object in the container with its own key.

An object is read from the file into memory via TKey::Read() or via TObject::Read().

The function returns the total number of bytes written to the file. It returns 0 if the object cannot be written.

Reimplemented in TSQLFile, TXMLFile, TDirectory, TBuffer, TFile, TParallelMergingFile, TDirectoryFile, TCollection, TMap, and TTree.

Definition at line 876 of file TObject.cxx.

Friends And Related Symbol Documentation

◆ ROOT::Internal::DeleteChangesMemoryImpl

bool ROOT::Internal::DeleteChangesMemoryImpl ( )

friend

◆ TClonesArray

friend class TClonesArray

friend

Definition at line 240 of file TObject.h.

Member Data Documentation

◆ fBits

UInt_t TObject::fBits

private

bit field status word

Definition at line 45 of file TObject.h.

◆ fgDtorOnly

Longptr_t TObject::fgDtorOnly = 0

staticprivate

object for which to call dtor only (i.e. no delete)

Definition at line 47 of file TObject.h.

◆ fgObjectStat

Bool_t TObject::fgObjectStat = kTRUE

staticprivate

if true keep track of objects in TObjectTable

Definition at line 48 of file TObject.h.

◆ fUniqueID

UInt_t TObject::fUniqueID

private

object unique identifier

Definition at line 44 of file TObject.h.

Libraries for TObject:

[legend]

The documentation for this class was generated from the following files:

core/base/inc/TObject.h
core/base/src/TObject.cxx

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Friends

Member Enumeration Documentation

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ EDeprecatedStatusBits

◆ EStatusBits

Constructor & Destructor Documentation

◆ TObject() [1/2]

◆ TObject() [2/2]

◆ ~TObject()

Member Function Documentation

◆ AbstractMethod()

◆ AddToTObjectTable()

◆ AppendPad()

◆ Browse()

◆ CheckedHash()

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ ClassName()

◆ Clear()

◆ Clone()

◆ Compare()

◆ Copy()

◆ DeclFileName()

◆ Delete()

◆ DistancetoPrimitive()

◆ DoError()

◆ Draw()

◆ DrawClass()

◆ DrawClone()

◆ Dump()

◆ Error()

◆ Execute() [1/2]

◆ Execute() [2/2]

◆ ExecuteEvent()

◆ Fatal()

◆ FindObject() [1/2]

◆ FindObject() [2/2]

◆ GetDrawOption()

◆ GetDtorOnly()

◆ GetIconName()

◆ GetName()

◆ GetObjectInfo()

◆ GetObjectStat()

◆ GetOption()

◆ GetTitle()

◆ GetUniqueID()

◆ HandleTimer()

◆ Hash()

◆ HasInconsistentHash()

◆ Info()

◆ InheritsFrom() [1/2]

◆ InheritsFrom() [2/2]

◆ Inspect()

◆ InvertBit()

◆ IsA()

◆ IsDestructed()

◆ IsEqual()

◆ IsFolder()

◆ IsOnHeap()

◆ IsSortable()

◆ IsZombie()

◆ ls()

◆ MakeZombie()

◆ MayNotUse()

◆ Notify()

◆ Obsolete()

◆ operator delete() [1/2]

◆ operator delete() [2/2]

◆ operator delete[]() [1/2]