class TClass: public TDictionary


The ROOT global object gROOT contains a list of all defined
classes. This list is build when a reference to a class dictionary
is made. When this happens, the static "class"::Dictionary()
function is called to create a TClass object describing the
class. The Dictionary() function is defined in the ClassDef
macro and stored (at program startup or library load time) together
with the class name in the TClassTable singleton object.
For a description of all dictionary classes see TDictionary.


Function Members (Methods)

public:
TClass()
TClass(const char* name)
TClass(const char* name, Version_t cversion, const char* dfil = 0, const char* ifil = 0, Int_t dl = 0, Int_t il = 0)
TClass(const char* name, Version_t cversion, const type_info& info, TVirtualIsAProxy* isa, ShowMembersFunc_t showmember, const char* dfil, const char* ifil, Int_t dl, Int_t il)
virtual~TClass()
voidTObject::AbstractMethod(const char* method) const
static voidAddClass(TClass* cl)
voidAddImplFile(const char* filename, int line)
voidAddInstance(Bool_t heap = kFALSE)
voidAddRef(TClassRef* ref)
voidAdoptMemberStreamer(const char* name, TMemberStreamer* strm)
voidAdoptReferenceProxy(TVirtualRefProxy* proxy)
voidAdoptStreamer(TClassStreamer* strm)
virtual voidTObject::AppendPad(Option_t* option = "")
static Int_tAutoBrowse(TObject* obj, TBrowser* browser)
virtual voidBrowse(TBrowser* b)
Int_tBrowse(void* obj, TBrowser* b) const
voidBuildEmulatedRealData(const char* name, Long_t offset, TClass* cl)
voidBuildRealData(void* pointer = 0)
voidCalculateStreamerOffset()
Bool_tCanIgnoreTObjectStreamer()
Bool_tCanSplit() const
static TClass*Class()
virtual const char*TObject::ClassName() const
virtual voidTNamed::Clear(Option_t* option = "")
virtual TObject*TNamed::Clone(const char* newname = "") const
virtual Int_tTNamed::Compare(const TObject* obj) const
virtual voidTNamed::Copy(TObject& named) const
voidCopyCollectionProxy(const TVirtualCollectionProxy&)
virtual voidTObject::Delete(Option_t* option = "")
voidDeleteArray(void* ary, Bool_t dtorOnly = kFALSE)
voidDestructor(void* obj, Bool_t dtorOnly = kFALSE)
virtual Int_tTObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual voidDraw(Option_t* option = "")
virtual voidTObject::DrawClass() const
virtual TObject*TObject::DrawClone(Option_t* option = "") const
virtual voidDump() const
voidDump(void* obj) const
void*DynamicCast(const TClass* base, void* obj, Bool_t up = kTRUE)
virtual voidTObject::Error(const char* method, const char* msgfmt) const
char*EscapeChars(const char* text) const
virtual voidTObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual voidTObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual voidTObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual voidTObject::Fatal(const char* method, const char* msgfmt) const
virtual voidTNamed::FillBuffer(char*& buffer)
virtual TObject*TObject::FindObject(const char* name) const
virtual TObject*TObject::FindObject(const TObject* obj) const
TVirtualStreamerInfo*FindStreamerInfo(UInt_t checksum) const
TClass*GetActualClass(const void* object) const
TClass*GetBaseClass(const char* classname)
TClass*GetBaseClass(const TClass* base)
Int_tGetBaseClassOffset(const TClass* base)
TClass*GetBaseDataMember(const char* datamember)
UInt_tGetCheckSum(UInt_t code = 0) const
static TClass*GetClass(const char* name, Bool_t load = kTRUE)
static TClass*GetClass(const type_info& typeinfo, Bool_t load = kTRUE)
Cint::G__ClassInfo*GetClassInfo() const
Version_tGetClassVersion() const
TVirtualCollectionProxy*GetCollectionProxy() const
const char*GetContextMenuTitle() const
TVirtualStreamerInfo*GetCurrentStreamerInfo()
TDataMember*GetDataMember(const char* datamember) const
Long_tGetDataMemberOffset(const char* membername) const
Short_tGetDeclFileLine() const
const char*GetDeclFileName() const
ROOT::DelFunc_tGetDelete() const
ROOT::DelArrFunc_tGetDeleteArray() const
ROOT::DesFunc_tGetDestructor() const
static VoidFuncPtr_tGetDict(const char* cname)
static VoidFuncPtr_tGetDict(const type_info& info)
virtual Option_t*TObject::GetDrawOption() const
static Long_tTObject::GetDtorOnly()
UInt_tGetHeapInstanceCount() const
virtual const char*TObject::GetIconName() const
Short_tGetImplFileLine() const
const char*GetImplFileName() const
UInt_tGetInstanceCount() const
TVirtualIsAProxy*GetIsAProxy() const
TList*GetListOfAllPublicDataMembers()
TList*GetListOfAllPublicMethods()
TList*GetListOfBases()
TList*GetListOfDataMembers()
TList*GetListOfMethods()
TList*GetListOfRealData() const
voidGetMenuItems(TList* listitems)
TList*GetMenuList() const
TMethod*GetMethod(const char* method, const char* params)
TMethod*GetMethodAllAny(const char* method)
TMethod*GetMethodAny(const char* method)
TMethod*GetMethodWithPrototype(const char* method, const char* proto)
virtual const char*TNamed::GetName() const
Int_tGetNdata()
ROOT::NewFunc_tGetNew() const
ROOT::NewArrFunc_tGetNewArray() const
Int_tGetNmethods()
virtual char*TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_tTObject::GetObjectStat()
virtual Option_t*TObject::GetOption() const
TRealData*GetRealData(const char* name) const
TVirtualRefProxy*GetReferenceProxy() const
const char*GetSharedLibs()
ShowMembersFunc_tGetShowMembersWrapper() const
TClassStreamer*GetStreamer() const
TVirtualStreamerInfo*GetStreamerInfo(Int_t version = 0) const
TObjArray*GetStreamerInfos() const
virtual const char*TNamed::GetTitle() const
const type_info*GetTypeInfo() const
virtual UInt_tTObject::GetUniqueID() const
virtual Bool_tTObject::HandleTimer(TTimer* timer)
Bool_tHasDefaultConstructor() const
virtual ULong_tTNamed::Hash() const
voidIgnoreTObjectStreamer(Bool_t ignore = kTRUE)
virtual voidTObject::Info(const char* method, const char* msgfmt) const
virtual Bool_tInheritsFrom(const char* cl) const
virtual Bool_tInheritsFrom(const TClass* cl) const
virtual voidTObject::Inspect() const
voidTObject::InvertBit(UInt_t f)
virtual TClass*IsA() const
static TClass::ENewTypeIsCallingNew()
virtual Bool_tTObject::IsEqual(const TObject* obj) const
virtual Bool_tIsFolder() const
Bool_tIsFolder(void* obj) const
Bool_tIsForeign() const
Bool_tIsLoaded() const
Bool_tTObject::IsOnHeap() const
virtual Bool_tTNamed::IsSortable() const
Bool_tIsStartingWithTObject() const
Bool_tIsTObject() const
Bool_tTObject::IsZombie() const
static TClass*Load(TBuffer& b)
virtual voidTNamed::ls(Option_t* option = "") const
voidMakeCustomMenuList()
voidTObject::MayNotUse(const char* method) const
voidMove(void* arenaFrom, void* arenaTo) const
void*New(TClass::ENewType defConstructor = kClassNew)
void*New(void* arena, TClass::ENewType defConstructor = kClassNew)
void*NewArray(Long_t nElements, TClass::ENewType defConstructor = kClassNew)
void*NewArray(Long_t nElements, void* arena, TClass::ENewType defConstructor = kClassNew)
virtual Bool_tTObject::Notify()
static voidTObject::operator delete(void* ptr)
static voidTObject::operator delete(void* ptr, void* vp)
static voidTObject::operator delete[](void* ptr)
static voidTObject::operator delete[](void* ptr, void* vp)
void*TObject::operator new(size_t sz)
void*TObject::operator new(size_t sz, void* vp)
void*TObject::operator new[](size_t sz)
void*TObject::operator new[](size_t sz, void* vp)
virtual voidTObject::Paint(Option_t* option = "")
virtual voidTObject::Pop()
virtual voidPostLoadCheck()
virtual voidTNamed::Print(Option_t* option = "") const
virtual Long_tProperty() const
virtual Int_tTObject::Read(const char* name)
Int_tReadBuffer(TBuffer& b, void* pointer)
Int_tReadBuffer(TBuffer& b, void* pointer, Int_t version, UInt_t start, UInt_t count)
virtual voidTObject::RecursiveRemove(TObject* obj)
static voidRemoveClass(TClass* cl)
voidRemoveRef(TClassRef* ref)
voidReplaceWith(TClass* newcl, Bool_t recurse = kTRUE) const
voidTObject::ResetBit(UInt_t f)
voidResetClassInfo(Long_t tagnum)
voidResetInstanceCount()
voidResetMenuList()
virtual voidTObject::SaveAs(const char* filename = "", Option_t* option = "") const
virtual voidTObject::SavePrimitive(basic_ostream<char,char_traits<char> >& out, Option_t* option = "")
voidTObject::SetBit(UInt_t f)
voidTObject::SetBit(UInt_t f, Bool_t set)
voidSetCollectionProxy(const ROOT::TCollectionProxyInfo&)
voidSetContextMenuTitle(const char* title)
voidSetCurrentStreamerInfo(TVirtualStreamerInfo* info)
voidSetDeclFile(const char* name, int line)
voidSetDelete(ROOT::DelFunc_t deleteFunc)
voidSetDeleteArray(ROOT::DelArrFunc_t deleteArrayFunc)
voidSetDestructor(ROOT::DesFunc_t destructorFunc)
virtual voidTObject::SetDrawOption(Option_t* option = "")
static voidTObject::SetDtorOnly(void* obj)
voidSetGlobalIsA(IsAGlobalFunc_t)
voidSetImplFileName(const char* implFileName)
voidSetMemberStreamer(const char* name, MemberStreamerFunc_t strm)
virtual voidTNamed::SetName(const char* name)
virtual voidTNamed::SetNameTitle(const char* name, const char* title)
voidSetNew(ROOT::NewFunc_t newFunc)
voidSetNewArray(ROOT::NewArrFunc_t newArrayFunc)
static voidTObject::SetObjectStat(Bool_t stat)
TVirtualStreamerInfo*SetStreamerInfo(Int_t version, const char* info = "")
virtual voidTNamed::SetTitle(const char* title = "")
virtual voidTObject::SetUniqueID(UInt_t uid)
voidSetUnloaded()
virtual voidShowMembers(TMemberInspector& insp, char* parent)
Int_tSize() const
virtual Int_tTNamed::Sizeof() const
voidStore(TBuffer& b) const
virtual voidStreamer(TBuffer& b)
voidStreamer(void* obj, TBuffer& b)
voidStreamerNVirtual(TBuffer& b)
virtual voidTObject::SysError(const char* method, const char* msgfmt) const
Bool_tTObject::TestBit(UInt_t f) const
Int_tTObject::TestBits(UInt_t f) const
virtual voidTObject::UseCurrentStyle()
virtual voidTObject::Warning(const char* method, const char* msgfmt) const
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const
Int_tWriteBuffer(TBuffer& b, void* pointer, const char* info = "")
protected:
TClass(const TClass& tc)
virtual voidTObject::DoError(int level, const char* location, const char* fmt, va_list va) const
voidTObject::MakeZombie()
TClass&operator=(const TClass&)
private:
voidForceReload(TClass* oldcl)
Int_tGetBaseClassOffsetRecurse(const TClass* base)
TMethod*GetClassMethod(Long_t faddr)
TMethod*GetClassMethod(const char* name, const char* signature)
voidInit(const char* name, Version_t cversion, const type_info* info, TVirtualIsAProxy* isa, ShowMembersFunc_t showmember, const char* dfil, const char* ifil, Int_t dl, Int_t il)
voidSetClassSize(Int_t sizof)
voidSetClassVersion(Version_t version)

Data Members

public:
enum { kClassSaved
kIgnoreTObjectStreamer
kUnloaded
kIsTObject
kIsForeign
kIsEmulation
kStartWithTObject
kWarned
kHasNameMapNode
};
enum ENewType { kRealNew
kClassNew
kDummyNew
};
enum { kLoading
kDefault
kEmulated
kTObject
kInstrumented
kForeign
kExternal
};
enum TDictionary::ESTLType { kNone
kVector
kList
kDeque
kMap
kMultimap
kSet
kMultiset
};
enum TObject::EStatusBits { kCanDelete
kMustCleanup
kObjInCanvas
kIsReferenced
kHasUUID
kCannotPick
kNoContextMenu
kInvalidObject
};
enum TObject::[unnamed] { kIsOnHeap
kNotDeleted
kZombie
kBitMask
kSingleKey
kOverwrite
kWriteDelete
};
protected:
TStringTNamed::fNameobject identifier
TStringTNamed::fTitleobject title
private:
TList*fAllPubDataall public data members (including from base classes)
TList*fAllPubMethodall public methods (including from base classes)
TList*fBaselinked list for base classes
UInt_tfCheckSumchecksum of data members and base classes
Cint::G__ClassInfo*fClassInfopointer to CINT class info class
TList*fClassMenuListlist of class menu items
Version_tfClassVersionClass version Identifier
TVirtualCollectionProxy*fCollectionProxyCollection interface
TStringfContextMenuTitlecontext menu title
TVirtualStreamerInfo*fCurrentInfo!cached current streamer info.
TList*fDatalinked list for data members
Short_tfDeclFileLineline of class declaration
const char*fDeclFileNamename of class declaration file
void*fDeletepointer to a function deleting one object.
void*fDeleteArraypointer to a function deleting an array of objects.
void*fDestructorpointer to a function call an object's destructor.
IsAGlobalFunc_tfGlobalIsApointer to a global IsA function.
Short_tfImplFileLineline of class implementation
const char*fImplFileNamename of class implementation file
UInt_tfInstanceCountnumber of instances of this class
void*fInterStreamer!saved info to call Streamer
TVirtualIsAProxy*fIsA!pointer to the class's IsA proxy.
TMethodCall*fIsAMethod!saved info to call a IsA member function
TList*fMethodlinked list for methods
void*fNewpointer to a function newing one object.
void*fNewArraypointer to a function newing an array of objects.
Long_tfOffsetStreamer!saved info to call Streamer
UInt_tfOnHeapnumber of instances on heap
Long_tfProperty!Property
TList*fRealDatalinked list for persistent members including base classes
TVirtualRefProxy*fRefProxy!Pointer to reference proxy if this class represents a reference
TClassRef*fRefStart!List of references to this object
TStringfSharedLibsshared libraries containing class code
ShowMembersFunc_tfShowMemberspointer to the class's ShowMembers function
Int_tfSizeofSizeof the class.
TClassStreamer*fStreamerpointer to streamer function
TObjArray*fStreamerInfoArray of TVirtualStreamerInfo
Int_tfStreamerType!cached of the streaming method to use
const type_info*fTypeInfopointer to the C++ type information.
Bool_tfVersionUsed!Indicates whether GetClassVersion has been called
static TClass::ENewTypefgCallingNewIntent of why/how TClass::New() is called
static Int_tfgClassCountprovides unique id for a each class
static THashTable*fgClassShortTypedefHash
static THashTable*fgClassTypedefHash
static ROOT::TMapTypeToTClass*fgIdMapMap from typeid to TClass pointer

Class Charts

Inheritance Inherited Members Includes Libraries
Class Charts

Function documentation

void AddClass(TClass* cl)
 static: Add a class to the list and map of classes.
void RemoveClass(TClass* cl)
 static: Remove a class from the list and map of classes
TClass()
 Default ctor.
TClass(const char *name)
 Create a TClass object. This object contains the full dictionary
 of a class. It has list to baseclasses, datamembers and methods.
 Use this ctor to create a standalone TClass object. Most useful
 to get a TClass interface to an interpreted class. Used by TTabCom.
 Normally you would use TClass::GetClass("class") to get access to a
 TClass object for a certain class.
TClass(const char* name, Version_t cversion, const char* dfil = 0, const char* ifil = 0, Int_t dl = 0, Int_t il = 0)
 Create a TClass object. This object contains the full dictionary
 of a class. It has list to baseclasses, datamembers and methods.
TClass(const char* name, Version_t cversion, const type_info& info, TVirtualIsAProxy* isa, ShowMembersFunc_t showmember, const char* dfil, const char* ifil, Int_t dl, Int_t il)
 Create a TClass object. This object contains the full dictionary
 of a class. It has list to baseclasses, datamembers and methods.
void ForceReload(TClass* oldcl)
 we found at least one equivalent.
 let's force a reload
void Init(const char* name, Version_t cversion, const type_info* info, TVirtualIsAProxy* isa, ShowMembersFunc_t showmember, const char* dfil, const char* ifil, Int_t dl, Int_t il)
 Initialize a TClass object. This object contains the full dictionary
 of a class. It has list to baseclasses, datamembers and methods.
TClass(const TClass& cl)
copy constructor
TClass& operator=(const TClass& )
assignement operator
~TClass()
 TClass dtor. Deletes all list that might have been created.
void AddImplFile(const char* filename, int line)
void AddRef(TClassRef* ref)
 Register a TClassRef object which points to this TClass object.
 When this TClass object is deleted, 'ref' will be 'Reset'.
Int_t AutoBrowse(TObject* obj, TBrowser* browser)
 Browse external object inherited from TObject.
 It passes through inheritance tree and calls TBrowser::Add
 in appropriate cases. Static function.
Int_t Browse(void* obj, TBrowser* b) const
 Browse objects of of the class described by this TClass object.
void Browse(TBrowser* b)
 This method is called by a browser to get the class information.
void BuildRealData(void* pointer = 0)
 Build a full list of persistent data members.
 Scans the list of all data members in the class itself and also
 in all base classes. For each persistent data member, inserts a
 TRealData object in the list fRealData.

 If pointer is not 0, uses the object at pointer
 otherwise creates a temporary object of this class.
void BuildEmulatedRealData(const char* name, Long_t offset, TClass* cl)
 Build the list of real data for an emulated class
void CalculateStreamerOffset()
 Calculate the offset between an object of this class to
 its base class TObject. The pointer can be adjusted by
 that offset to access any virtual method of TObject like
 Streamer() and ShowMembers().
Bool_t CanSplit()
 Return true if the data member of this TClass can be saved separately.
void CopyCollectionProxy(const TVirtualCollectionProxy& )
 Copy the argument.
void Draw(Option_t* option = "")
 Draw detailed class inheritance structure.
 If a class B inherits from a class A, the description of B is drawn
 on the right side of the description of A.
 Member functions overridden by B are shown in class A with a blue line
 erasing the corresponding member function
void Dump(void* obj) const
 Dump contents of object on stdout.
 Using the information in the object dictionary
 each data member is interpreted.
 If a data member is a pointer, the pointer value is printed
 'obj' is assume to point to an object of the class describe by this TClass

 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
char * EscapeChars(const char* text) const
 Introduce an escape character (@) in front of a special chars.
 You need to use the result immediately before it is being overwritten.
TClass * GetActualClass(const void* object) const
 Return a pointer the the real class of the object.
 This is equivalent to object->IsA() when the class has a ClassDef.
 It is REQUIRED that object is coming from a proper pointer to the
 class represented by 'this'.
 Example: Special case:
    class MyClass : public AnotherClass, public TObject
 then on return, one must do:
    TObject *obj = (TObject*)((void*)myobject)directory->Get("some object of MyClass");
    MyClass::Class()->GetActualClass(obj); // this would be wrong!!!
 Also if the class represented by 'this' and NONE of its parents classes
 have a virtual ptr table, the result will be 'this' and NOT the actual
 class.
TClass * GetBaseClass(const char *classname)
 Return pointer to the base class "classname". Returns 0 in case
 "classname" is not a base class. Takes care of multiple inheritance.
TClass * GetBaseClass(const TClass *cl)
 Return pointer to the base class "cl". Returns 0 in case "cl"
 is not a base class. Takes care of multiple inheritance.
Int_t GetBaseClassOffsetRecurse(const TClass* base)
 Return data member offset to the base class "cl".
 Returns -1 in case "cl" is not a base class.
 Returns -2 if cl is a base class, but we can't find the offset
 because it's virtual.
 Takes care of multiple inheritance.
Int_t GetBaseClassOffset(const TClass* base)
 Return data member offset to the base class "cl".
 Returns -1 in case "cl" is not a base class.
 Takes care of multiple inheritance.
TClass * GetBaseDataMember(const char* datamember)
 Return pointer to (base) class that contains datamember.
TVirtualCollectionProxy * GetCollectionProxy()
 Return the proxy describinb the collection (if any).
TClassStreamer * GetStreamer()
 Return the proxy describinb the collection (if any).
TVirtualIsAProxy* GetIsAProxy()
 Return the proxy implementing the IsA functionality.
TClass * GetClass(const char *name, Bool_t load)
 Static method returning pointer to TClass of the specified class name.
 If load is true an attempt is made to obtain the class by loading
 the appropriate shared library (directed by the rootmap file).
 Returns 0 in case class is not found.
TClass * GetClass(const type_info& typeinfo, Bool_t load)
 Return pointer to class with name.
VoidFuncPtr_t GetDict(const char *cname)
 Return a pointer to the dictionary loading function generated by
 rootcint
VoidFuncPtr_t GetDict(const type_info& info)
 Return a pointer to the dictionary loading function generated by
 rootcint
TDataMember * GetDataMember(const char* datamember) const
 Return pointer to datamember object with name "datamember".
Long_t GetDataMemberOffset(const char* membername) const
 return offset for member name. name can be a data member in
 the class itself, one of its base classes, or one member in
 one of the aggregated classes.

 In case of an emulated class, the list of emulated TRealData is built
TRealData* GetRealData(const char* name) const
 -- Return pointer to TRealData element with name "name".

 Name can be a data member in the class itself,
 one of its base classes, or a member in
 one of the aggregated classes.

 In case of an emulated class, the list of emulated TRealData is built.

const char * GetSharedLibs()
 Get the list of shared libraries containing the code for class cls.
 The first library in the list is the one containing the class, the
 others are the libraries the first one depends on. Returns 0
 in case the library is not found.
TList * GetListOfBases()
 Return list containing the TBaseClass(es) of a class.
TList * GetListOfDataMembers()
 Return list containing the TDataMembers of a class.
TList * GetListOfMethods()
 Return list containing the TMethods of a class.
TList * GetListOfAllPublicMethods()
 Returns a list of all public methods of this class and its base classes.
 Refers to a subset of the methods in GetListOfMethods() so don't do
 GetListOfAllPublicMethods()->Delete().
 Algorithm used to get the list is:
 - put all methods of the class in the list (also protected and private
   ones).
 - loop over all base classes and add only those methods not already in the
   list (also protected and private ones).
 - once finished, loop over resulting list and remove all private and
   protected methods.
TList * GetListOfAllPublicDataMembers()
 Returns a list of all public data members of this class and its base
 classes. Refers to a subset of the data members in GetListOfDatamembers()
 so don't do GetListOfAllPublicDataMembers()->Delete().
void GetMenuItems(TList* listitems)
 Returns list of methods accessible by context menu.
Bool_t IsFolder(void* obj) const
 Return kTRUE if the class has elements.
void RemoveRef(TClassRef* ref)
 Unregister the TClassRef object.
void ReplaceWith(TClass* newcl, Bool_t recurse = kTRUE) const
 Inform the other objects to replace this object by the new TClass (newcl)
void ResetClassInfo(Long_t tagnum)
 Make sure that the current G__ClassInfo is up to date.
void ResetMenuList()
 Resets the menu list to it's standard value.
void MakeCustomMenuList()
 Makes a customizable version of the popup menu list, i.e. makes a list
 of TClassMenuItem objects of methods accessible by context menu.
 The standard (and different) way consists in having just one element
 in this list, corresponding to the whole standard list.
 Once the customizable version is done, one can remove or add elements.
void Move(void* arenaFrom, void* arenaTo) const
 Register the fact that an object was moved from the memory location
 'arenaFrom' to the memory location 'arenaTo'.
TMethod * GetMethodAny(const char* method)
 Return pointer to method without looking at parameters.
 Does not look in (possible) base classes.
TMethod * GetMethodAllAny(const char* method)
 Return pointer to method without looking at parameters.
 Does look in all base classes.
TMethod * GetMethod(const char* method, const char* params)
 Find the best method (if there is one) matching the parameters.
 The params string must contain argument values, like "3189, \"aap\", 1.3".
 The function invokes GetClassMethod to search for a possible method
 in the class itself or in its base classes. Returns 0 in case method
 is not found.
TMethod * GetMethodWithPrototype(const char* method, const char* proto)
 Find the method with a given prototype. The proto string must be of the
 form: "char*,int,double". Returns 0 in case method is not found.
TMethod * GetClassMethod(Long_t faddr)
 Look for a method in this class that has the interface function
 address faddr.
TMethod * GetClassMethod(const char* name, const char* signature)
 Look for a method in this class that has the name and
 signature
Int_t GetNdata()
 Return the number of data members of this class
 Note that in case the list of data members is not yet created, it will be done
 by GetListOfDataMembers().
Int_t GetNmethods()
 Return the number of methods of this class
 Note that in case the list of methods is not yet created, it will be done
 by GetListOfMethods().
TVirtualStreamerInfo* GetStreamerInfo(Int_t version = 0) const
 returns a pointer to the TVirtualStreamerInfo object for version
 If the object doest not exist, it is created

 Note: There are two special version numbers:

       0: Use the class version from the currently loaded class library.
      -1: Assume no class library loaded (emulated class).

 Warning:  If we create a new streamer info, whether or not the build
           optimizes is controlled externally to us by a global variable!
           Don't call us unless you have set that variable properly
           with TStreamer::Optimize()!

void IgnoreTObjectStreamer(Bool_t ignore = kTRUE)
  When the class kIgnoreTObjectStreamer bit is set, the automatically
  generated Streamer will not call TObject::Streamer.
  This option saves the TObject space overhead on the file.
  However, the information (fBits, fUniqueID) of TObject is lost.

  Note that this function must be called for the class deriving
  directly from TObject, eg, assuming that BigTrack derives from Track
  and Track derives from TObject, one must do:
     Track::Class()->IgnoreTObjectStreamer();
  and not:
     BigTrack::Class()->IgnoreTObjectStreamer();
Bool_t InheritsFrom(const char *classname)
 Return kTRUE if this class inherits from a class with name "classname".
 note that the function returns KTRUE in case classname is the class itself
Bool_t InheritsFrom(const TClass *cl)
 Return kTRUE if this class inherits from class cl.
 note that the function returns KTRUE in case cl is the class itself
void * DynamicCast(const TClass* base, void* obj, Bool_t up = kTRUE)
 Cast obj of this class type up to baseclass cl if up is true.
 Cast obj of this class type down from baseclass cl if up is false.
 If this class is not a baseclass of cl return 0, else the pointer
 to the cl part of this (up) or to this (down).
void * New(TClass::ENewType defConstructor = kClassNew)
 Return a pointer to a newly allocated object of this class.
 The class must have a default constructor. For meaning of
 defConstructor, see TClass::IsCallingNew().

 The constructor actually called here can be customized by
 using the rootcint pragma:
    #pragma link C++ ioctortype UserClass;
 For example, with this pragma and a class named MyClass,
 this method will called the first of the following 3
 constructors which exists and is public:
    MyClass(UserClass*);
    MyClass(TRootIOCtor*);
    MyClass(); // Or a constructor with all its arguments defaulted.

 When more than one pragma ioctortype is used, the first seen as priority
 For example with:
    #pragma link C++ ioctortype UserClass1;
    #pragma link C++ ioctortype UserClass2;
 We look in the following order:
    MyClass(UserClass1*);
    MyClass(UserClass2*);
    MyClass(TRootIOCtor*);
    MyClass(); // Or a constructor with all its arguments defaulted.

void * New(void* arena, TClass::ENewType defConstructor = kClassNew)
 Return a pointer to a newly allocated object of this class.
 The class must have a default constructor. For meaning of
 defConstructor, see TClass::IsCallingNew().
void * NewArray(Long_t nElements, TClass::ENewType defConstructor = kClassNew)
 Return a pointer to a newly allocated array of objects
 of this class.
 The class must have a default constructor. For meaning of
 defConstructor, see TClass::IsCallingNew().
void * NewArray(Long_t nElements, void* arena, TClass::ENewType defConstructor = kClassNew)
 Return a pointer to a newly allocated object of this class.
 The class must have a default constructor. For meaning of
 defConstructor, see TClass::IsCallingNew().
void Destructor(void* obj, Bool_t dtorOnly = kFALSE)
 Explicitly call destructor for object.
void DeleteArray(void* ary, Bool_t dtorOnly = kFALSE)
 Explicitly call operator delete[] for an array.
void SetCurrentStreamerInfo(TVirtualStreamerInfo* info)
 Set pointer to current TVirtualStreamerInfo
Int_t Size()
 Return size of object of this class.
TClass * Load(TBuffer& b)
 Load class description from I/O buffer and return class object.
void Store(TBuffer& b) const
 Store class description on I/O buffer.
Bool_t IsLoaded()
 Return true if the shared library of this class is currently in the a
 process's memory.  Return false, after the shared library has been
 unloaded or if this is an 'emulated' class created from a file's StreamerInfo.
Bool_t IsStartingWithTObject()
 Returns true if this class inherits from TObject and if the start of
 the TObject parts is at the very beginning of the objects.
 Concretly this means that the following code is proper for this class:
     ThisClass *ptr;
     void *void_ptr = (void)ptr;
     TObject *obj = (TObject*)void_ptr;
 This code would be wrong if 'ThisClass' did not inherit 'first' from
 TObject.
Bool_t IsTObject()
 Return kTRUE is the class inherits from TObject.
Bool_t IsForeign()
 Return kTRUE is the class is Foreign (the class does not have a Streamer method).
void PostLoadCheck()
 Do the initialization that can only be done after the CINT dictionary has
 been fully populated and can not be delayed efficiently.
Long_t Property()
 Set TObject::fBits and fStreamerType to cache information about the
 class.  The bits are
    kIsTObject : the class inherits from TObject
    kStartWithTObject:  TObject is the left-most class in the inheritance tree
    kIsForeign : the class doe not have a Streamer method
 The value of fStreamerType are
    kTObject : the class inherits from TObject
    kForeign : the class does not have a Streamer method
    kInstrumented: the class does have a Streamer method
    kExternal: the class has a free standing way of streaming itself
    kEmulated: the class is missing its shared library.
void SetCollectionProxy(const ROOT::TCollectionProxyInfo& )
 Create the collection proxy object (and the streamer object) from
 using the information in the TCollectionProxyInfo.
void SetContextMenuTitle(const char* title)
 Change (i.e. set) the title of the TNamed.
void SetGlobalIsA(IsAGlobalFunc_t )
 This function installs a global IsA function for this class.
 The global IsA function will be used if there is no local IsA function (fIsA)

 A global IsA function has the signature:

    TClass *func( TClass *cl, const void *obj);

 'cl' is a pointer to the  TClass object that corresponds to the
 'pointer type' used to retrieve the value 'obj'

  For example with:
    TNamed * m = new TNamed("example","test");
    TObject* o = m
 and
    the global IsA function would be called with TObject::Class() as
    the first parameter and the exact numerical value in the pointer
    'o'.

  In other word, inside the global IsA function. it is safe to C-style
  cast the value of 'obj' into a pointer to the class described by 'cl'.
void SetUnloaded()
 Call this method to indicate that the shared library containing this
 class's code has been removed (unloaded) from the process's memory
TVirtualStreamerInfo * SetStreamerInfo(Int_t version, const char* info = "")
 Info is a string describing the names and types of attributes
 written by the class Streamer function.
 If info is an empty string (when called by TObject::StreamerInfo)
 the default Streamer info string is build. This corresponds to
 the case of an automatically generated Streamer.
 In case of user defined Streamer function, it is the user responsability
 to implement a StreamerInfo function (override TObject::StreamerInfo).
 The user must call IsA()->SetStreamerInfo(info) from this function.
UInt_t GetCheckSum(UInt_t code = 0) const
 Compute and/or return the class check sum.
 The class ckecksum is used by the automatic schema evolution algorithm
 to uniquely identify a class version.
 The check sum is built from the names/types of base classes and
 data members.
 Algorithm from Victor Perevovchikov (perev@bnl.gov).

 if code==1 data members of type enum are not counted in the checksum
 if code==2 return the checksum of data members and base classes, not including the ranges and array size found in comments.
            This is needed for backward compatibility.
void AdoptReferenceProxy(TVirtualRefProxy* proxy)
 Adopt the Reference proxy pointer to indicate that this class
 represents a reference.
 When a new proxy is adopted, the old one is deleted.
void AdoptMemberStreamer(const char* name, TMemberStreamer* strm)
 Adopt the TMemberStreamer pointer to by p and use it to Stream non basic
 member name.
void SetMemberStreamer(const char* name, MemberStreamerFunc_t strm)
 Install a new member streamer (p will be copied).
Int_t ReadBuffer(TBuffer& b, void* pointer, Int_t version, UInt_t start, UInt_t count)
 Function called by the Streamer functions to deserialize information
 from buffer b into object at p.
 This function assumes that the class version and the byte count information
 have been read.
   version  is the version number of the class
   start    is the starting position in the buffer b
   count    is the number of bytes for this object in the buffer
Int_t ReadBuffer(TBuffer& b, void* pointer)
 Function called by the Streamer functions to deserialize information
 from buffer b into object at p.
Int_t WriteBuffer(TBuffer& b, void* pointer, const char* info = "")
 Function called by the Streamer functions to serialize object at p
 to buffer b. The optional argument info may be specified to give an
 alternative StreamerInfo instead of using the default StreamerInfo
 automatically built from the class definition.
 For more information, see class TVirtualStreamerInfo.
void Streamer(void* obj, TBuffer& b)
void AdoptStreamer(TClassStreamer* strm)
 Adopt a TClassStreamer object.  Ownership is transfered to this TClass
 object.
void SetNew(ROOT::NewFunc_t newFunc)
 Install a new wrapper around 'new'.
void SetNewArray(ROOT::NewArrFunc_t newArrayFunc)
 Install a new wrapper around 'new []'.
void SetDelete(ROOT::DelFunc_t deleteFunc)
 Install a new wrapper around 'delete'.
void SetDeleteArray(ROOT::DelArrFunc_t deleteArrayFunc)
 Install a new wrapper around 'delete []'.
void SetDestructor(ROOT::DesFunc_t destructorFunc)
 Install a new wrapper around the destructor.
TVirtualStreamerInfo * FindStreamerInfo(UInt_t checksum) const
 Find the TVirtualStreamerInfo in the StreamerInfos corresponding to checksum
Bool_t HasDefaultConstructor()
 Return true if we have access to a default constructor.
ROOT::NewFunc_t GetNew()
 Return the wrapper around new ThisClass().
ROOT::NewArrFunc_t GetNewArray()
 Return the wrapper around new ThisClass[].
ROOT::DelFunc_t GetDelete()
 Return the wrapper around delete ThiObject.
ROOT::DelArrFunc_t GetDeleteArray()
 Return the wrapper around delete [] ThiObject.
ROOT::DesFunc_t GetDestructor()
 Return the wrapper around the destructor
void SetClassVersion(Version_t version)
{ fClassVersion = version; fCurrentInfo = 0; }
void SetClassSize(Int_t sizof)
{ fSizeof = sizof; }
void AddInstance(Bool_t heap = kFALSE)
{ fInstanceCount++; if (heap) fOnHeap++; }
Bool_t CanIgnoreTObjectStreamer()
{ return TestBit(kIgnoreTObjectStreamer);}
void Dump(void* obj) const
{ TDictionary::Dump(); }
Version_t GetClassVersion()
{ fVersionUsed = kTRUE; return fClassVersion; }
const char * GetDeclFileName()
{ return fDeclFileName; }
Short_t GetDeclFileLine()
{ return fDeclFileLine; }
G__ClassInfo * GetClassInfo()
{ return fClassInfo; }
const char * GetContextMenuTitle()
{ return fContextMenuTitle; }
TVirtualStreamerInfo * GetCurrentStreamerInfo()
TList * GetListOfRealData()
{ return fRealData; }
const char * GetImplFileName()
{ return fImplFileName; }
Short_t GetImplFileLine()
{ return fImplFileLine; }
UInt_t GetInstanceCount()
{ return fInstanceCount; }
UInt_t GetHeapInstanceCount()
{ return fOnHeap; }
TList * GetMenuList()
{ return fClassMenuList; }
TVirtualRefProxy * GetReferenceProxy()
{ return fRefProxy; }
ShowMembersFunc_t GetShowMembersWrapper()
{ return fShowMembers; }
TObjArray * GetStreamerInfos()
{ return fStreamerInfo; }
const type_info * GetTypeInfo()
{ return fTypeInfo; }
Bool_t IsFolder(void* obj) const
{ return kTRUE; }
void ResetInstanceCount()
{ fInstanceCount = fOnHeap = 0; }
void SetDeclFile(const char* name, int line)
{ fDeclFileName = name; fDeclFileLine = line; }
void SetImplFileName(const char* implFileName)
{ fImplFileName = implFileName; }
ENewType IsCallingNew()
void Streamer(void* obj, TBuffer& b)

Author: Rene Brun 07/01/95
Last update: root/meta:$Id: TClass.h 21353 2007-12-13 07:11:49Z pcanal $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *

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