ROOT logo
ROOT » CORE » BASE » TQObjSender

class TQObjSender: public TQObject

This is the ROOT implementation of the Qt object communication
mechanism (see also

Signals and slots are used for communication between objects.
When an object has changed in some way that might be interesting
for the outside world, it emits a signal to tell whoever is
listening. All slots that are connected to this signal will be
activated (called). It is even possible to connect a signal
directly to another signal (this will emit the second signal
immediately whenever the first is emitted.) There is no limitation
on the number of slots that can be connected to a signal.
The slots will be activated in the order they were connected
to the signal. This mechanism allows objects to be easily reused,
because the object that emits a signal does not need to know
to which objects the signals are connected.
Together, signals and slots make up a powerfull component
programming mechanism.

This implementation is provided by
Valeriy Onuchin (

Function Members (Methods)

static Bool_tTQObject::AreAllSignalsBlocked()
Bool_tTQObject::AreSignalsBlocked() const
static Bool_tTQObject::BlockAllSignals(Bool_t b)
Bool_tTQObject::BlockSignals(Bool_t b)
virtual voidTQObject::ChangedBy(const char* method)SIGNAL
static TClass*Class()
static TClass*TQObject::Class()
voidTQObject::CollectClassSignalLists(TList& list, TClass* cls)
Bool_tTQObject::Connect(const char* signal, const char* receiver_class, void* receiver, const char* slot)
static Bool_tTQObject::Connect(TQObject* sender, const char* signal, const char* receiver_class, void* receiver, const char* slot)
static Bool_tTQObject::Connect(const char* sender_class, const char* signal, const char* receiver_class, void* receiver, const char* slot)
virtual voidTQObject::Connected(const char*)
virtual voidTQObject::Destroyed()SIGNAL
Bool_tTQObject::Disconnect(const char* signal = 0, void* receiver = 0, const char* slot = 0)
static Bool_tTQObject::Disconnect(TQObject* sender, const char* signal = 0, void* receiver = 0, const char* slot = 0)
static Bool_tTQObject::Disconnect(const char* class_name, const char* signal, void* receiver = 0, const char* slot = 0)
virtual voidTQObject::Disconnected(const char*)
voidTQObject::Emit(const char* signal)
voidTQObject::Emit(const char* signal, Long_t* paramArr)
voidTQObject::Emit(const char* signal, const char* params)
voidTQObject::Emit(const char* signal, Double_t param)
voidTQObject::Emit(const char* signal, Long_t param)
voidTQObject::Emit(const char* signal, Long64_t param)
voidTQObject::Emit(const char* signal, Bool_t param)
voidTQObject::Emit(const char* signal, Char_t param)
voidTQObject::Emit(const char* signal, UChar_t param)
voidTQObject::Emit(const char* signal, Short_t param)
voidTQObject::Emit(const char* signal, UShort_t param)
voidTQObject::Emit(const char* signal, Int_t param)
voidTQObject::Emit(const char* signal, UInt_t param)
voidTQObject::Emit(const char* signal, ULong_t param)
voidTQObject::Emit(const char* signal, ULong64_t param)
voidTQObject::Emit(const char* signal, Float_t param)
voidTQObject::EmitVA(const char* signal, Int_t nargs)
voidTQObject::EmitVA(const char* signal, Int_t nargs, va_list va)
TList*TQObject::GetListOfClassSignals() const
TList*TQObject::GetListOfConnections() const
TList*TQObject::GetListOfSignals() const
virtual Bool_tTQObject::HasConnection(const char* signal_name) const
virtual voidTQObject::HighPriority(const char* signal_name, const char* slot_name = 0)
virtual TClass*IsA() const
virtual TClass*TQObject::IsA() const
static voidTQObject::LoadRQ_OBJECT()
virtual voidTQObject::LowPriority(const char* signal_name, const char* slot_name = 0)
virtual voidTQObject::Message(const char* msg)SIGNAL
virtual Int_tTQObject::NumberOfConnections() const
virtual Int_tTQObject::NumberOfSignals() const
virtual voidSetSender(void* sender)
voidSetSenderClassName(const char* sclass = "")
virtual voidShowMembers(TMemberInspector& insp, char* parent)
virtual voidTQObject::ShowMembers(TMemberInspector& insp, char* parent)
virtual voidStreamer(TBuffer& b)
virtual voidTQObject::Streamer(TBuffer& b)
voidStreamerNVirtual(TBuffer& b)
voidTQObject::StreamerNVirtual(TBuffer& b)
static Int_tTQObject::CheckConnectArgs(TQObject* sender, TClass* sender_class, const char* signal, TClass* receiver_class, const char* slot)
static Bool_tTQObject::ConnectToClass(TQObject* sender, const char* signal, TClass* receiver_class, void* receiver, const char* slot)
static Bool_tTQObject::ConnectToClass(const char* sender_class, const char* signal, TClass* receiver_class, void* receiver, const char* slot)
virtual void*GetSender()
virtual void*TQObject::GetSender()
virtual const char*GetSenderClassName() const
virtual const char*TQObject::GetSenderClassName() const

Data Members

TList*TQObject::fListOfConnections! list of connections to this object
TList*TQObject::fListOfSignals! list of signals from this object
void*fSenderdelegation object
TStringfSenderClassclass name of delegation object
Bool_tTQObject::fSignalsBlocked! flag used for suppression of signals
static Bool_tTQObject::fgAllSignalsBlockedflag used for suppression of all signals

Class Charts

Inheritance Inherited Members Includes Libraries
Class Charts

Function documentation

void * GetSender()
{ return this; }
const char * GetSenderClassName() const
{ return ""; }
TQObject& operator=(const TQObjSender& )
TQObjSender(const TQObjSender& )
{ }
virtual ~TQObjSender()
{ Disconnect(); }
void SetSender(void* sender)
{ fSender = sender; }
void SetSenderClassName(const char* sclass = "")
{ fSenderClass = sclass; }