QMetaObject::Connection Class Reference

\inmodule QtCore Represents a handle to a signal-slot (or signal-functor) connection. More...

#include <qobjectdefs.h>

Collaboration diagram for QMetaObject::Connection:

Public Types
typedef void *Connection::*	RestrictedBool

Public Member Functions
	~Connection ()
	Destructor for QMetaObject::Connection.
	Connection ()
	Creates a Connection instance.
	Connection (const Connection &other)
	Create a copy of the handle to the other connection.
Connection &	operator= (const Connection &other)
	Move-assigns other to this object, and returns a reference.
	operator RestrictedBool () const
	Connection (Connection &&other) noexcept
	Move-constructs a Connection instance, making it point to the same object that o was pointing to.
void	swap (Connection &other) noexcept

Friends
class	QObject
class	QObjectPrivate
struct	QMetaObject

Detailed Description

\inmodule QtCore Represents a handle to a signal-slot (or signal-functor) connection.

It can be used to check if the connection is valid and to disconnect it using QObject::disconnect(). For a signal-functor connection without a context object, it is the only way to selectively disconnect that connection.

As Connection is just a handle, the underlying signal-slot connection is unaffected when Connection is destroyed or reassigned.

Definition at line 672 of file qobjectdefs.h.

Member Typedef Documentation

RestrictedBool

typedef void* Connection::* QMetaObject::Connection::RestrictedBool

Definition at line 689 of file qobjectdefs.h.

Constructor & Destructor Documentation

~Connection()

QMetaObject::Connection::~Connection

(

)

Destructor for QMetaObject::Connection.

Definition at line 5733 of file qobject.cpp.

Connection() [1/3]

QMetaObject::Connection::Connection

(

)

Creates a Connection instance.

Definition at line 5728 of file qobject.cpp.

Connection() [2/3]

QMetaObject::Connection::Connection

(

const Connection &

other

)

Create a copy of the handle to the other connection.

Definition at line 5703 of file qobject.cpp.

Connection() [3/3]

QMetaObject::Connection::Connection ( Connection && other )

inlinenoexcept

Move-constructs a Connection instance, making it point to the same object that o was pointing to.

Definition at line 693 of file qobjectdefs.h.

Member Function Documentation

operator RestrictedBool()

QMetaObject::Connection::operator RestrictedBool ( ) const

inline

Definition at line 690 of file qobjectdefs.h.

operator=()

QMetaObject::Connection & QMetaObject::Connection::operator=

(

const Connection &

other

)

Move-assigns other to this object, and returns a reference.

Assigns other to this connection and returns a reference to this connection.

Definition at line 5712 of file qobject.cpp.

swap()

void QMetaObject::Connection::swap ( Connection & other )

inlinenoexcept

Since

5.15 \memberswap{Connection instance}

Definition at line 695 of file qobjectdefs.h.

Friends And Related Symbol Documentation

QMetaObject

friend struct QMetaObject

friend

Definition at line 677 of file qobjectdefs.h.

QObject

friend class QObject

friend

Definition at line 675 of file qobjectdefs.h.

QObjectPrivate

friend class QObjectPrivate

friend

Definition at line 676 of file qobjectdefs.h.

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

• qtbase/src/corelib/kernel/qobjectdefs.h (d8b4eb1a1756ecfedcdd45511cc7f084f12379ad)
• qtbase/src/corelib/kernel/qmetaobject.cpp (4dcff4ed6d24e6aa061e145bb9de9ff93351a2b1)
• qtbase/src/corelib/kernel/qobject.cpp (b6a01d7d22583263a16242af604e74bbe694d766)