内容

• 公共函数
• 详细描述

Connection 类

( QMetaObject::Connection )

头：	#include <Connection>
qmake:	QT += core

• 所有成员列表，包括继承成员

公共函数

	Connection ()
	Connection (const Connection & other )
	Connection (Connection && o )
	~Connection ()
	operator bool () const
Connection &	operator= (const Connection & other )
Connection &	operator= (Connection && other )

详细描述

Represents a handle to a signal-slot connection. It can be used to disconnect that connection, or check if the connection was successful

另请参阅 QObject::disconnect ().

成员函数文档编制

Connection:: Connection ()

创建连接实例。

Connection:: Connection (const Connection & other )

构造副本为 other .

Connection:: Connection ( Connection && o )

Move-constructs a Connection instance, making it point to the same object that o 所指向的。

Connection:: ~Connection ()

析构函数为 QMetaObject::Connection .

Connection:: operator bool () const

返回 true 若连接有效。

连接有效若调用 QObject::connect 成功。连接无效若 QObject::connect was not able to find the signal or the slot, or if the arguments do not match.

Connection &Connection:: operator= (const Connection & other )

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

Connection &Connection:: operator= ( Connection && other )

移动赋值 other 到此对象，并返回引用。