NodeId QML Type

Specifies a node by an identifier. 更多...

import 语句：	import QtOpcUa.
Since:	QtOpcUa 5.12

• 所有成员列表，包括继承成员

特性

• 标识符 : string
• ns : string

信号

• nodeChanged ()

详细描述

import QtOpcUa 5.13 as QtOpcUa
QtOpcUa.NodeId {
    identifier: "s=Example.Node"
    ns: "Example Namespace"
}
					

特性文档编制

标识符 : string

Identifer of the node. The identifier has to be given in one of the followig types.

类型	范例
Numeric	i=23
字符串	s=MyStringIdentifier
GUID	g=08081e75-8e5e-319b-954f-f3a7613dc29b
Opaque (base64)	b=UXQgZnR3IQ==

It is possible but not recommended to include the namespace index ns=X;s=... . In this case the given namespace index is internally stripped off the identifier and set to the namespace property.

ns : string

Namespace of the node identifier. The identifier can be the index as a number or the name as string. A string which can be converted to an integer is considered a namespace index.

信号文档编制

nodeChanged ()

Emitted when the underlying node has changed. This happens when the namespace or identifier has changed.

注意： 相应处理程序是 onNodeChanged .

内容

• 特性

• 信号

• 详细描述