有关 Qt OPC UA 模块的更多信息，见 Qt OPC UA 模块文档编制。
| OPC UA ApplicationDescription | |
| OPC UA AttributeOperand type | |
| OPC UA authentication information | |
| Connects to a server | |
| OPC UA ElementOperand type | |
| OPC UA EndpointDescription | |
| Provides information about available endpoints on a server | |
| Defines an EventFilter for a monitored item | |
| OPC UA ContentFilterElement | |
| OPC UA LiteralOperand type | |
| Contains a text with associated locale | |
| Arguments for OpcUa method calls | |
| Calls a method on the server | |
| Represents a node on a server | |
| Specifies a node by an identifier | |
| Specifies an item to be read from the server | |
| Contains result data after reading from the server | |
| Specifies a relative node by a start node and a path | |
| Specifies a relative node path element | |
| Provides information about available servers | |
| OPC UA SimpleAttributeOperand type | |
| Code of an OPC UA function | |
| OPC UA ApplicationDescription | |
| Represents a value node from a server | |
| Specifies an item to be written to the server | |
| Contains result data after writing to the server |
