IpcServer Class

Register an application as a server able to access data on specific topics and update registered topics and update registered client applications.

Inheritance Hierarchy

Object
  VObject
    EventContext
      IpcServer

Namespace: VO
Assembly: VOGUIClasses (in VOGUIClasses.dll) Version: 2.19

Syntax

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 CLASS IpcServer INHERIT EventContext

public class IpcServer : EventContext

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The IpcServer type exposes the following members.

Constructors

	Name	Description
	IpcServer	Construct an IpcServer object.

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Methods

	Name	Description
	AddTopic	Add a topic to the list of topics supported by the server.
	DataRequest	Called whenever a client makes a request for data or when the IpcServer:UpdateTopic() is called.
	DataUpdate	Called whenever a client calls IpcClient:ChangeData().
	Destroy	Provide a method to de-instantiate an IpcServer object. (Overrides Destroy.)
	Dispatch
	ExecuteRequest	Called when the client calls IpcClient:Execute(). The server should take the appropriate action to execute the command locally.
	Override	This is a compatibility method that is no longer used or needed. (Inherited from EventContext.)
	UpdateTopic	Request that the server update a particular topic and item.

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Fields

	Name	Description
	oCargo	Cargo slot. (Inherited from VObject.)

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Remarks

In X#, the IPC... classes provides a means of implementing DDE conversations between DDE-compatible applications. DDE (Dynamic Data Exchange) is a type of interprocess communication (IPC) that uses shared memory to exchange data between applications. IPC is governed by a DDE management library, an underlying DLL in Windows. In such a conversation, there is a client and a server. The client requests data from the server about particular topics and items, and the server supplies the requested data. The applications, after requesting to be a client or server (or both), then exchange updates as soon as new data becomes available. These exchanges are not necessarily initiated by the user. Each IPC client must uniquely identify the server with which it wishes to communicate, and then request data updates. After the initial transfer, the client is informed of any changes to the transferred data in the server by means of an IpcDataUpdateEvent object.

Reference

VO Namespace