RPC HELP Tutorial Introduction

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Tutorial: Introduction

The major functions of a TRPCBroker component in a Delphi-based application are to:

• Connect to an RPC Broker VistA M Server system from a client.
• Execute remote procedure calls (RPCs) on that system.
• Return data results from RPC to the client.

This tutorial guides you through using a TRPCBroker component to perform each of these tasks, by having you create a Delphi-based application, step-by-step. This application will retrieve a list of terminal types from the VistA M Server, and display information about each terminal type.

After you have completed this tutorial, you should be able to:

• Include a TRPCBroker component in a Delphi-based application.
• Retrieve the end-user client workstation's designated VistA M Server and port to connect to.
• Establish a connection through the RPC Broker component to an RPC Broker VistA M Server.
• Create M routines that return data in the formats necessary to be called from RPCs.
• Create RPCs.
• Call RPCs from a Delphi-based application to retrieve data from a VistA M database.
• Pass parameters from your Delphi-based application to RPCs.