HP 3000 Manuals

HP VPLUS/Windows Programmer's Guide

Components of VPLUS/Windows 

VPLUS/Windows enables a user to run a VPLUS application from a PC
connected to the HP 3000 through an HP OfficeShare Local Area Network
(LAN).

The primary VPLUS/Windows components are as follows:

 *  PC presentation server.

 *  HP 3000 application server and run-time library.

 *  Forms file translation utility.

 *  Application confirmation utility programs.

PC Presentation Server 

The PC presentation server performs the following major tasks:

 *  Connects the PC to an HP 3000 computer over an HP OfficeShare LAN and
    communicates with an HP 3000 VPLUS application.

 *  Performs all PC screen operations; only VPLUS/Windows messages and
    application data are transmitted between the
    HP 3000 and PC.

 *  Manages the following files on the PC:

    PC forms file       Contains the translated forms.

    Configuration file  Contains user preferences and application
                        configuration information.

    Help file           Contains specific help information for an
                        application form and fields within the form.  A
                        help file is associated with a specific forms
                        file.

Figure 1-1 shows the VPLUS/Windows application environment.


          Figure 1-1.  VPLUS/Windows Application Environment 

HP 3000 Application Server and Run-Time Library 

HP 3000 host components consist of the VPLUS/Windows application server
and the VPLUS/Windows run-time library.

The primary function of the HP 3000 application server is to start the
VPLUS application on the HP 3000.  When a user starts an application, the
PC presentation server starts the HP 3000 application server.  The
application server completes the PC connection request and terminates the
connection when a user exits an application.

VPLUS uses the VPLUS/Windows run-time library to communicate with the PC
when an application calls a VPLUS intrinsic.

Forms File Translation Utility 

In order to run a VPLUS application using VPLUS/Windows, you must
translate all of the HP 3000 VPLUS forms files for the application to
VPLUS/Windows PC forms files.  The presentation server uses these files
to control the PC display device.  The application uses the original
forms files on the HP 3000 to control the presentation server.

VPLUS/Windows provides a translation utility for translating forms files.
Chapter 2 provides information about using this utility.

Application Confirmation Utility Programs 

VPLUS/Windows provides the following utility programs to confirm
VPLUS/Windows applications:

 *  Forms file content verification utility.
 *  Version and forms verification utility.
 *  Diagnostic utility.

Refer to Chapter 5 for information about running these utilities.

MPE/iX 5.0 Documentation