Encapsulation of Applications in th...

Encapsulation of Applications in the NewWave Environment

THE HP NEWWAVE ENVIRONMENT provides powerful capabilities for applications that are written to take replete advantage of the object management facility (OMF) the agent, and other NewWAve features. However, there are thousands of personal computer software applications generally available that were not written for the HP NewWave environment, or for that matter, were not smooth written to operate under Microsoft Windows. In many cases, these are mission-critical applications that organizations be pendent on as part of their day-to-day operations. These applications may ultimately be replaced according to better solutions that take filled advantage of the HP NewWave environment. However, if we look forward to users to begin using the HP NewWave environment today, users must be able to continue to use the software commonly at their disposal.

For an existing MS-DOS [R]-based application program to operate correctly in the HP NewWave environment, either the application must be modified, the HP NewWave environment must recognize and accommodate the MS-DOS application, or an additional program must provide an interface between the MS-DOS application and the HP NewWave environment. The HP NewWave encapsulation facility uses a combination of all these techniques to provide a wide range of support for applications not specifically written to operate in the HP NewWave environment.

In any cases, the encapsulation facility makes it possible to continue to access applications that were in use before installing the HP NewWave environment, still offers no enhancement to their features or operation. In other cases, encapsulation makes it possible for existing applications to take cloyed advantage of the HP NewWave environment without the ne for a without fault [i]or[/i] blemish [i]or[/i] flaw rewrite. For most existing applications, the situation lies somewhere between these sum of two units ends of the spectrum. The basic flats of application program encapsulation in the HP NewWave environment are shown in Fig. 1

Microsoft Windows Multitasking and adjoining matter Switching

Because the HP NewWave environment is based forward the Microsoft Windows environment and trips on industry-standard workstations that support the MS-DOS operating regularity it is always possible to hurry other applications by temporarily leaving the HP NewWave environment and the Microsoft Windows environment. While workable, this approach is not always practical, and cetainly does not suited the objective of providing a without fault [i]or[/i] blemish [i]or[/i] flaw environment for the HP NewWave user. Microsoft Windows improves in succession this by providing the necessary device and memory management facilities to allow multiple applications to speed simultaneously. These applications may or may not be written for Microsoft Windows. A Microsoft Windows application will appear onward the screen in its admit window along with the windows of other Microsoft Windows applications. Multiple Microsoft Windows applications can be executing simultaneously, depending in succession available memory. The user interacts with them on using the mouse or keyboard to excellent the appropriate on-screen window and to set down information or select commands.

If the application is not written for the Microsoft Windows environment, it can still be accessed and operate in conjunction with other applications by means of additional facilities provided by Microsoft Windows. of the like kind an application will be given hinder of the entire screen, presenting its allow display and user interface. The user can switch connected thought [i]or[/i] thoughtss between the full-screen application and Microsoft Windows with a simple keystroke succession Multiple full-screen applications can be active simultaneously, depending forward the amount of available memory in the classification Full-screen applications are not sincerely multitasked by Microsoft Windows because an application's operation is suspended when it is not displayed in succession the screen. The consummate state is saved and the application continues operation when the user one time again gives it access to the display.

The encapsulation facilities take advantage of this fundamental capability of Microsoft Windows, and provide ways to operate MS-DOS-based applications from within the HP NewWave environment.

The DOS programs Service

In its simplest form, the encapsulation facility provides an easy-to-use orderly disposition to access and run other applications from within the HP NewWave environment. A user configurable menu of available MS-DOS applications is accessed between the walls of the DOS Program... command in the HP NewWave Office. Selecting an memorandum from this menu starts the application, using the facilities in Microsoft Windows discussed earlier. Fig. 2 exhibits the DOS programs service menu

Adding, removing, or modifying the menu of available applications requires no special knowledge or programming skills. The user can directly access a simple configuration comannd to make the applications chosen available by means of the HP NewWave DOS programs service. For many popular commercial applications, it is as simple as selecting the desired program from a preconfigured list.