Thus, the task needs to make as few intelligent decisions as possible. The Wimp co-operates with the task in keeping the screen display correct by telling the task when something needs to be redrawn. The responsibility of drawing and maintaining these windows is shared between the application(s) and the Window Manager. These are used to implement a 'desktop' metaphor, where the windows represent documents on a desk. In this section, the words task, program and application should be treated as synonyms.Īn immediately recognisable feature of Wimp programs is their use of overlapping rectangular windows on the screen. Programs that run under the Wimp are often called tasks, because they are operating under a multi-tasking environment. The manager itself is usually referred to as the Wimp. The Window Manager is designed to simplify the task of producing programs to run under a WIMP (Windows, Icons, Menus and Pointer) environment. You will find it benefits both you and other programmers if you make all your applications run under the Window Manager (and in a consistent manner), since this will lead to a much richer RISC OS environment. This should make it easier for users to learn how to use your software, as they will already be familiar with the necessary techniques. This chapter also gives guidelines on how your applications should behave so that they are consistent with other RISC OS applications.
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