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By polling the configuration of a workstation at run-time, a program can re-adjust its interface to take advantage of the peripheral devices actually present.
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Run-Time Configuration of Device Dependent Screens
By polling the configuration of a workstation at run-time, a program can re-
adjust its interface to take advantage of the peripheral devices actually present.
Many programs, and especially the newer user friendly packages on the
market today, require prior knowledge of what devices will be attached to a
workstation before the program is started. It is bothersome for a user to inform
the program of the presence of a device, and sometimes this is even impossible.
This problem can be solved by polling hardware posts to determine if
physical devices are present. (For example, an async port can be polled to see if
a mouse is present, and if not, screens that rely on function keys can be
generated.) Ignoring the actual configuration and putting up all interfaces is
imprac- tical due to user confusion and an absence to a full screen being
dedicated to an individual interface. With screens based on the actual device
configuration, the user interface is less confusing, and the program appears to
the user to be "custom- made" for a particular hardware configuration.