NDLI: Automatic programming of APL functions for screen management

Content Provider	ACM Digital Library
Author	Chua, Y. S. Winton, C. N.
Abstract	Defining and processing screen displays at present is typically a tedious and system dependent task. In this paper, four fundamental primitive-type functions are proposed for managing input and output for a display controlled via a user-accessible memory mapped screen organization. A utility is described in this context for relieving the programmer from the repetitive tasks of coding input/output instructions and the associated functions for data type checking. The programmer may define forms, protected text information, unprotected fields, and field attributes in a user-friendly manner. Necessary APL functions for performing the actual user/display interaction are generated either by the utility at the time the form is defined, or dynamically via a virtual memory management strategy. As a result, the programmer's efforts may be concentrated on the actual processing of information, minimizing the time needed to prepare a user-friendly interface. Details are supplied as they pertain to APLSV in the IBM 5120 environment.
Starting Page	177
Ending Page	186
Page Count	10
File Format	PDF
ISSN	01636006
DOI	10.1145/390005.801214
Journal	ACM SIGAPL APL Quote Quad (APLQ)
Volume Number	13
Issue Number	3
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1988-12-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article

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Automatic programming of APL functions for screen management