Visual programming tool for developing software applications

Details Visual programming tool for developing software applications Visual programming tool for developing software applications

1995-03-07

1999-01-19

Trammell, James P.

G06F 945

Patent

active

058623795

ABSTRACT:
A visual programming method implemented on a computer having a display screen and an input device which a user employs to draw visual representations on the display screen, including the steps of defining and supporting by computer implemented steps a set of object classes including a linking object class; in response to input from the user, selecting a first object class; in response to the user using the input device to draw a first visual representation on the display screen, generating a source object, which is an instance of the first object class and having a first set of events associated therewith; in response to input from the user, selecting a second object class; and in response to the user using the input device to draw a second visual representation on the display screen, generating a destination object, which is an instance of the second object class; in response to input from the user, selecting the linking object class; and in response to the user using the input device to draw a third visual representation that connects the first and second visual representations, generating a linking object, which is an instance of the linking object class and has associated therewith a set of user selectable predefined behaviors, each of which is in the form of a set of commands that defines actions that occur to the destination object in response to an occurrence of one of the events of the first set of events.

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