Visual programming tool for developing software ap

专利名称：Visual programming tool for developing

software applications

发明人：Robert V. Rubin,Steven L. Sneddon申请号：US08/399880申请日：19950307公开号：US05862379A公开日：19990119

摘要：A visual programming method implemented on a computer having a displayscreen and an input device which a user employs to draw visual representations on thedisplay screen, including the steps of defining and supporting by computer implementedsteps a set of object classes including a linking object class; in response to input from theuser, selecting a first object class; in response to the user using the input device to draw afirst visual representation on the display screen, generating a source object, which is aninstance of the first object class and having a first set of events associated therewith; inresponse to input from the user, selecting a second object class; and in response to theuser 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 theuser using the input device to draw a third visual representation that connects the firstand second visual representations, generating a linking object, which is an instance of thelinking object class and has associated therewith a set of user selectable predefinedbehaviors, each of which is in the form of a set of commands that defines actions thatoccur to the destination object in response to an occurrence of one of the events of the

first set of events.

申请人：INTERNATIONAL BUSINESS MACHINES CORPORATION

代理机构：Kudirka & Jobse, LLP

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