User's Guide


Appendix B. Calling external functions using Smalltalk

As you learned in Accessing external functions, VisualAge supports calling external functions by using objects called platform functions. A platform function (an instance of class PlatformFunction) represents a function outside the VisualAge environment. This chapter covers how to call external functions using IBM Smalltalk instead of visual parts.

Generally, the process of calling an external function from IBM Smalltalk involves the following steps:

IBM Smalltalk provides classes that enable you to perform each of these tasks.


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