Release 10.1A: OpenEdge Development:
Programming Interfaces

> ## Converting COM to Progress data types

> A COM object passes data to Progress in a Variant structure for COM object properties (get), method output parameters, method return values, and event input parameters. A Variant is a self-describing data type whose structure contains both the type of data and the data itself. Progress accesses the information in this structure to convert COM data types to Progress data types.

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