Parameter type for a complex object in a COM-visible function (VB6)

StackOverflow https://stackoverflow.com/questions/861455

  •  21-08-2019
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Question

Should we use object or variant? What difference does it make?

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Solution

If you use Object, then clients must pass in something that supports IUnknown or IDispatch - in short the parameter must be an object. If you use Variant, then clients can pass in anything.

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