Some of the C++ COM server dual interface routines are not detected by Excel.

oleg63 asked:

I have an MFC MDI application with the automation layer implemented as dual interface. So the the early and late binding clients are supported.
With the early binding clients as C#, etc. everything is fine, but late binding clients in this case the Excel, VBA report the "Run-time error '438'. Object doesn't this property or method.".
Looks like the late binding clients do not see some of the methods from COM interface.
Does enybody encountered this kind of problem?
And what could be the resolution.
Any kind of suggestions appreciated.
Thanks.

Tags: C++, COM

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