Re: Checking the existence of a method in an Interface

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On 22 апр, 13:33, gshetty <gshett...@xxxxxxxxx> wrote:
Is it possible to verify whether a method exists in a interface before
calling it? I call a method within an interface in a third party COM
Dll. But my application crashes when it is run with an older version
of the same Dll that does not contain the specific method within that
Interface..

You can do it by ITypeInfo describing this interface. Usually such
interfaces are dual ones, so you can use either GetIDsOfNames or
GetTypeInfo.

PS
To Anatoly and Igor: Look at type library of any MS product (Word,
Excel etc), and you will see "violation of the fundamental
principles". ;)
.

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