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Is it safe to cast a IDispatch* into an IUnknown*, without using QueryInterface, for interprocess COM objects?

score 1688 · Answer 1 · 2015-06-10 13:46:42

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Is it safe to cast a IDispatch* into an IUnknown*, without using QueryInterface, for interprocess COM objects?

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TechQA.

List Question

Is it safe to cast a IDispatch* into an IUnknown*, without using QueryInterface, for interprocess COM objects?

How can I do following thing through any code,script

Invoke COM object in a "PostMessage" manner

Print/save Excel (.xlsx) sheet to PDF using R

How to tell if a library is COM or DCOM?

DCOM CoCreateInstanceEx 0x80040155

Alternative to Application.DelayInitialize for Delphi 7 Service?

QueryInterface returns E_ACCESSDANIED general access denied error after successfull CoCreateInstanceEx

C# DCOM event binding Unathorized Execption

How can I log [D]COM calls into a module?

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