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how do you know it is general dll or com dll
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Answer / chandrasekharreddy siddamreddy
Open the dll in dependency walker application
(depends.exe). If the dll is having following functions
DLLRegisterServer
DLLUnRegisterServer
DLLCanUnloadNow
DLLGetClassObject
It is a COM DLL otherwise it is not.
| Is This Answer Correct ? | 13 Yes | 1 No |
Answer / virat sarswat
Checking above listed four function is a option. Another
one is just try to egister dll using "Regsvr32" if it's a
com dll it will register otherwise it will prompt error for
entry point.
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / techy break
second answer is correct, checking dll not means, checking
in source code.So IUnKnowns pointer checking no
possible.Simply check using dependancy walker as in 2
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / sandeep mishra
COM DLLs export above listed 4 functions and it's mandatory
for any DLL to be qualified as a COM DLL.
Where in regular DLLs we get a list of exported functions
which from client application we will invoke.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / bijender singh
COM Dll contails IUnknown interface but general DLL doesn't.
| Is This Answer Correct ? | 2 Yes | 4 No |
What is IUnknown? What methods are provided by IUnknown?
What is dcom?
C is aggregated by B, which in turn aggregated by A. Our client requested C. What will happen?
Can I use com components from .net programs?
Define and explain about COM?
How do we create dcom object in vb6?
Can you explain what is dcom?
Explain Futures of COM?
Define and explain COM?
Explain transaction atomicity?
Which namespace do the classes, allowing you to support COM functionality, are located?
can a COM interface be implemented by more than one COM class in the same COM component?
2 Answers Cap Gemini, Honeywell,
MFC 
