how do you know it is general dll or com dll

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Question

how do you know it is general dll or com dll

Question Submitted By :: Ashis Nishanka

I also faced this Question!!

Rank

Answer Posted By

Re: how do you know it is general dll or com dll

Answer
# 1

COM Dll contails IUnknown interface but general DLL doesn't.

Is This Answer Correct ?

1 Yes

1 No

Bijender Singh

Re: how do you know it is general dll or com dll

Answer
# 2

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 ?

1 Yes

0 No

Chandrasekharreddy Siddamreddy

Re: how do you know it is general dll or com dll

Answer
# 3

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

Techy Break

Re: how do you know it is general dll or com dll

Answer
# 4

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

Sandeep Mishra

Question	Asked @	Answers
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