error LNK2020: unresolved token (0A000017) IID_IStorage and error LNK2001: unresolved external symbol IID_IStorage

Question

4.00/5 (1 vote)

See more:

Hello,
First, I created a storage file using StgCreateDocfile() then added some files in it. Then i tried to open this storage file using

MIDL

hr = StgOpenStorageEx(L"E:\\Storage.stg",STGM_READ|STGM_SHARE_DENY_WRITE,STGFMT_DOCFILE,0, NULL, 0,IID_IStorage,(void**)&pStorage);

which worked fine when i did it win32 console application.

But when i tried it add the same code in Windows form application project, adding a c++ class to project and then my code to that class, it generate a runtime error

VB

1>Recovery.obj : error LNK2020: unresolved token (0A000017) IID_IStorage
1>Recovery.obj : error LNK2001: unresolved external symbol IID_IStorage

whats the problem with IID_IStorage in newly created class.

Do i need to do something with Linker properties in project setting?

Posted 23-Apr-11 3:40am

MartinTaylor

Updated 23-Apr-11 4:09am

v2

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Nish Nishant · Answer 1 · 2011-04-23T04:21:00

Solution 1

It seems you are missing a lib file. Try adding Uuid.lib to your linker libraries.

Posted 23-Apr-11 4:21am

Nish Nishant

Comments

MartinTaylor 23-Apr-11 10:28am

As you mentioned , i have added Uuid.lib in Properties->linker->Input->additional dependencies..
But i didnt worked....

Richard MacCutchan · Answer 2 · 2011-04-23T05:20:00

Solution 2

I think you may need to include Objidl.h in your source code as described here[^] in MSDN.

Posted 23-Apr-11 5:20am

Richard MacCutchan

Comments

MartinTaylor 24-Apr-11 3:44am

Objidl.h is already added... i wont be getting this error if i would have missed to include Objidl.h...
My problem is :- my code worked fine in windows console application project, but in windows form application as project type, i created a c++ class and added same code in it..but seems to have some problem for IID_IStorage parameter in "StgOpenStorageEx()" function which is leading to LNK 2020 and 2001 error..