linking errors when using DAO

Question

0.00/5 (No votes)

See more:

Getting linking errors when iam using dao.Please give me some idea.

Error 3 error LNK2001: unresolved external symbol "public: __thiscall
CdbBSTR::CdbBSTR(wchar_t *)" (??0CdbBSTR@@QAE@PA_W@Z) C:\Planit-Solid\Solid\XDAL\XDAL_Jet.obj XDAL

Error 31 error LNK2001: unresolved external symbol "public: __thiscall CdbDBEngine::CdbDBEngine(int,int,wchar_t const *,wchar_t const *,wchar_t const *,long)" (??0CdbDBEngine@@QAE@HHPB_W00J@Z) C:\Planit-Solid\Solid\XDAL\XDAL_Jet.obj XDAL

Thanks in advance

Posted 7-Apr-15 23:09pm

imran.prdc

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)

Jochen Arndt · Answer 1 · 2015-04-08T01:49:00

The missing functions are part of very old DAO SDKs which has been shipped with Visual Studio versions 4 to 6 and must be installed manually (from MSDN Installing MFC Database Support[^]):

Quote:
If you want to install other DAO SDK components, such as the DAO SDK C++ classes, example files, or the Windows Help version of the DAO Help file, install the DAO SDK from the Visual C++ 6.0 CD-ROM.

My tip: Use the MFC CDaoDatabase[^] and CDaoRecordset classes instead.

Maciej Los · Answer 2 · 2015-04-08T08:58:00

Basically the error LNK2001: unresolved external symbol "..." is caused via linker. It means that the definition of function cannot be found.

How to resolve it?
Check references. Make sure you're using proper library version.
This error can often mean that some function has a declaration, but not a definition. Add a definition.

linking errors when using DAO

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0