<div>
Either you are redefining __NULL_IMPORT_DESCRIPTOR &nbsp;or it is defined once in a header file which is included in several places.<br />
<br />
As a good practice, you should protect your header files with<br />
<br />
#ifndef IDENTIFIER<br />
#define IDENTIFIER<br />
//contents of header file<br />
...<br />
#endif /*IDENTIFIER*/<br />
<br />
If your __NULL_IMPORT_DESCRIPTOR &nbsp;is a data structure or variable, declare it in one c/cc file and link from others by declaring it an extern variable.<br />
<br />
If this does not solve your problem, give us more details ...<br />
<br />
Where in project is __NULL_IMPORT_DESCRIPTOR &nbsp;found .... what do the declarations look like ... etc.<br />
<br />
Cheers!<br />
sunnycoder
</div>


Either you are redefining __NULL_IMPORT_DESCRIPTOR  or it is defined once in a header file which is included in several places.

As a good practice, you should protect your header files with

#ifndef IDENTIFIER
#define IDENTIFIER
//contents of header file
...
#endif /*IDENTIFIER*/

If your __NULL_IMPORT_DESCRIPTOR  is a data structure or variable, declare it in one c/cc file and link from others by declaring it an extern variable.

If this does not solve your problem, give us more details ...

Where in project is __NULL_IMPORT_DESCRIPTOR  found .... what do the declarations look like ... etc.

Cheers!
sunnycoder

<div>
More details about the error and possible reasons can be found here<br />
<a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/LNK4006.asp" rel="ugc">http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/LNK4006.asp</a><br />
<br />
Cheers!<br />
sunnycoder
</div>


More details about the error and possible reasons can be found here
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/LNK4006.asp [http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/LNK4006.asp]

Cheers!
sunnycoder

<div>
<div class="content wysiwyg-content">
I rearranged my projects and now I get the warning &quot;LNK4006: __NULL_IMPORT_DESCRIPTOR already defined in comctl32.lib(COMCTL32.dll)<wbr />; second definition ignored&quot; several times. How can I get rid of it?
</div>
</div>


I rearranged my projects and now I get the warning "LNK4006: __NULL_IMPORT_DESCRIPTOR already defined in comctl32.lib(COMCTL32.dll); second definition ignored" several times. How can I get rid of it?

__NULL_IMPORT_DESCRIPTOR already defined

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.