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When including atlwin.h from the Microsoft ATL libraries in Visual Studio 2013 building may result in numerous complier errors about undefined elements.

HMONITOR is not defined

This does not occur when building using VS2010.

As this is a standard MS header file the missing class errors do not seems to make sense.

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9
  • Just a note: this seems like a reasonable question, and it's one that can be answered. But posting a duplicate is not the way to go about it. If you can clean up the original question via editing, that would be great. That would "bump" it back up so it can get the rest of the re-open votes it needs. Commented May 13, 2014 at 20:23
  • I tried that and got jumped on and lost rep, so how do I work with the system here? Commented May 13, 2014 at 20:24
  • Err, what? How did you get jumped on and lose rep? That doesn't make any sense. Even if a suggested edit gets rejected, you won't lose any rep. Although looking at it more carefully, you did successfully edit that question. Then another user who reviewed your edit actually improved it, adding code formatting. See the revisions list here. So it looks like you've done what you are supposed to do, it may just take some time for it to get re-opened. It has 2 re-open votes now. Commented May 13, 2014 at 20:29
  • Thanks for taking the time to respond. I'll wait for it to reopen. Commented May 13, 2014 at 20:32
  • Please either reopen the other question or this one. Don't really care. Just know I spent a day and a half killing myself to fix this issue on my own and would like to help someone else avoid the same pain. Commented May 13, 2014 at 20:51

1 Answer 1

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As this is a very old legacy project the problem is with the targeted version of windows in the stdafx.h file

from MSDN

Visual C++ no longer supports targeting Windows 95, Windows 98, Windows ME, or Windows NT. If your WINVER or _WIN32_WINNT macros are assigned to one of these versions of Windows, you must modify the macros. When you upgrade a project that was created by using an earlier version of Visual C++, you may see compilation errors related to the WINVER or _WIN32_WINNT macros if they are assigned to a version of Windows that is no longer supported.

So, changing

#ifndef WINVER #define WINVER 0x0400 #endif

to

#ifndef WINVER #define WINVER 0x0500 #define _WIN32_WINNT 0x0500 #endif

corrects the build problem

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1 Comment

I ran across this as I had the issue moving from 2010 to 2015. Note that _WIN32_WINNT 0x0500 won't work in 2015 but #define _WIN32_WINNT _WIN32_WINNT_WINXP will. Thanks for your post.

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