Building project options 1

You may well find that this will not work as VC 9 may well add code or components that cannot be used in a VC 6 project. It may be simpler to rebuild your library in VC 6.

[no name] 21-Jan-11 9:46am

The project was upgraded from Visual Studio 7.1 to 9.0. When i used downgrade utility to get Visual Studio 6.0 project from 7.1, i got many errors in code. Example: CAutoPtr and CAutoPtrList classes.

Richard MacCutchan 21-Jan-11 11:00am

As you see that option does not work. You need to build your complete project in the same version of Visual Studio. In reality the version of VS is irrelevant, but you must use the same compiler and libraries.

[no name] 21-Jan-11 9:39am

When i build project BaseClasses in Visual Studio 6.0 and use it Visual Studio 9.0 there are unresolved externals. If i build all in Visual Studio 9.0 there are no unresolved externals. But i have error swapning mt.exe.

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Nish Nishant · Answer 1 · 2011-01-22T13:20:00

Solution 2

Adding to T2102

VC++ 2010 is far more standards compliant than VC++ 6 was, so you will probably need to do quite a bit of tweaking of your code. It all depends on how you wrote your code in VC++ 6.

Posted 22-Jan-11 13:20pm

Nish Nishant

T2102 · Answer 2 · 2011-01-22T13:16:00

If you are not using MFC, it usually is not hard to upgrade from VS 6.0 to VS 2010. Just backup first and do incremental version upgrades if you can. That way it is easier to find documentation on the differences between versions. Going from VS2008 to VS2010, note that VS removes your compiler's include, lib, etc. directories. You might want to copy these to the LIB and INCLUDE environment variable, as well as add your add-in directory to the PATH environment variable.