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Porting and Upgrading Programs 

Porting an application refers to opening it for the first time in Visual C++. Upgrading refers to opening a project from a previous version of Visual C++ in the current version.


An ActiveX control compiled with Visual C++ 6.0 when embedded in a dialog box in a project developed with Visual C++ 2005 may cause your program to assert at runtime. In this situation, recompile the ActiveX control using Visual C++ 2005. The assert will be in the file occcont.cpp, on the line in source: ASSERT(IsWindow(pTemp->m_hWnd)).

For more information, see What's New in Visual C++.

In This Section

Port from UNIX to Win32

Discusses options for migrating UNIX applications to Windows.

How to: Upgrade Wizard-Generated Managed Extensions for C++ Code

Discusses how you can upgrade wizard-generated code.

Managed Extensions for C++ Syntax Upgrade Checklist

Lists the syntactic differences between Managed Extensions for C++ and the new Visual C++ syntax for targeting the common language runtime.

How to: Upgrade Projects from Previous Versions of Visual C++

Discusses how to use projects created in previous versions of Visual C++.

C++/CLI Migration Primer

A detailed guide to upgrade your Managed Extensions for C++ syntax to use the new syntax (see New Language Features for more information on the new syntax).

See Also