This article contains information about modifying the registry.
Before you modify the registry, make sure to back it up and make sure that you
understand how to restore the registry if a problem occurs. For information
about how to back up, restore, and edit the registry, click the following
article number to view the article in the Microsoft Knowledge Base:
Description of the Microsoft Windows Registry
If you want the Visual C++ editor to treat
files as Visual C++ files, you must specify the file name extensions in the NCB Default C/C++ Extensions
key in Microsoft Visual Studio 2005, in Microsoft Visual Studio
.NET 2003, and in Microsoft Visual Studio .NET 2002. When the editor treats the
files as Visual C++ files, the files are colorized, and Microsoft IntelliSense
is established on the files. The following is the registry key that contains
For a file type to be treated as a Microsoft Interface Definition
Language (IDL) file, the file name extension must be specified in the NCB Default IDL Extensions
key. The following is the registry key that contains these
The following is an example of the values that this registry key
NCB Default C/C++ Extensions=".cpp;.cxx;.c;.cc;.h;.hh;.hxx;.hpp;.inl;.tlh;.tli;"
NCB Default IDL Extensions=".odl;.idl;.odh"
If you use Registry Editor incorrectly, you may cause serious
problems that may require you to reinstall your operating system. Microsoft
cannot guarantee that you can solve problems that result from using Registry
Editor incorrectly. Use Registry Editor at your own
If you want the Visual C++ editor to treat a file
type as a Visual C++ file, modify the value of the NCB Default C/C++ Extensions
key. If you want a file type to be treated as an IDL file, modify
the value of the NCB Default IDL Extensions
To modify the registry, follow these steps:
- Click Start, click Run,
type regedit, and then click OK.
- Locate the registry key that you want to modify.
- Right-click the key, click Modify, type
the value, and then click OK.
For additional information, visit the following Microsoft
Developer Network (MSDN) Web site: