The options dialog for Visual Assist lets you override default directories used to locate header files. Directories are specified per platform.
![](/~/media/wholetomato/kb/specify-platforms-in-cc/custom.ashx?la=en&hash=D15C98870623B02935303978B22E5390B4D8DE46)
Create the following string value in the registry to expand or limit the available platforms to a specific set:
HKCU\Software\Whole Tomato\Visual Assist X\<IDE spec>\PlatformWhitelist = <set>
where <set> is a semicolon-separated list of platforms, without white space. For example:
Win32;x64;ARM;Durango;PS3;ORBIS;
To restore default behavior, delete the registry entry.
Visual Studio 2010 and newer
Default behavior limits platforms to Win32 and x64.
Visual Studio 2008 and earlier
Default behavior allows all platforms.