CWinAppEx::WriteSectionInt
Visual Studio 2012
Writes numeric data to the registry.
BOOL WriteSectionInt( LPCTSTR lpszSubSection, LPCTSTR lpszEntry, int nValue );
The lpszSubSection parameter is not an absolute path for a registry entry. It is a relative path that is appended to the default registry key for your application. To get or set the default registry key, use the methods CWinAppEx::GetRegistryBase and CWinAppEx::SetRegistryBase respectively.
If the key specified by lpszEntry does not exist, this method will create it.