Location To Store Application Data

private const string MY_FILE_DIRECTORY_TO_USE		Environment::GetFolderPath(Environment::SpecialFolder::ApplicationData) + "\\" + Application::CompanyName + "\\" + Application::ProductName + "\\"

Windows 7 path from using the above:

C:\Users\MyUserName\AppData\Roaming\Company Name\App Name

N.B. SpecialFolder::CommonApplicationData is not the same as ApplicationData.  Non-Admin users and applications running as a non admin user do not have permission to write to the CommonApplicationData folder, because that folder does not belong to specific users.  If your application uses CommonApplicationData you will find that it is unable to write to it under Windows 8 and possbily Windows 7. Use ApplicationData instead.