This is for my own:
When doing porting, i.e. from WinCE to Win32, some Macro flags will not be found. When this happens:
1. Find the .vcproj file
2. in the file, find "InheritedPropertySheets"
3. open those .vsprops files indicated in step 2.
4. modify those suspecious flags in the files found step 3.
