Compiling flags used in porting from wince to win32

Today I was porting the code from WinCE platform to Win32 environment.
I used the following flag, since I am lazy and not sure which flag is correct for Win32:

 #ifdef WIN32 || __WIN32 || __WIN32__  
 #include <windows.h>                                                                           // Mod: 2007.11.05 S.Ota  
 #endif  

Things like that...