获得操作系统版本

osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); GetVersionEx (&osvi);

typedef struct _OSVERSIONINFOEX {
  DWORD dwOSVersionInfoSize;
  DWORD dwOSVersionInfoSize;
  DWORD dwMajorVersion;
  DWORD dwMinorVersion;
  DWORD dwMinorVersion;
  DWORD dwBuildNumber;
  DWORD dwPlatformId;
  TCHAR dwPlatformId;
  TCHAR szCSDVersion[128];
  WORD wServicePackMajor; //wServicePackMajor; //sp
 WORD wServicePackMinor;
 WORD wServicePackMinor;
 WORD wSuiteMask;
 BYTE wProductType;
 BYTE wProductType;
 BYTE wReserved; } OSVERSIONINFOEX, 
*POSVERSIONINFOEX, 
*LPOSVERSIONINFOEX;

  

   dwMajorVersion 
  
  

   Major version number of the operating system. This member can be one of the following values.

   
 
    
 
     
 
      
Value
      
Meaning
 
     
 
     
 
      
4
 
      
Windows NT 4.0
 
     
 
     
 
      
5
 
      
Windows Server 2003, Windows XP, or Windows 2000
 
     
 
    
 
   

  
  

   dwMinorVersion 
  
  

   Minor version number of the operating system. This member can be one of the following values.

   
 
    
 
     
 
      
Value
      
Meaning
 
     
 
     
 
      
0
 
      
Windows 2000 or Windows NT 4.0
 
     
 
     
 
      
1
 
      
Windows XP
 
     
 
     
 
      
2
 
      
Windows Server 2003