关于系统版本判断的一些知识

#include   <windows.h>   #include   <stdio.h>       BOOL   DisplaySystemVersion()   {      OSVERSIONINFOEX   osvi;      BOOL   bOsVersionInfoEx;       //Try calling GetVersionEx using the OSVERSIONINFOEX structure.   //If that fails, try using the OSVERSIONINFO structure.          ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));      osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);          if( !(bOsVersionInfoEx = GetVersionEx((OSVERSIONINFO*)&osvi)))      {   //If OSVERSIONINFOEX doesn't work, try OSVERSIONINFO.          osvi.dwOSVersionInfoSize   =   sizeof   (OSVERSIONINFO);          if(!GetVersionEx( ( OSVERSIONINFO*)&osvi))               return   FALSE;      }          switch(osvi.dwPlatformId)      {   //Tests for Windows NT product family.       case VER_PLATFORM_WIN32_NT :       //Test for the product.             if( osvi.dwMajorVersion <= 4 )            printf("Microsoft Windows NT ");         if( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 0 )            printf("Microsoft Windows 2000 ");             if( bOsVersionInfoEx )//Use information from GetVersionEx.         {     //Test for the workstation type.             if( osvi.wProductType == VER_NT_WORKSTATION )             {                if( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1 )                   printf("Microsoft Windows XP ");                if( osvi.wSuiteMask & VER_SUITE_PERSONAL )                   printf("Home Edition ");                else                   printf("Professional ");             }      //Test for the server type.             else if( osvi.wProductType == VER_NT_SERVER )             {                 if( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1)                    printf("Microsoft Windows .NET ");                 if( osvi.wSuiteMask & VER_SUITE_DATACENTER )                    printf("DataCenter Server ");                 else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )                         if( osvi.dwMajorVersion == 4 )                            printf("Advanced Server ");                         else                            printf("Enterprise   Server   "   );                         else if( osvi.wSuiteMask == VER_SUITE_BLADE )                                printf("Web Server ");                              else                                printf("Server ");              }         }         else       //Use the registry on early versions of Windows NT.         {             HKEY hKey;             char szProductType[80];             DWORD dwBufLen;                 RegOpenKeyEx(HKEY_LOCAL_MACHINE,                       "SYSTEM//CurrentControlSet//Control//ProductOptions",                       0,                       KEY_QUERY_VALUE,                       &hKey );             RegQueryValueEx( hKey,                           "ProductType",                           NULL,                           NULL,                           (LPBYTE)szProductType,                           &dwBufLen );             RegCloseKey( hKey );             if( lstrcmpi( "WINNT", szProductType) == 0 )                printf( "Professional" );             if( lstrcmpi( "LANMANNT", szProductType) == 0 )                printf( "Server ");             if( lstrcmpi( "SERVERNT", szProductType) == 0 )                printf( "Advanced Server" );          }       //Display version, service pack (if any), and build number.              if( osvi.dwMajorVersion <= 4 )          {             printf( "version %d.%d %s (Build %d)/n",                     osvi.dwMajorVersion,                  osvi.dwMinorVersion,                  osvi.szCSDVersion,                  osvi.dwBuildNumber & 0xFFFF);          }          else          {                printf("%s (Build %d)/n",                      osvi.szCSDVersion,                      osvi.dwBuildNumber & 0xFFFF);          }          break;       //Test for the Windows 95 product family.       case VER_PLATFORM_WIN32_WINDOWS :          if(osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 0)          {             printf( "Microsoft Windows 9 " );             if( osvi.szCSDVersion[1] == 'C' || osvi.szCSDVersion[1] == 'B' )                printf( " OSR2 " );          }                if(osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 10 )          {             printf ("Microsoft Windows 98");             if( osvi.szCSDVersion[1] == 'A' )                printf( "SE " );          }                if( osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 90 )          {             printf( "Microsoft Windows Millennium Edition" );          }            break;      }     return   TRUE;     }   

Operating system Version number dwMajorVersiondwMinorVersion Other

Windows7	6.1	6	1	OSVERIONINFOEX.wProductType == VER_NT_WORKSTATION
Windows Server2008R2	6.1	6	1	OSVERIONINFOEX.wProductType != VER_NT_WORKSTATION
Windows Server2008	6.0	6	0	OSVERIONINFOEX.wProductType != VER_NT_WORKSTATION
WindowsVista	6.0	6	0	OSVERIONINFOEX.wProductType == VER_NT_WORKSTATION
Windows Server2003 R2	5.2	5	2	GetSystemMetrics(SM_SERVERR2) != 0
Windows Server2003	5.2	5	2	GetSystemMetrics(SM_SERVERR2) == 0
WindowsXP	5.1	5	1	Not applicable
Windows2000	5.0	5	0	Not applicable

typedef struct _OSVERSIONINFO {  DWORD dwOSVersionInfoSize;  DWORD dwMajorVersion;  DWORD dwMinorVersion;  DWORD dwBuildNumber;  DWORD dwPlatformId;  TCHAR szCSDVersion[128];} OSVERSIONINFO;

dwOSVersionInfoSize

The size of this data structure, in bytes. Set this member to sizeof(OSVERSIONINFO).

dwMajorVersion

The major version number of the operating system. For more information, see Remarks.

dwMinorVersion

The minor version number of the operating system. For more information, see Remarks.

dwBuildNumber

The build number of the operating system.

dwPlatformId

The operating system platform. This member can be the following value.

Value Meaning

VER_PLATFORM_WIN32_NT2	The operating system is Windows Server2008, WindowsVista, Windows Server2003, WindowsXP, or Windows2000.

szCSDVersion

A null-terminated string, such as "Service Pack 3", that indicates the latest Service Pack installed on the system. If no Service Pack has been installed, the string is empty.

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

dwOSVersionInfoSize

The size of this data structure, in bytes. Set this member to sizeof(OSVERSIONINFOEX).

dwMajorVersion

The major version number of the operating system. For more information, see Remarks.

dwMinorVersion

The minor version number of the operating system. For more information, see Remarks.

dwBuildNumber

The build number of the operating system.

dwPlatformId

The operating system platform. This member can be VER_PLATFORM_WIN32_NT (2).

szCSDVersion

A null-terminated string, such as "Service Pack 3", that indicates the latest Service Pack installed on the system. If no Service Pack has been installed, the string is empty.

wServicePackMajor

The major version number of the latest Service Pack installed on the system. For example, for Service Pack 3, the major version number is 3. If no Service Pack has been installed, the value is zero.

wServicePackMinor

The minor version number of the latest Service Pack installed on the system. For example, for Service Pack 3, the minor version number is 0.

wSuiteMask

A bit mask that identifies the product suites available on the system. This member can be a combination of the following values.

Value Meaning

VER_SUITE_BACKOFFICE 0x00000004	Microsoft BackOffice components are installed.
VER_SUITE_BLADE 0x00000400	Windows Server2003, Web Edition is installed.
VER_SUITE_COMPUTE_SERVER 0x00004000	Windows Server2003, Compute Cluster Edition is installed.
VER_SUITE_DATACENTER 0x00000080	Windows Server2008 Datacenter, Windows Server2003, Datacenter Edition, or Windows2000 Datacenter Server is installed.
VER_SUITE_ENTERPRISE 0x00000002	Windows Server2008 Enterprise, Windows Server2003, Enterprise Edition, or Windows2000 Advanced Server is installed. Refer to the Remarks section for more information about this bit flag.
VER_SUITE_EMBEDDEDNT 0x00000040	WindowsXP Embedded is installed.
VER_SUITE_PERSONAL 0x00000200	WindowsVista Home Premium, WindowsVista Home Basic, or WindowsXP Home Edition is installed.
VER_SUITE_SINGLEUSERTS 0x00000100	Remote Desktop is supported, but only one interactive session is supported. This value is set unless the system is running in application server mode.
VER_SUITE_SMALLBUSINESS 0x00000001	Microsoft Small Business Server was once installed on the system, but may have been upgraded to another version of Windows. Refer to the Remarks section for more information about this bit flag.
VER_SUITE_SMALLBUSINESS_RESTRICTED 0x00000020	Microsoft Small Business Server is installed with the restrictive client license in force. Refer to the Remarks section for more information about this bit flag.
VER_SUITE_STORAGE_SERVER 0x00002000	Windows Storage Server2003 R2 or Windows Storage Server2003is installed.
VER_SUITE_TERMINAL 0x00000010	Terminal Services is installed. This value is always set. If VER_SUITE_TERMINAL is set but VER_SUITE_SINGLEUSERTS is not set, the system is running in application server mode.
VER_SUITE_WH_SERVER 0x00008000	Windows Home Server is installed.

wProductType

Any additional information about the system. This member can be one of the following values.

Value Meaning

VER_NT_DOMAIN_CONTROLLER 0x0000002	The system is a domain controller and the operating system is Windows Server2008, Windows Server2003, or Windows2000 Server.
VER_NT_SERVER 0x0000003	The operating system is Windows Server2008, Windows Server2003, or Windows2000 Server. Note that a server that is also a domain controller is reported as VER_NT_DOMAIN_CONTROLLER, not VER_NT_SERVER.
VER_NT_WORKSTATION 0x0000001	The operating system is WindowsVista, WindowsXP Professional, WindowsXP Home Edition, or Windows2000 Professional.

wReserved

Reserved for future use.