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OSVERSIONINFO info  Overview  Group

The OSVERSIONINFO data structure contains operating system version information. The information includes major and minor version numbers, a build number, a platform identifier, and descriptive text about the operating system. This structure is used with the GetVersionEx function.

typedef struct _OSVERSIONINFO{ 

    DWORD dwOSVersionInfoSize; 

    DWORD dwMajorVersion; 

    DWORD dwMinorVersion; 

    DWORD dwBuildNumber; 

    DWORD dwPlatformId; 

    TCHAR szCSDVersion[ 128 ]; 




Specifies the size, in bytes, of this data structure. Set this member to sizeof(OSVERSIONINFO) before calling the GetVersionEx function.
Identifies the major version number of the operating system. For example, for Windows NT version 3.51, the major version number is 3; and for Windows NT version 4.0, the major version number is 4.
Identifies the minor version number of the operating system. For example, for Windows NT version 3.51, the minor version number is 51; and for Windows NT version 4.0, the minor version number is 0.
Windows NT: Identifies the build number of the operating system.

Windows 95: Identifies the build number of the operating system in the low-order word. The high-order word contains the major and minor version numbers.

Identifies the operating system platform. This member can be one of the following values:




Win32s on Windows 3.1.


Win32 on Windows 95.


Win32 on Windows NT.

Windows NT: Contains 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.

Windows 95: Contains a null-terminated string that provides arbitrary additional information about the operating system.

See Also



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