OS version?

GetVersionEx
Den findes i API\'en, med den får du det hele inclusive service packs

kan jeg få et eksempel?

void func ()
{
OSVERSIONINFO  VersionInformation;

    VersionInformation.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
    GetVersionEx(&VersionInformation);
}

hvor OSVERSIONINFO er erklæret således i winnt.h:
typedef struct _OSVERSIONINFO{ 
    DWORD dwOSVersionInfoSize;
    DWORD dwMajorVersion;
    DWORD dwMinorVersion;
    DWORD dwBuildNumber;
    DWORD dwPlatformId;
    TCHAR szCSDVersion[ 128 ];
} OSVERSIONINFO;

dwOSVersionInfoSize

Specifies the size, in bytes, of this data structure. Set this member to sizeof(OSVERSIONINFO) before calling the GetVersionEx function.

dwMajorVersion

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.

dwMinorVersion

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.

dwBuildNumber

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.

dwPlatformId

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

Value    Platform
VER_PLATFORM_WIN32s    Win32s on Windows 3.1.
VER_PLATFORM_WIN32_WINDOWS    Win32 on Windows 95.
VER_PLATFORM_WIN32_NT    Win32 on Windows NT.


szCSDVersion

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.

jeg vil stadig ha den viser om det er f.eks Windows NT 3.51, Windows2k eller WinXP

hvis dwMajorVersion er 3 og dwMinorVersion = 51 er det WinNt 3.51
og hvis dwMajorVersion er f.eks 5 og dwMinorVersion = 0 er det Win2k