Gets version information about the currently running operating system.
NTSTATUS RtlGetVersion( _Out_ PRTL_OSVERSIONINFOW lpVersionInformation );
Pointer to either a RTL_OSVERSIONINFOW structure or a RTL_OSVERSIONINFOEXW structure that contains the version information about the currently running operating system. A caller specifies which input structure is used by setting the dwOSVersionInfoSize member of the structure to the size in bytes of the structure that is used.
RtlGetVersion is the equivalent of the GetVersionEx function in the Windows SDK. See the example in the Windows SDK that shows how to get the system version.
When using RtlGetVersion to determine whether a particular version of the operating system is running, a caller should check for version numbers that are greater than or equal to the required version number. This ensures that a version test succeeds for later versions of Windows.
Because operating system features can be added in a redistributable DLL, checking only the major and minor version numbers is not the most reliable way to verify the presence of a specific system feature. A driver should use RtlVerifyVersionInfo to test for the presence of a specific system feature.
|Minimum supported client
||Windows 2000 Professional [desktop apps only]
|Minimum supported server
||Windows 2000 Server [desktop apps only]