How Can I Detect the Specific Windows 10 Version Across Multiple Platforms?

Detecting Windows 10 Version Across Platforms

Objective:

Determine the specific version of Windows 10 being used in a cross-platform codebase that targets Windows 7 and later.

Challenge:

Windows provides the IsWindows10OrGreater() function, but it is unavailable in older versions of Windows and may not accurately report the major OS version.

Solution:

Utilize the RtlGetVersion function within a cross-version compatible approach:

<code class="c++">typedef LONG NTSTATUS, *PNTSTATUS;
#define STATUS_SUCCESS (0x00000000)

typedef NTSTATUS (WINAPI* RtlGetVersionPtr)(PRTL_OSVERSIONINFOW);

RTL_OSVERSIONINFOW GetRealOSVersion() {
    HMODULE hMod = ::GetModuleHandleW(L"ntdll.dll");
    ... (Module handle and function lookup code) ...
        RTL_OSVERSIONINFOW rovi = { 0 };
        rovi.dwOSVersionInfoSize = sizeof(rovi);
        if ( STATUS_SUCCESS == fxPtr(&amp;rovi) ) {
            return rovi;
        }
    ... (Error handling code) ...
}</code>

This function accurately retrieves the true OS version on Windows 10, even in the absence of a manifest.

Alternative Approach:

For improved compatibility and future-proofing, consider specifying feature requirements rather than specific OS versions. This ensures that your code behaves consistently across different Windows versions with varying capabilities.

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