WindowsRedistributableValidation.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
struct VersionInfo
{
    constexpr VersionInfo() = default;
    
    constexpr VersionInfo(unsigned long InMajor, unsigned long InMinor, unsigned long InBld, unsigned long InRbld)
        : Major(InMajor)
        , Minor(InMinor)
        , Bld(InBld)
        , Rbld(InRbld)
    {}
 
    constexpr VersionInfo(unsigned long long InVersion)
        : Major((InVersion >> 48) & 0xffff)
        , Minor((InVersion >> 32) & 0xffff)
        , Bld((InVersion >> 16) & 0xffff)
        , Rbld((InVersion >> 0) & 0xffff)
    { }
 
    unsigned long Major = 0;
    unsigned long Minor = 0;
    unsigned long Bld = 0;
    unsigned long Rbld = 0;
};
 
// This minimum should match the version installed by
// Engine/Extras/Redist/en-us/vc_redist.x64.exe
inline constexpr VersionInfo MinRedistVersion = { 14, 44, 35211, 0 };
 
inline bool IsVersionValid(const VersionInfo& Version, const VersionInfo& MinVersion)
{
    if (Version.Major > MinVersion.Major) return true;
    if (Version.Major == MinVersion.Major && Version.Minor > MinVersion.Minor) return true;
    if (Version.Major == MinVersion.Major && Version.Minor == MinVersion.Minor && Version.Bld > MinVersion.Bld) return true;
    if (Version.Major == MinVersion.Major && Version.Minor == MinVersion.Minor && Version.Bld == MinVersion.Bld && Version.Rbld >= MinVersion.Rbld) return true;
    return false;
}