Src/Win_VersionHelper.h

   1 /**
   2  * @file  Win_VersionHelper.h
   3  *
   4  * @brief Defines quick-and-dirty runtime Windows version checking.
   5
   6  * All we need in WinMerge is `IsWin7_OrGreater()`
   7  * But other possibilities (and slightly different implementation) can be seen in ...
   8  *              'C:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\VersionHelpers.h'
   9  *
  10  */
  11
  12 #pragma once
  13
  14 #include <windows.h>
  15
  16 inline bool
  17 IsWinVer_OrGreater(WORD wVersion, WORD wServicePack = 0)
  18 {
  19         DWORDLONG dwlConditionMask = 0;
  20         VER_SET_CONDITION( dwlConditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL );
  21         VER_SET_CONDITION( dwlConditionMask, VER_MINORVERSION, VER_GREATER_EQUAL );
  22         VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL );
  23
  24         OSVERSIONINFOEXW osvi;
  25         ::ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
  26         osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
  27         osvi.dwMajorVersion = HIBYTE(wVersion);
  28         osvi.dwMinorVersion = LOBYTE(wVersion);
  29         osvi.wServicePackMajor = wServicePack;
  30
  31         return !!VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, dwlConditionMask);
  32 }
  33
  34
  35 inline bool
  36 IsWin7_OrGreater()
  37 {
  38     return IsWinVer_OrGreater( _WIN32_WINNT_WIN7 );
  39 }
  40
  41 inline bool
  42 IsVista_OrGreater()
  43 {
  44     return IsWinVer_OrGreater( _WIN32_WINNT_VISTA );
  45 }