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 wBuildNumber = 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_BUILDNUMBER, VER_GREATER_EQUAL );
  23
  24         OSVERSIONINFOEXW osvi{ sizeof(OSVERSIONINFOEX) };
  25         osvi.dwMajorVersion = HIBYTE(wVersion);
  26         osvi.dwMinorVersion = LOBYTE(wVersion);
  27         osvi.dwBuildNumber = wBuildNumber;
  28
  29         return !!VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_BUILDNUMBER, dwlConditionMask);
  30 }
  31
  32 inline bool
  33 IsWin11_OrGreater()
  34 {
  35         return IsWinVer_OrGreater( 0x0a00, 0 );
  36 }
  37
  38 inline bool
  39 IsWin7_OrGreater()
  40 {
  41     return IsWinVer_OrGreater( _WIN32_WINNT_WIN7 );
  42 }
  43
  44 inline bool
  45 IsVista_OrGreater()
  46 {
  47     return IsWinVer_OrGreater( _WIN32_WINNT_VISTA );
  48 }