76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
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#include "private.h"
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#include "proj.h"
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/*----------------------------------------------------------
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Purpose: Returns TRUE/FALSE if the platform is the given OS_ value.
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*/
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STDAPI_(BOOL) staticIsOS(DWORD dwOS)
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{
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BOOL bRet;
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static OSVERSIONINFOA s_osvi;
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static BOOL s_bVersionCached = FALSE;
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if (!s_bVersionCached)
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{
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s_bVersionCached = TRUE;
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s_osvi.dwOSVersionInfoSize = sizeof(s_osvi);
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GetVersionExA(&s_osvi);
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}
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switch (dwOS)
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{
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case OS_WINDOWS:
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bRet = (VER_PLATFORM_WIN32_WINDOWS == s_osvi.dwPlatformId);
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break;
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case OS_NT:
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#ifndef UNIX
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bRet = (VER_PLATFORM_WIN32_NT == s_osvi.dwPlatformId);
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#else
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bRet = ((VER_PLATFORM_WIN32_NT == s_osvi.dwPlatformId) ||
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(VER_PLATFORM_WIN32_UNIX == s_osvi.dwPlatformId));
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#endif
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break;
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case OS_WIN95:
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bRet = (VER_PLATFORM_WIN32_WINDOWS == s_osvi.dwPlatformId &&
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s_osvi.dwMajorVersion >= 4);
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break;
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case OS_MEMPHIS:
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bRet = (VER_PLATFORM_WIN32_WINDOWS == s_osvi.dwPlatformId &&
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(s_osvi.dwMajorVersion > 4 ||
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s_osvi.dwMajorVersion == 4 && s_osvi.dwMinorVersion >= 10));
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break;
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case OS_MEMPHIS_GOLD:
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bRet = (VER_PLATFORM_WIN32_WINDOWS == s_osvi.dwPlatformId &&
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s_osvi.dwMajorVersion == 4 && s_osvi.dwMinorVersion == 10 &&
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LOWORD(s_osvi.dwBuildNumber) == 1998);
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break;
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case OS_NT4:
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#ifndef UNIX
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bRet = (VER_PLATFORM_WIN32_NT == s_osvi.dwPlatformId &&
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#else
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bRet = ((VER_PLATFORM_WIN32_NT == s_osvi.dwPlatformId ||
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(VER_PLATFORM_WIN32_UNIX == s_osvi.dwPlatformId)) &&
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#endif
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s_osvi.dwMajorVersion >= 4);
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break;
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case OS_NT5:
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bRet = (VER_PLATFORM_WIN32_NT == s_osvi.dwPlatformId &&
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s_osvi.dwMajorVersion >= 5);
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break;
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default:
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bRet = FALSE;
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break;
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}
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return bRet;
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}
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