programs/osversioncheck/osversioncheck.c

   1 /*
   2  * Use the GetVersionEx() Win32 API call to show information about
   3  * which version of Windows we're running (or which version of Windows
   4  * Wine believes it is masquerading as).
   5  *
   6  * Copyright 1999 by Morten Eriksen <mailto:mortene@sim.no>
   7  *
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include <windows.h>
  25 #include <winbase.h>
  26 #include <stdio.h>
  27
  28 void
  29 show_last_error(void)
  30 {
  31   DWORD lasterr;
  32   LPTSTR buffer;
  33   BOOL result;
  34
  35   lasterr = GetLastError();
  36
  37   result = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
  38                          FORMAT_MESSAGE_FROM_SYSTEM |
  39                          FORMAT_MESSAGE_IGNORE_INSERTS,
  40                          NULL,
  41                          lasterr,
  42                          0,
  43                          (LPTSTR)&buffer,
  44                          0,
  45                          NULL);
  46
  47   if (result) {
  48     fprintf(stderr, "Win32 API error (%ld):\t%s", lasterr, buffer);
  49     LocalFree((HLOCAL)buffer);
  50   }
  51   else {
  52     fprintf(stderr, "Win32 API error (%ld)", lasterr);
  53   }
  54 }
  55
  56 int
  57 main(int argc, char ** argv)
  58
  59 {
  60   BOOL result;
  61   OSVERSIONINFO oiv;
  62
  63   /* FIXME: GetVersionEx() is a Win32 API call, so there should be a
  64      preliminary check to see if we're running bare-bones Windows3.xx
  65      (or even lower?). 19990916 mortene. */
  66
  67   oiv.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
  68   result = GetVersionEx(&oiv);
  69
  70   if (result == FALSE) {
  71     show_last_error();
  72   }
  73   else {
  74     char * platforms[] = {
  75       "Win32s on Windows 3.1",
  76       "Win32 on Windows 95 or Windows 98",
  77       "Win32 on Windows NT/Windows 2000",
  78       "unknown!"
  79     };
  80     int platformval = 3;
  81
  82     switch (oiv.dwPlatformId) {
  83     case VER_PLATFORM_WIN32s: platformval = 0; break;
  84     case VER_PLATFORM_WIN32_WINDOWS: platformval = 1; break;
  85     case VER_PLATFORM_WIN32_NT: platformval = 2; break;
  86     }
  87
  88     fprintf(stdout,
  89             "MajorVersion: %ld\nMinorVersion: %ld\nBuildNumber: 0x%lx\n"
  90             "Platform: %s\nCSDVersion: '%s'\n",
  91             oiv.dwMajorVersion, oiv.dwMinorVersion, oiv.dwBuildNumber,
  92             platforms[platformval], oiv.szCSDVersion);
  93   }
  94
  95   return 0;
  96 }