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
  10 #include <windows.h>
  11 #include <winbase.h>
  12 #include <stdio.h>
  13
  14 #ifdef WINELIB
  15 /* External declaration here because we don't want to depend on Wine's
  16    internal headers. */
  17 extern HINSTANCE MAIN_WinelibInit( int *argc, char *argv[] );
  18 #endif /* WINELIB */
  19
  20
  21 void
  22 show_last_error(void)
  23 {
  24   DWORD lasterr;
  25   LPTSTR buffer;
  26   BOOL result;
  27
  28   lasterr = GetLastError();
  29
  30   result = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
  31                          FORMAT_MESSAGE_FROM_SYSTEM |
  32                          FORMAT_MESSAGE_IGNORE_INSERTS,
  33                          NULL,
  34                          lasterr,
  35                          0,
  36                          (LPTSTR)&buffer,
  37                          0,
  38                          NULL);
  39
  40   if (result) {
  41     fprintf(stderr, "Win32 API error (%ld):\t%s", lasterr, buffer);
  42     LocalFree((HLOCAL)buffer);
  43   }
  44   else {
  45     fprintf(stderr, "Win32 API error (%ld)", lasterr);
  46   }
  47 }
  48
  49 int
  50 main(int argc, char ** argv)
  51 {
  52   BOOL result;
  53   OSVERSIONINFO oiv;
  54   HINSTANCE hinst;
  55
  56 #ifdef WINELIB
  57   if (!(hinst = MAIN_WinelibInit(&argc, argv))) return 0;
  58 #endif /* WINELIB */
  59
  60   /* FIXME: GetVersionEx() is a Win32 API call, so there should be a
  61      preliminary check to see if we're running bare-bones Windows3.xx
  62      (or even lower?). 19990916 mortene. */
  63
  64   oiv.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
  65   result = GetVersionEx(&oiv);
  66
  67   if (result == FALSE) {
  68     show_last_error();
  69   }
  70   else {
  71     char * platforms[] = {
  72       "Win32s on Windows 3.1",
  73       "Win32 on Windows 95 or Windows 98",
  74       "Win32 on Windows NT/Windows 2000",
  75       "unknown!"
  76     };
  77     int platformval = 3;
  78
  79     switch (oiv.dwPlatformId) {
  80     case VER_PLATFORM_WIN32s: platformval = 0; break;
  81     case VER_PLATFORM_WIN32_WINDOWS: platformval = 1; break;
  82     case VER_PLATFORM_WIN32_NT: platformval = 2; break;
  83     }
  84
  85     fprintf(stdout,
  86             "MajorVersion: %ld\nMinorVersion: %ld\nBuildNumber: 0x%lx\n"
  87             "Platform: %s\nCSDVersion: '%s'\n",
  88             oiv.dwMajorVersion, oiv.dwMinorVersion, oiv.dwBuildNumber,
  89             platforms[platformval], oiv.szCSDVersion);
  90   }
  91
  92   return 0;
  93 }