sdk/include/reactos/compat_undoc.h

   1 #ifndef COMPAT_UNDOC_H
   2 #define COMPAT_UNDOC_H
   3
   4
   5 typedef struct _ReactOS_ShimData
   6 {
   7     DWORD dwReserved1[130];
   8     DWORD dwSize;
   9     DWORD dwMagic;
  10     DWORD dwReserved2[242];
  11     DWORD dwRosProcessCompatVersion;
  12 } ReactOS_ShimData;
  13
  14
  15 #define REACTOS_SHIMDATA_MAGIC  0xAC0DEDAB
  16 #define REACTOS_COMPATVERSION_UNINITIALIZED 0xfffffffe
  17 #define REACTOS_COMPATVERSION_IGNOREMANIFEST 0xffffffff
  18
  19 // Returns values in the form of _WIN32_WINNT_VISTA, _WIN32_WINNT_WIN7 etc
  20 static
  21 inline
  22 DWORD RosGetProcessCompatVersion(VOID)
  23 {
  24     static DWORD g_CompatVersion = REACTOS_COMPATVERSION_UNINITIALIZED;
  25     if (g_CompatVersion == REACTOS_COMPATVERSION_UNINITIALIZED)
  26     {
  27         ReactOS_ShimData* pShimData = (ReactOS_ShimData*)NtCurrentPeb()->pShimData;
  28         if (pShimData && pShimData->dwMagic == REACTOS_SHIMDATA_MAGIC &&
  29             pShimData->dwSize == sizeof(ReactOS_ShimData))
  30         {
  31             g_CompatVersion = pShimData->dwRosProcessCompatVersion;
  32         }
  33     }
  34     return g_CompatVersion < REACTOS_COMPATVERSION_UNINITIALIZED ? g_CompatVersion : 0;
  35 }
  36
  37
  38 #endif // COMPAT_UNDOC_H