//判断操作系统版本
#include <windows.h>
/*++------------------------------------------------------------------------
Function:
IsWin9x
Modification History:
Jurassic 03/17/2003 Created.
--------------------------------------------------------------------------*/
bool
__stdcall
IsWin9x(
    void
    )
{
  OSVERSIONINFO VerInfo;
 bool bRet=false;
  VerInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 if ( GetVersionEx(&VerInfo))
 {
    if (VerInfo.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
    {
      bRet=true;
    }
 }
 return (bRet);
}
/*++------------------------------------------------------------------------
Function:
IsWinNt
Modification History:
Jurassic 03/17/2003 Created.
--------------------------------------------------------------------------*/
bool
__stdcall
IsWinNt(
    void
    )
{
  OSVERSIONINFO VerInfo;
 bool bRet=false;
  VerInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 if( GetVersionEx(&VerInfo))
 {
    if (VerInfo.dwPlatformId == VER_PLATFORM_WIN32_NT &&
 VerInfo.dwMajorVersion == 4)
    {
      bRet=true;
    }
 }
 return (bRet);
}
/*++------------------------------------------------------------------------
Function:
IsWin2k
Modification History:
Jurassic 03/17/2003 Created.
--------------------------------------------------------------------------*/
bool
__stdcall
IsWin2k(
    void
    )
{
  OSVERSIONINFO VerInfo;
 bool bRet=false;
  VerInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 if( GetVersionEx(&VerInfo))
 {
    if (VerInfo.dwPlatformId == VER_PLATFORM_WIN32_NT &&
 VerInfo.dwMajorVersion == 5 &&
 VerInfo.dwMinorVersion == 0)
    {
      bRet=true;
    }
 }
 return (bRet);
}
/*++------------------------------------------------------------------------
Function:
IsWinxp
Modification History:
Jurassic 03/17/2003 Created.
--------------------------------------------------------------------------*/
bool
_stdcall
IsWinXp(
    void
    )
{
  OSVERSIONINFO VerInfo;
 bool bRet=false;
  VerInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 if( GetVersionEx(&VerInfo))
 {
    if (VerInfo.dwPlatformId==VER_PLATFORM_WIN32_NT &&
 VerInfo.dwMajorVersion == 5 &&
 VerInfo.dwMinorVersion == 1)
    {
      bRet=true;
    }
 }
 return (bRet);
}