How can I check the windows version ?

Hello,
I tried this code that I found on the web without luck.
I thing it is not complete.
I would like to get the current system in str_system.
This is only for Windows NT no later versions....how do I have to check for XP, Vista or 7?
Please help. 500 points with a solution.
...still lerarning MFC....thanks.

Best regards,
Thomas

CString str_system;
OSVERSIONINFO osver;
osver.dwOSVersionInfoSize = sizeof(osver);
if (GetVersionEx(&osver))
{
   if (osver.dwPlatformId == VER_PLATFORM_WIN32s)
   {
     str_system="Win32 ";
   }

   else if (osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
   {

    if (osver.dwMinorVersion == 0 && (strchr(osver.szCSDVersion,'B') == NULL)&& (strchr(osver.szCSDVersion,'C') == NULL))str_system="Windows 95 ";
    if (osver.dwMinorVersion == 10 && (strchr(osver.szCSDVersion,'A')   == NULL))str_system="Windows 98 ";
    if (osver.dwMinorVersion == 90)str_system="Windows Millenium Edition ";
    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)str_system="Windows NT ";

   }

}

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Thomas StockbrueggerAsked:
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AndyAinscowFreelance programmer / ConsultantCommented:
Deepu AbrahamR & D Engineering ManagerCommented:
Here is a snippet
void GetWindowsOS()
{

     OSVERSIONINFOEX       versionInfo;
     memset( &versionInfo, 0, sizeof versionInfo );
     versionInfo.dwOSVersionInfoSize = sizeof versionInfo;
     GetVersionEx( &versionInfo );

     switch (versionInfo.dwPlatformId)
     {
        case VER_PLATFORM_WIN32_WINDOWS:
           if (versionInfo.dwMajorVersion == 4 && versionInfo.dwMinorVersion == 90)
			AfxMessageBox(L"WINDOWS ME");
           if (versionInfo.dwMajorVersion == 4 && versionInfo.dwMinorVersion == 10)
                        AfxMessageBox(L"WINDOWS 98");
           if (versionInfo.dwMajorVersion == 4 && versionInfo.dwMinorVersion == 0)
                        AfxMessageBox(L"WINDOWS 95");
           break;

        case VER_PLATFORM_WIN32_NT:
           if ( versionInfo.dwMajorVersion == 5 && versionInfo.dwMinorVersion == 1 )
                       AfxMessageBox(L"WINDOWS XP");
           else if ( versionInfo.dwMajorVersion == 5 && versionInfo.dwMinorVersion == 0 )
                       AfxMessageBox(L"WINDOWS 2000");
           else if ( versionInfo.dwMajorVersion == 6 && versionInfo.dwMinorVersion == 0 )
           {
		   if( versionInfo.wProductType == VER_NT_WORKSTATION)
				AfxMessageBox(L"WINDOWS VISTA");
                   else 
				AfxMessageBox(L"WINDOWS 2K8 SERVER");
      	   }
           else if ( versionInfo.dwMajorVersion == 6 && versionInfo.dwMinorVersion == 1 )
	   {
		   if( versionInfo.wProductType == VER_NT_WORKSTATION)
			AfxMessageBox(L"WINDOWS 7");
                   else 
			AfxMessageBox(L"WINDOWS 2K8 SERVER");
           }

           break;
       }//Switch ends here 
}

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Deepu AbrahamR & D Engineering ManagerCommented:
Deepu AbrahamR & D Engineering ManagerCommented:

http://msdn.microsoft.com/en-us/library/ms724832%28v=vs.85%29.aspx

Operating system      Version number
Windows 7                              6.1
Windows Server 2008 R2      6.1
Windows Server 2008        6.0
Windows Vista                      6.0
Windows Server 2003 R2      5.2
Windows Server 2003              5.2
Windows XP 64-Bit Edition      5.2
Windows XP                      5.1
Windows 2000                      5.0
Thomas StockbrueggerAuthor Commented:
Thank you for your help,
best regards, Thomas
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