Get Windows Version (C++.NET 2003 ONLY)

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Newbie Coder - 07 Mar 2007 12:46 GMT

C++.NET 2003 ONLY

Hi all,

I need to check to see that the user is using Windows 2000 or later on
program startup. If not, to disable one radiobutton

I have searched Google & all I get is C++ or earlier code, but nothing that
compiles in my version of C++.

There is a KBase article, which isn't any good and is here:

http://support.microsoft.com/kb/307393/EN-US/ but that causes an error due
to the MANAGED CODE needs to be set in Configuration Properties | General
(as I found out & reported to Microsoft)

But of course that isn't what I am looking for. I wrote a version in VB.NET
2003 & tried to convert it without success.

Any help would be great as I haven't used C++ for over 7 years now

Thanks in advance,

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Newbie Coder
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Anders Eriksson - 07 Mar 2007 14:41 GMT

> C++.NET 2003 ONLY
>
[quoted text clipped - 14 lines]
> But of course that isn't what I am looking for. I wrote a version in VB.NET
> 2003 & tried to convert it without success.

I'm guessing that you are using VC++ UNMANAGED. the you use the
GetVersionEx() to get windows version.

e.g.

bool IsWindowsXP()
{
    OSVERSIONINFO osvi;
    bool bIsWindowsXPorLater;

    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
    GetVersionEx (&osvi);
    bIsWindowsXPorLater =
        ( (osvi.dwMajorVersion > 5) ||
        ( (osvi.dwMajorVersion == 5) && (osvi.dwMinorVersion >= 1) ));

    return bIsWindowsXPorLater;
}

You find more info here:
http://msdn2.microsoft.com/en-us/library/ms724451.aspx

// Anders

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English is not my first, or second, language
so anything strange, or insulting, is due to
the translation.
Please correct me so I may improve my English!

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Anders Eriksson - 07 Mar 2007 14:59 GMT

>> I need to check to see that the user is using Windows 2000 or later on
>> program startup. If not, to disable one radiobutton
[quoted text clipped - 12 lines]
> return bIsWindowsXPorLater;
> }

Oops! I read your mail a bit fast... To check for 2000 and later you change
osvi.dwMinorVersion>=0

You might then want to change the function name ;-)

// Anders

Signature

English is not my first, or second, language
so anything strange, or insulting, is due to
the translation.
Please correct me so I may improve my English!

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Newbie Coder - 07 Mar 2007 20:06 GMT

Thank you for your replies Anders.

Actually Anders I am using managed code or at least I am using managed code
in my application.

So, surely I have to declare the structure, don't I?

Basically, I am using the DLLIMPORT Attribute so maybe I can declare the
GetVersionEx in that way. Is that correct?

Awaiting a reponse,

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Newbie Coder
(It's just a name)

> >> I need to check to see that the user is using Windows 2000 or later on
> >> program startup. If not, to disable one radiobutton
[quoted text clipped - 19 lines]
>
> // Anders

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Ben Voigt - 07 Mar 2007 22:27 GMT

> Thank you for your replies Anders.
>
[quoted text clipped - 6 lines]
> Basically, I am using the DLLIMPORT Attribute so maybe I can declare the
> GetVersionEx in that way. Is that correct?

From C++, you can just #include <windows.h> just like a native program.
Only C# has to mess with DllImport.

> Awaiting a reponse,
>
[quoted text clipped - 22 lines]
>>
>> // Anders

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Willy Denoyette [MVP] - 07 Mar 2007 23:43 GMT

> Thank you for your replies Anders.
>
[quoted text clipped - 7 lines]
>
> Awaiting a reponse,

No need to call into native code, the FCL is your friend, take a look at the
System.Diagnostics namespace class OperatingSystem.

Willy.

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Newbie Coder - 08 Mar 2007 11:01 GMT

This has now been resolved. Here's the code I used:

using namespace system;

bool Is2000OrLater()
{
OperatingSystem* osInfo = Environment::OSVersion;
PlatformID pID = osInfo->Platform;
switch(pID)
{
case PlatformID::Win32NT:
if (osInfo->Version->Major == 5 && osInfo->Version->Minor >= 0)
return true;
else
return false;
default:
return false;
}
}

Thanks for all your replies,

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Newbie Coder
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