Two Quick Questions

[Paul Dwyer]

1. How can I detect whether the OS is NT4 or Win2k (My software uses certain netapi32.dll functions so it won't run on 95/98)

2. There are Vars like $CRLF and $Tab, these are not listed in the help file. Are they listed somewhere? are there others? I think someone used one for quotes etc

Thanks

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Paul Dwyer
Network Engineer
Aussie in Tokyo
(Paul282 at VB-World)

[Eric Pearson]

1) Use the GetVersionEx API.

2)

Equate   Character       Mnemonic
------   ---------       --------
$NUL     CHR$(0)         NULL
$BEL     CHR$(7)         Bell
$BS      CHR$(8)         Back Space
$TAB     CHR$(9)         Horizontal Tab
$LF      CHR$(10)        Line Feed
$VT      CHR$(11)        Vertical Tab
$FF      CHR$(12)        Form Feed
$CR      CHR$(13)        Carriage Return
$CRLF    CHR$(13,10)     Carriage Return & Line Feed
$EOF     CHR$(26)        End-of-File
$ESC     CHR$(27)        Escape
$DQ      CHR$(34)        Double-Quote

And of course you can define your own. I often use $SPACE and several others.

-- Eric


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Perfect Sync Development Tools
Perfect Sync Web Site
Contact Us: mailto:[email protected][email protected]</A>

[This message has been edited by Eric Pearson (edited March 08, 2001).]

[Florent Heyworth]

Hi Paul

to answer question 1:

#COMPILE EXE
#INCLUDE "win32api.inc"
 
FUNCTION IsNt4()  AS LONG
    DIM tOsVersion AS OSVERSIONINFO
 
    tOsVersion.dwOSVersionInfoSize = SIZEOF(tOsVersion)
    IF ISTRUE(GetVersionEx(tOsVersion)) THEN
        FUNCTION = ((tOsVersion.dwPlatformId = %VER_PLATFORM_WIN32_NT) _
                    AND (tOsVersion.dwMajorVersion = 4))
    END IF
END FUNCTION
     
FUNCTION IsNt5()  AS LONG
    DIM tOsVersion AS OSVERSIONINFO
 
    tOsVersion.dwOSVersionInfoSize = SIZEOF(tOsVersion)
    IF ISTRUE(GetVersionEx(tOsVersion)) THEN
        FUNCTION = ((tOsVersion.dwPlatformId = %VER_PLATFORM_WIN32_NT) _
                    AND (tOsVersion.dwMajorVersion = 5))
    END IF
END FUNCTION
 
FUNCTION PBMAIN
    IF IsNt4() THEN
        MSGBOX "IsNt4()"
    END IF
    IF IsNt5() THEN
        MSGBOX "IstNt5()
    END IF
END FUNCTION

Cheers

Florent

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[Wayne Diamond]

In regards to GetVersionEx(), are these returns correct?
3 = Windows 95/98/ME
4 = Windows NT
5 = Windows 2000 and Windows XP ("Whistler")


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[Eric Pearson]

Wayne --

No, it's more complicated than that.

            Platform  Major  Minor
            --------  -----  -----
Windows 95      1       4     0-9
Windows 98      1       4     10+
Windows NT4     2       4     0
Windows 2000    2       5     0
Windows ME      1       5     0

XP has not been released yet, so the final values are not known.

-- Eric


------------------
Perfect Sync Development Tools
Perfect Sync Web Site
Contact Us: mailto:[email protected][email protected]</A>

[This message has been edited by Eric Pearson (edited March 08, 2001).]

[Paul Dwyer]

Wow,

I go and have dinner, come back with a glass of Aussie Red and I have 4 replies!

Eric, Your a legend, I'd buy you a beer if your were closer, thanks.

Florent, That looks like what I need, and I can see from Erics next next post the platform version is what I need to test for too.

Thank you all.



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Paul Dwyer
Network Engineer
Aussie in Tokyo
(Paul282 at VB-World)

[Tom Hanlin]

Checking the Windows version is probably fully adequate, in this case.

More generally, when you're using a function that may not be available
in all versions of Windows, the ideal technique is to use dynamic loading
via LoadLibrary, which lets you be sure whether the function is available
locally. This is because newer API functionality is often not strongly
tied to the OS version, and may be available on older machines that, say,
have the latest version of MS Internet Explorer installed. Dynamic DLL
loading allows you to provide full functionality to everyone rather than
making guesses about the available APIs.

------------------
Tom Hanlin
PowerBASIC Staff

[Paul Dwyer]

Thanks Tom,

I'll look into that too.

For this project though it is not necessary, I just want to detect the OS and if it's not an NT type then disply a message and exit. 95/98/me is not supportable for this project as it involves modifying Domain users on a PDC etc.

Thanks.

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Paul Dwyer
Network Engineer
Aussie in Tokyo