Forum: Ruby Re: Oddity with Win32API, RegQueryValueEx

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Berger, Daniel (Guest)
on 2006-05-15 18:39
(Received via mailing list)
> >From: Daniel B. <removed_email_address@domain.invalid>
> >I noticed something curious when using the RegQueryValueEx()
> >#include <windows.h>
> >    HKEY hk;
> >       rv = RegQueryValueEx(hk, val, NULL, NULL, buf, &size);
> >
> >RegCloseKey = Win32API.new('advapi32', 'RegCloseKey', 'L', 'L')
> >
> >if RegOpenKeyEx.call(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, hk) == 0
> >    hk   = hk.unpack('L').first
> >    buf  = 0.chr * 1024
> >    size = 0.chr * 4
>
> should be
>       size = [buf.length].pack('L')

Ah, ok.  I thought it would just set the size regardless.

Thanks,

Dan


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