From: Damphyr <damphyr@...>
Date: 2003-07-26T08:21:38+09:00
Subject: Re: Quick way to find all drives in a windows box

Bill Kelly wrote:
> Here's one way:
> 
> # define the call:
> 
>>>require 'Win32API'
> 
> => true
> 
>>>GetLogicalDriveStrings = Win32API.new("kernel32", "GetLogicalDriveStrings", ['L', 'P'], 'L')
> 
> => #<Win32API:0x2ab0968>
> 
> # create a buffer to hold the result and execute the call:
> 
>>>buf = "\0" * 1024
>>>len = GetLogicalDriveStrings.call(buf.length, buf)
> 
> => 40
> # if successful, <len> is now the length of the null-terminated
> # drive names appended into the buffer.... (if failed, <len> will
> # be zero, or some size exceeding the length we passed in)
> 
> # looking at the raw data...
> 
>>>buf[0..len]
> 
> => "A:\\\000C:\\\000D:\\\000E:\\\000F:\\\000G:\\\000M:\\\000P:\\\000T:\\\000Z:\\\000\000"
> 
> # split drive strings into array:
> 
>>>buf[0..len].split("\0")
> 
> => ["A:\\", "C:\\", "D:\\", "E:\\", "F:\\", "G:\\", "M:\\", "P:\\", "T:\\", "Z:\\"]
> 
> 
> Hope this helps,

Well, yes and no :) I was hoping to avoid Win32API but I'll settle for 
that now. Thanks,
V.-


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