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DiskFreeSpace

Posted on 2001-08-03
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Last Modified: 2011-10-03
How do i get the free space of a server on the network?
(It demands a password)

Second ,  i saw many times a $ sign after a name of a variable , what is it for?
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Question by:itzikb
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Expert Comment

by:Dave_Greene
ID: 6350613
a $ sign after the name hard sets the variable to a string

Dim x

x$ = "This is a string"

So essentially, x was dimmed as a variant.  Then forcing it to become a string data type.  There are others for other datatypes, but I'd have to look them up... Some people use them for no apparent reason...

Dim x as string

x$ = "This is a string"

"This is stupid"
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Expert Comment

by:andysalih
ID: 6350621
this will get all the information you require, but im note sure about the password side,

there will be full source code including in file.

download from

http://www.planetsourcecode.com/xq/ASP/txtCodeId.25033/lngWId.1/qx/vb/scripts/ShowCode.htm

also like prev stated

$ defines var as string

visual basic = dim var as string

basic or others = var$="anything"

denotes var can store numbers or words "string"



hope this helps

Andy
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andysalih earned 100 total points
ID: 6350626
or you could use this code, you will need to encorperate the password side in yourself.

General Declarations of Module:
'Example
'Cur_X = DiskFree("C:")
'You can use Str_Z = Format(Cur_X,"#,0")
'     to put the commas in (eg. 1,234,567)
'if Cur_X = 0 then get DiskFree failed.


Declare Function GetDiskFreeSpace_FAT16 Lib "kernel32" Alias "GetDiskFreeSpaceA" (ByVal lpRootPathName As String, lpSectorsPerCluster As Long, lpBytesPerSector As Long, lpNumberOfFreeClusters As Long, lpTotalNumberOfClusters As Long) As Long
    Dim SectorsPerCluster&, BytesPerSector&, NumberOfFreeClusters&, TotalNumberOfClusters&


Declare Function GetDiskFreeSpace_FAT32 Lib "kernel32" Alias "GetDiskFreeSpaceExA" (ByVal lpRootPathName As String, FreeBytesToCaller As Currency, BytesTotal As Currency, FreeBytesTotal As Currency) As Long
    Dim FreeBytesAvailable@, TotalBytes@, TotalFreeBytes@
             
' Inputs:Drive - Type String in the foll
'     owing format "X:" X = drive letter
'
' Returns:Disk Space Free returned as va
'     lue Currency.




Public Function DiskFree(Drive As String) As Currency
    Passed = GetDiskFreeSpace_FAT16(Drive, SectorsPerCluster, BytesPerSector, NumberOfFreeClusters, TotalNumberOfClusters)


    If Passed = 0 Then 'Not FAT16, Try FAT32
        Passed = GetDiskFreeSpace_FAT32(Drive, FreeBytesAvailable, TotalBytes, TotalFreeBytes)


        If Passed = 0 Then
            'getinfo failed, return 0, exit sub
            DiskFree = 0
            Exit Function
        End If
        DiskFree = CCur(FreeBytesAvailable) 'FAT32
        Exit Function
    End If
    DiskFree = CCur(NumberOfFreeClusters * SectorsPerCluster * BytesPerSector) 'FAT16
End Function


hope this helps my friend

cheers
Andy
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Expert Comment

by:rspahitz
ID: 6350732
Further clarification on the "$"

"$" is the old QuickBASIC way of defining a string and was typically put in the dim statement (if the dim statement was used):

Dim A$

is identical to the "newer" (and much clearer)

Dim A as String

--
Also, $ is often used with various functions (Left$, Str$, etc.)  In this case, the results are the same as their counter-parts without the $ (Left, Str, etc.), but (I'm told) the ones with the $ are much faster becauses they explicitly use string for their caluclations rather than the slower variants.
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