'VB 6.0 版 jl29~^@}1i
'这不是我写的,它更强悍了。因为可以直接读写物理扇区(CHS),而不是逻辑扇区。 *3oQS"8
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Private Declare Function CreateFile Lib "kernel32" Alias "CreateFileA" (ByVal lpFileName As String, ByVal dwDesiredAccess As Long, ByVal dwShareMode As Long, lpSecurityAttributes As Long, ByVal dwCreationDisposition As Long, ByVal dwFlagsAndAttributes As Long, ByVal hTemplateFile As Long) As Long wWswuhq<
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long 'B:De"_(N
Private Declare Function ReadFile Lib "kernel32" (ByVal hFile As Long, lpBuffer As Any, ByVal nNumberOfBytesToRead As Long, lpNumberOfBytesRead As Long, ByVal lpOverlapped As Long) As Long '//declare has changed DuZ]g#
Private Declare Function WriteFile Lib "kernel32" (ByVal hFile As Long, lpBuffer As Any, ByVal nNumberOfBytesToWrite As Long, lpNumberOfBytesWritten As Long, ByVal lpOverlapped As Long) As Long '//declare has changed tELnq#<6
Private Declare Function SetFilePointer Lib "kernel32" (ByVal hFile As Long, ByVal lDistanceToMove As Long, lpDistanceToMoveHigh As Long, ByVal dwMoveMethod As Long) As Long *#9kFz-
'如果用绝对扇区写,那么文件的建立打开都不能用VB的 open 语句了。 {]N?DmF
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Private Const GENERIC_READ = &H80000000 mw.aavB
Private Const GENERIC_WRITE = &H40000000 P?ol]MwaB
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Private Const FILE_SHARE_READ = &H1 *M5C*}dl
Private Const FILE_SHARE_WRITE = &H2 vxZUtyJfe
Private Const OPEN_EXISTING = 3 .b)
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Private Const INVALID_HANDLE_VALUE = -1 5WG@ ;K%
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'//file seek o: DnZN
Private Const FILE_BEGIN = 0 ^?`,f>`M
Private Const FILE_CURRENT = 1 AU\!5+RDB
Private Const FILE_END = 2 'v)+S;oB
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Private Const ERROR_SUCCESS = 0& v)pWx0l=
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'//device io control EU~'n-
Private Declare Function DeviceIoControl Lib "kernel32" (ByVal hDevice As Long, ByVal dwIoControlCode As Long, lpInBuffer As Any, ByVal nInBufferSize As Long, lpOutBuffer As Any, ByVal nOutBufferSize As Long, lpBytesReturned As Long, ByVal lpOverlapped As Long) As Long t$%}*@x7
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Private Const IOCTL_DISK_GET_DRIVE_GEOMETRY As Long = &H70000 '458752 Ki\jiflc7
Private Const IOCTL_STORAGE_GET_MEDIA_TYPES_EX As Long = &H2D0C04 ho<#i(
Private Const IOCTL_DISK_FORMAT_TRACKS As Long = &H7C018 88U
Private Const FSCTL_LOCK_VOLUME As Long = &H90018 S(xA}0]
Private Const FSCTL_UNLOCK_VOLUME As Long = &H9001C !9Xex?et
Private Const FSCTL_DISMOUNT_VOLUME As Long = &H90020 }Ec"&
Private Const FSCTL_GET_VOLUME_BITMAP = &H9006F ]c+'SJQ
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'//type Ghe=hhZ
Private Type LARGE_INTEGER DzOJ{dF
lowpart As Long 2l%iXK[
highpart As Long 7nIMIkT:
End Type SX8%F:<.
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Private Enum MEDIA_TYPE ZXkAw sr
Unknown n-WvIy
F5_1Pt2_512 Stx-(Kfn4
F3_1Pt44_512 Ds/zl Z
F3_2Pt88_512 l/M+JT~R
F3_20Pt8_512 l,8|E
F3_720_512 =~*u(0sJa
F5_360_512 wpmtv325
F5_320_512 ovVU%2o1b
F5_320_1024 K|!)<6ZsG7
F5_180_512 `buTP?]4.
F5_160_512 Jrl
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RemovableMedia V!!'S
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FixedMedia k{8N@&D
End Enum SjU6+|l
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Private Type DISK_GEOMETRY l)bUHh5[
Cylinders As LARGE_INTEGER 3N
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MediaType As MEDIA_TYPE "fw
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TracksPerCylinder As Long _"TG:RP
SectorsPerTrack As Long pc>R|~J{2
BytesPerSector As Long 1yf&ck1R
End Type =^}2 /vA
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'//private vars 3<lDsb(}0A
Private hDisk As Long 'disk handle \hX^Cn=6
Private lpGeometry As DISK_GEOMETRY 'disk info RmCR"~
Private lBufferSize As Long 'the buffer size of read/write /iy/2x28>
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Public Function OpenDisk(ByVal FileName As String) As Boolean Fv
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'// 打开磁盘 ]sE^=;Pv?
hDisk = CreateFile(FileName, _ 4QDzG~N4)|
GENERIC_READ Or GENERIC_WRITE, _ '?4[w]0J<
FILE_SHARE_READ Or FILE_SHARE_WRITE, _ 9bvd1bKEW
ByVal 0&, _ .!! yj,bQz
OPEN_EXISTING, _ :oQaN[3>_
0, _ ?whp_
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OpenDisk = Not (hDisk = INVALID_HANDLE_VALUE) rkp0ej2-
End Function 5$w1[}UUd
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Public Function CloseDisk() As Boolean JJa?"82FXZ
'//关闭磁盘 CQ ?|=cN
CloseDisk = CloseHandle(hDisk) $
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End Function jws(`mIf\
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Public Function GetDiskGeometry() As Boolean *n\qV*|6bI
'//获取磁盘参数 IS~oyFS
Dim dwOutBytes As Long tL|Q{+i
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Dim bResult As Boolean U)6JJv
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bResult = DeviceIoControl(hDisk, _ X?a67qL
IOCTL_DISK_GET_DRIVE_GEOMETRY, _ ~*Wb
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ByVal 0&, 0, _ d{jl&:
lpGeometry, Len(lpGeometry), _ S([De"y
dwOutBytes, _ .d,Zx
ByVal 0&) z@}~2K
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If bResult Then lBufferSize = lpGeometry.BytesPerSector * lpGeometry.SectorsPerTrack 2Ev,dWV
GetDiskGeometry = bResult kE}Ib4]J
End Function P'';F}NwfX
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Public Sub GetDiskInfo(MediaType As Long, _ 6ZJQ '9f
Cylinders As Long, _ H(| v
TracksPerCylinder As Long, _ %0'f`P6
SectorsPerTrack As Long, _ #/6X44
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BytesPerSector As Long) (C|%@6 1S
'//返回磁盘的参数 +ZO*~.zZ
MediaType = lpGeometry.MediaType %-.GyG$i
Cylinders = lpGeometry.Cylinders.lowpart sa])^mkq(
TracksPerCylinder = lpGeometry.TracksPerCylinder ;!b(b%
SectorsPerTrack = lpGeometry.SectorsPerTrack ,'}ZcN2)
BytesPerSector = lpGeometry.BytesPerSector _9dV
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End Sub \/%mabLK
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Public Property Get BufferSize() As Long IuL]V TY
'//返回每次读/写的缓冲大小 ~Fh(4'
BufferSize = lBufferSize }W J`q`g
End Property hR2.w/2j
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Public Function LockVolume() As Boolean XafyI*pOX
'// 将卷锁定 *{bqHMd4L
Dim dwOutBytes As Long 7;V
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Dim bResult As Boolean $6[]c)(
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bResult = DeviceIoControl(hDisk, _ G<I5%Yo6G
FSCTL_LOCK_VOLUME, _ /:)4tIV
ByVal 0&, 0, _ u-$AFSt
ByVal 0&, 0, _ 'Z[R*Ikzq
dwOutBytes, _ oc3/
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ByVal 0&) /e,lD)
LockVolume = bResult Q*5d~Yr ]R
End Function s Y,3
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Public Function UnlockVolume() As Boolean rkrt.B
'// 将卷解锁 O_q_O
Dim dwOutBytes As Long ){Y2TWW&0
Dim bResult As Boolean
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bResult = DeviceIoControl(hDisk, _ 62q-7nV
FSCTL_UNLOCK_VOLUME, _ rXMv&]Ag
ByVal 0&, 0, _ ' =kX
ByVal 0&, 0, _ }HzZj;O^2>
dwOutBytes, _ rv[\2@}
ByVal 0&) ))vwofkw4
UnlockVolume = bResult R_&>iu'[
End Function -$rfu
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Public Function DismountVolume() As Boolean 0J"3RTt
'// 将卷卸下,使系统重新辨识磁盘,等效于重新插盘
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Dim dwOutBytes As Long Ra5cfkH;
Dim bResult As Boolean DX|kO
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bResult = DeviceIoControl(hDisk, _ hG U &C]
FSCTL_DISMOUNT_VOLUME, _ h=aHZ6v
ByVal 0&, 0, _ U7N<!6
ByVal 0&, 0, _ T/ov0l_
dwOutBytes, _ 4C$,X!kzF
ByVal 0&) utXcfKdt
DismountVolume = bResult ,o`qB81
End Function >X]<s^
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Public Function ReadDisk(ByVal Cylinders As Long, _ aNz%vbh\
ByVal Tracks As Long, _ @9L9c
db() As Byte) As Boolean YZ}gZQ.A0
'//按柱面和磁道来读取磁盘数据 ??Lxb% 7R
Dim iPos As Long 5y)kQ<x"
Dim lRead As Long Jq->DzSmj/
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iPos = Cylinders * Tracks * lBufferSize ,^(T^ -
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If SeekAbsolute(0, iPos) Then D'X'h}+2
ReadDisk = ReadBytes(lBufferSize, db(), lRead) K|&