'VB 6.0 版 pE3
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'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。 o@_q]/Mh
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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 rP'me2
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Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long :p1u(hflS
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 H9Gh>u]}
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 %HhBt5w
Private Declare Function SetFilePointer Lib "kernel32" (ByVal hFile As Long, ByVal lDistanceToMove As Long, lpDistanceToMoveHigh As Long, ByVal dwMoveMethod As Long) As Long PF0_8,@U
'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。 D5gFXEeh
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Private Const GENERIC_READ = &H80000000 eFB5=)ld
Private Const GENERIC_WRITE = &H40000000 B5,N7z34F
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Private Const FILE_SHARE_READ = &H1 Zcey|m*|
Private Const FILE_SHARE_WRITE = &H2 K6)
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Private Const OPEN_EXISTING = 3 cRC6 s8
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Private Const INVALID_HANDLE_VALUE = -1 v1
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'//file seek \:P>le'1
Private Const FILE_BEGIN = 0 4V"E8rUL(
Private Const FILE_CURRENT = 1 CmWeY$Jb
Private Const FILE_END = 2 {Ea
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Private Const ERROR_SUCCESS = 0& [DYQ"A=)d
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'//device io control mn'A9er
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 =?5]()'*n
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Private Const IOCTL_DISK_GET_DRIVE_GEOMETRY As Long = &H70000 '458752 K,tQ!kk
Private Const IOCTL_STORAGE_GET_MEDIA_TYPES_EX As Long = &H2D0C04 h<h%*av|
Private Const IOCTL_DISK_FORMAT_TRACKS As Long = &H7C018 4XL^D~V
Private Const FSCTL_LOCK_VOLUME As Long = &H90018 ]HbY
Private Const FSCTL_UNLOCK_VOLUME As Long = &H9001C p
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Private Const FSCTL_DISMOUNT_VOLUME As Long = &H90020 :ffY6L+
Private Const FSCTL_GET_VOLUME_BITMAP = &H9006F 3RUy,s
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'//type $o!zUH~'v
Private Type LARGE_INTEGER \Zb;'eDv
lowpart As Long 9V a}I-
highpart As Long kx8G
End Type pj8=wc h
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Private Enum MEDIA_TYPE NYhB'C2
Unknown b;L\EB
F5_1Pt2_512 9v#CE!
F3_1Pt44_512 mupT<_Y
F3_2Pt88_512 H[T?\Lq
F3_20Pt8_512 b8H{8{wi|
F3_720_512 t"sBPLU\
F5_360_512 s `e{}\
F5_320_512 C;v.S5x
F5_320_1024 TbMW|0 #w
F5_180_512 &L3M]
F5_160_512 9FF0%*tGo
RemovableMedia hy9\57_#
FixedMedia "BAK !N$9
End Enum B 5L2<
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Private Type DISK_GEOMETRY BqEI(c6
Cylinders As LARGE_INTEGER >e
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MediaType As MEDIA_TYPE _OYasJUM
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TracksPerCylinder As Long (xycJ`N
SectorsPerTrack As Long D2#ZpFp"h
BytesPerSector As Long //B&k`u
End Type >:SHV W
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'//private vars &.3"Uo\#
Private hDisk As Long 'disk handle ]iVcog"T
Private lpGeometry As DISK_GEOMETRY 'disk info 7o\@>rNWP
Private lBufferSize As Long 'the buffer size of read/write aI'&O^w+
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Public Function OpenDisk(ByVal FileName As String) As Boolean ^"E^zHM(
'// 打开磁盘 {.`vs;U
hDisk = CreateFile(FileName, _ />C^WQI^
GENERIC_READ Or GENERIC_WRITE, _ )w em|
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FILE_SHARE_READ Or FILE_SHARE_WRITE, _ ]IaMp788
ByVal 0&, _
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OPEN_EXISTING, _ K&u_R
0, _ cF*TotU_m
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OpenDisk = Not (hDisk = INVALID_HANDLE_VALUE) `Uq#W+r,
End Function c&6I[R
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Public Function CloseDisk() As Boolean
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'//关闭磁盘 -au^;CM
CloseDisk = CloseHandle(hDisk) &{5,:%PXw
End Function eNh39er
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Public Function GetDiskGeometry() As Boolean ,};&tR
'//获取磁盘参数 t6rRU~;}
Dim dwOutBytes As Long t}_r]E,{u
Dim bResult As Boolean 0^ _uV9r
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bResult = DeviceIoControl(hDisk, _ 39c2pV[
IOCTL_DISK_GET_DRIVE_GEOMETRY, _ $L`d&$Vh
ByVal 0&, 0, _
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lpGeometry, Len(lpGeometry), _ yH
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dwOutBytes, _ P-[-pi@
ByVal 0&) TT%M'5&
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If bResult Then lBufferSize = lpGeometry.BytesPerSector * lpGeometry.SectorsPerTrack oE@a'*.\
GetDiskGeometry = bResult e
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End Function $B+8Of
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Public Sub GetDiskInfo(MediaType As Long, _ t}a: p6D]
Cylinders As Long, _ |*Yr<zt
TracksPerCylinder As Long, _ _1X!EH"
SectorsPerTrack As Long, _ 6dQ-HI*Y#
BytesPerSector As Long) a"1t-x
'//返回磁盘的参数 7jrt7[{
MediaType = lpGeometry.MediaType 2B1q*`6R
Cylinders = lpGeometry.Cylinders.lowpart T}Tp$.gB
TracksPerCylinder = lpGeometry.TracksPerCylinder wKh4|Ka
SectorsPerTrack = lpGeometry.SectorsPerTrack W<{h,j8
BytesPerSector = lpGeometry.BytesPerSector E#RDqL*J
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End Sub
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Public Property Get BufferSize() As Long %jJ
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'//返回每次读/写的缓冲大小 JBj]najN
BufferSize = lBufferSize Xxj-
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End Property _{ue8kGt
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Public Function LockVolume() As Boolean #!B4 u?"m
'// 将卷锁定 (le9q5Qr.
Dim dwOutBytes As Long R>|{N9
Dim bResult As Boolean B^=-Z8
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bResult = DeviceIoControl(hDisk, _ -
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FSCTL_LOCK_VOLUME, _ m[osg< CR_
ByVal 0&, 0, _ :]K4KFM
ByVal 0&, 0, _ U)TUOwF
dwOutBytes, _ eSn+ B;
ByVal 0&) E,Z$pKL?
LockVolume = bResult !vi>U|rh
End Function @3i\%R)n;
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Public Function UnlockVolume() As Boolean +.8
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'// 将卷解锁 t|?ez4/{z
Dim dwOutBytes As Long te`$%NRl
Dim bResult As Boolean d7^}tM
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bResult = DeviceIoControl(hDisk, _ u~N?NW Q
FSCTL_UNLOCK_VOLUME, _ (y'hyJo
ByVal 0&, 0, _ Yu/ID!`Z
ByVal 0&, 0, _ 6 3iUi9P
dwOutBytes, _ %fZJRu
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ByVal 0&) sfH_5
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UnlockVolume = bResult n)/z0n!\
End Function r+!
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Public Function DismountVolume() As Boolean gk4;>}
'// 将卷卸下,使系统重新辨识磁盘,等效于重新插盘 &A/]pi-\
Dim dwOutBytes As Long f^ZRT@`O
Dim bResult As Boolean /V8#[9K
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bResult = DeviceIoControl(hDisk, _ Oxnp0 s
FSCTL_DISMOUNT_VOLUME, _ "s-"<&>a(
ByVal 0&, 0, _ "V7K SO
ByVal 0&, 0, _ 3d8L6GJ
dwOutBytes, _ H H)!_(SA
ByVal 0&) ~%F9%=
DismountVolume = bResult y8Ir@qp5
End Function &3>)qul
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Public Function ReadDisk(ByVal Cylinders As Long, _ cU (D{~
ByVal Tracks As Long, _ KM0ru
db() As Byte) As Boolean <V'@ks%
'//按柱面和磁道来读取磁盘数据 j3oV+zZ49
Dim iPos As Long qArM|\l1
Dim lRead As Long hW')Sp
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iPos = Cylinders * Tracks * lBufferSize ~\SGb_2
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If SeekAbsolute(0, iPos) Then
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ReadDisk = ReadBytes(lBufferSize, db(), lRead) @n/\L<