'VB 6.0 版 1JV-X G6
'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。 (~fv;}}v
N l^uA
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 F:A Vik
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long Z7k ku:9
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 +]Ev
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 D#[<N
Private Declare Function SetFilePointer Lib "kernel32" (ByVal hFile As Long, ByVal lDistanceToMove As Long, lpDistanceToMoveHigh As Long, ByVal dwMoveMethod As Long) As Long
spWo{
'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。 t(}g;O-
&d]@$4u$;
A>)Ced!
Private Const GENERIC_READ = &H80000000 BCX2C
Private Const GENERIC_WRITE = &H40000000 QkYKm<b
|gU)6}V@
Private Const FILE_SHARE_READ = &H1 mdlMciP
Private Const FILE_SHARE_WRITE = &H2 9)uJ\NMy
Private Const OPEN_EXISTING = 3 =
&m;5R
*hh9
K
Private Const INVALID_HANDLE_VALUE = -1 ,lVQ-qw5
83VFBY2q
'//file seek :es=T`("A8
Private Const FILE_BEGIN = 0 gP>W* ]0r1
Private Const FILE_CURRENT = 1 .etG>tH
Private Const FILE_END = 2 1/%5pb2\
z6|kEc"{
Private Const ERROR_SUCCESS = 0& D58RHgY[
SeLFubs_
'//device io control 2I7|hZ,
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 5yjG\~
)!;20Po
Private Const IOCTL_DISK_GET_DRIVE_GEOMETRY As Long = &H70000 '458752 #$l:%
Private Const IOCTL_STORAGE_GET_MEDIA_TYPES_EX As Long = &H2D0C04
Az/B/BLB
Private Const IOCTL_DISK_FORMAT_TRACKS As Long = &H7C018 Hxn#vAc
Private Const FSCTL_LOCK_VOLUME As Long = &H90018 0qW"b`9R
Private Const FSCTL_UNLOCK_VOLUME As Long = &H9001C w8zr0z
Private Const FSCTL_DISMOUNT_VOLUME As Long = &H90020 |O;vWn'U2
Private Const FSCTL_GET_VOLUME_BITMAP = &H9006F Lz!H@)-mr
*d31fBCk%
'//type ndw&F'.r
Private Type LARGE_INTEGER >u]9(o7I
lowpart As Long u"8KH
u5C@
highpart As Long z`,dEGfh^
End Type I A$=
<`
NtTG
Private Enum MEDIA_TYPE Uy?X-"UR
Unknown h;R>|2A
F5_1Pt2_512 M^G9t*I
F3_1Pt44_512 &w
:0ad|
F3_2Pt88_512
bk]g}s
F3_20Pt8_512 <@c@`K
F3_720_512 fZQ2<*)pqO
F5_360_512 #k,.xMJ~
F5_320_512 Bq,MTzxD
F5_320_1024 cH707?p/I
F5_180_512 WP'.o
F5_160_512 .vd*~U"
RemovableMedia d+"F(R9
FixedMedia COj^pdE3
End Enum _>3#dk
m%c]+Our`
Private Type DISK_GEOMETRY w*X(bua@
Cylinders As LARGE_INTEGER qRq4PQ@
MediaType As MEDIA_TYPE uH#X:Vne
TracksPerCylinder As Long Y Azj>c&
SectorsPerTrack As Long kIRjoKf <F
BytesPerSector As Long _|#P~Ft
End Type 7cO1(yE#vr
8!MVDp[|"
'//private vars +o35${
Private hDisk As Long 'disk handle +wZ|g6vMct
Private lpGeometry As DISK_GEOMETRY 'disk info 2'Raj'2S4
Private lBufferSize As Long 'the buffer size of read/write +jO#?J
{ T<[-"h
Public Function OpenDisk(ByVal FileName As String) As Boolean PGuPw'2;[
'// 打开磁盘 Pfd%[C/vdm
hDisk = CreateFile(FileName, _ @~FJlG(n
GENERIC_READ Or GENERIC_WRITE, _ X]d
N1/_
FILE_SHARE_READ Or FILE_SHARE_WRITE, _ I:1Pz|$`
ByVal 0&, _ :_Iz(
2hV
OPEN_EXISTING, _ qCq?`0&#
0, _ aO2zD<d
0)
[WXcp1p
OpenDisk = Not (hDisk = INVALID_HANDLE_VALUE) r4 qs!(
End Function s.a @uR^
-h=wLYl@0i
Public Function CloseDisk() As Boolean ->Fsmb+R
'//关闭磁盘 /JIVp_-p
CloseDisk = CloseHandle(hDisk) M~)iiKw~MY
End Function 7^1K4%IPl
'C @yJf
Public Function GetDiskGeometry() As Boolean # wyjb:Ql
'//获取磁盘参数 |nU%H=Rs/
Dim dwOutBytes As Long l9n$cv^
Dim bResult As Boolean U*XdFH}vV
#TcX5
bResult = DeviceIoControl(hDisk, _ VBW][f
IOCTL_DISK_GET_DRIVE_GEOMETRY, _ j$4lyDfD
ByVal 0&, 0, _ ]hRs -x
lpGeometry, Len(lpGeometry), _ t| B<F t^
dwOutBytes, _ )JU`Z@?8
ByVal 0&) UG]x CkDS
- %?>1n
If bResult Then lBufferSize = lpGeometry.BytesPerSector * lpGeometry.SectorsPerTrack .=) *Qx+
GetDiskGeometry = bResult 99n;
%W>
End Function #c9MVQ_
j"+6aD/lv
Public Sub GetDiskInfo(MediaType As Long, _ X|L_}Q7
Cylinders As Long, _ ry+|gCZ
TracksPerCylinder As Long, _ u++a0>N
SectorsPerTrack As Long, _ NOf{Xx<#k
BytesPerSector As Long) }H/94]~tH
'//返回磁盘的参数 %VE FruM
MediaType = lpGeometry.MediaType i_nUyH%b
Cylinders = lpGeometry.Cylinders.lowpart QBA{*@ A-
TracksPerCylinder = lpGeometry.TracksPerCylinder bNHsjx@
SectorsPerTrack = lpGeometry.SectorsPerTrack Z7 ++c<|p
BytesPerSector = lpGeometry.BytesPerSector *z]P|_:&G
v!=e]w6{
End Sub 3TN'1D ei
=@nW;PUZ
Public Property Get BufferSize() As Long w9Nk8OsL
'//返回每次读/写的缓冲大小 TN/&^/
BufferSize = lBufferSize s !II}'Je
End Property G]dHYxG
-CALU X
4
C3i
Public Function LockVolume() As Boolean I<"UQ\)
'// 将卷锁定 AjsjYThV
Dim dwOutBytes As Long WGo ryvEx
Dim bResult As Boolean |w -s{L3@+
2
o
7o~r
bResult = DeviceIoControl(hDisk, _ J ayax]u7J
FSCTL_LOCK_VOLUME, _ aHPx'R
ByVal 0&, 0, _ fT<3~Z>m
ByVal 0&, 0, _ `W7;-
dwOutBytes, _ ?.ofs}
ByVal 0&) D\E"v,Y\+O
LockVolume = bResult \aN5:Yy
End Function YB4|J44Y
'1zC|:,
@P[%6 d
Public Function UnlockVolume() As Boolean ca[*#xiJ
'// 将卷解锁 N9vNSmm
Dim dwOutBytes As Long y,c\'}*H
Dim bResult As Boolean wkp$/IZKMj
!Nbi&^k B
bResult = DeviceIoControl(hDisk, _ P<9T.l
FSCTL_UNLOCK_VOLUME, _ r
l;Y7l
ByVal 0&, 0, _ Ifq|MZ\
ByVal 0&, 0, _ `:2np{
dwOutBytes, _ 8jiBLZkRf
ByVal 0&) mXu";?2
UnlockVolume = bResult |7.X)h`
End Function iztgk/(+G
PGb}Y {
bNoZ{ 7
Public Function DismountVolume() As Boolean mn(MgJKQ\
'// 将卷卸下,使系统重新辨识磁盘,等效于重新插盘
-:wV3D
Dim dwOutBytes As Long ObataUxQT
Dim bResult As Boolean %v^qQWy=*
\2Kl]G(w%y
bResult = DeviceIoControl(hDisk, _ *4
8LQzc
FSCTL_DISMOUNT_VOLUME, _ C*Qx
ByVal 0&, 0, _ #XNUR
j
ByVal 0&, 0, _ 5oOs.(m|*C
dwOutBytes, _ m-qOyt
ByVal 0&) hJX;/~L
DismountVolume = bResult d8WEsQ+)A
End Function \\ZhM
R^.c
R
G/P]
Public Function ReadDisk(ByVal Cylinders As Long, _ [p)2!]y
ByVal Tracks As Long, _ Ey_mK\'
db() As Byte) As Boolean }(WUZ^L
'//按柱面和磁道来读取磁盘数据 :4pO/I
~
Dim iPos As Long 1M[|9nWUC
Dim lRead As Long OQDx82E
lg@q}
]1
iPos = Cylinders * Tracks * lBufferSize -CPLgT
W7 +Q&4Y
If SeekAbsolute(0, iPos) Then ]agd
Vr^
ReadDisk = ReadBytes(lBufferSize, db(), lRead) D:(h^R0;
End If Mi`t
$hmP
End Function Iapzh y2l
=4Jg6JKYg
Public Function WriteDisk(ByVal Cylinders As Long, _ y;hco
ByVal Tracks As Long, _ 3 >^B%qg6
db() As Byte) As Boolean clr]gib
'//按柱面和磁道来写磁盘数据 ul"Z%
1]
Dim iPos As Long avq
J[R
Dim lRead As Long 'NnmLM(oh
ON"V`_dq+M
iPos = Cylinders * Tracks * lBufferSize t'C9;
/ $'M
If SeekAbsolute(0, iPos) Then t2q
WB[r
WriteDisk = WriteBytes(lBufferSize, db()) f&XM|Bg
End If RC!T1o~L
End Function 54f?YR
5'xZ9K
XLm@, A[
'///////////////////////////////////////////////////////////////////////////////////// r?`7i'
'//file system !V/p.O
-Q1~lN m:
Private Function SeekAbsolute(ByVal HighPos As Long, ByVal LowPos As Long) As Boolean U*T :p>&
'//seek file If|i `,Iy
'//Notice: when you set LowPos=5, the read/write will begin with the 6th(LowPos+1) byte 0%3T'N%
LowPos = SetFilePointer(hDisk, LowPos, HighPos, FILE_BEGIN) @!(V0 -
If LowPos = -1 Then {[+Q\<