请问为什么我公司的vb点虐 源码到了我的电脑上运行就会显示好多未声明啊？

用API 函数GetVolumeInformation得到的不是硬盘的序列号！！！

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BOOL GetVolumeInformation(

LPCTSTR lpRootPathName,

LPTSTR lpVolumeNameBuffer,

DWORD nVolumeNameSize,

LPDWORD lpVolumeSerialNumber,

LPDWORD lpMaximumComponentLength,

LPDWORD lpFileSystemFlags,

LPTSTR lpFileSystemNameBuffer,

DWORD nFileSystemNameSize

);

看看英文啊：VolumeSerialNumber!得到的只是卷区序列号！

硬盘的序列号应该是

Drive Model Number________________: WDC WD400EB-00CPF0

Drive Serial Number_______________: WD-WCAATF083586

Drive Controller Revision Number__: 06.04G06

Controller Buffer Size on Drive___: 2097152 bytes

Drive Type________________________: Fixed

Drive Size________________________: 40020664320 bytes

中：

Drive Serial Number_______________: WD-WCAATF083586 这才是硬盘Serial Number！！！！

这个号是不会因为你格式化硬盘而改动，也不是网上流传的修改工具能改的，（其实网上流传的修改工具的也不过是卷区号而已！）

建议用 DiskID.dll或DiskID32.dll来获取

用diskid.dll和disk32.dll获得硬盘序列号

1.调用diskid.dll实现：

Option Explicit

Private Declare Function IsWinNT Lib "DiskID.DLL" () As Long

Private Declare Function ReadPhysicalDrive9X Lib "DiskID.DLL" (driveID As Long, buffer As Long, bufLen As Long) As Long

Private Declare Function ReadPhysicalDriveInNT Lib "DiskID.DLL" (driveID As Long, buffer As Long, bufLen As Long) As Long

Private Type DRIVER_INFO_OK

ModalNumber(39) As Byte

SerialNumber(19) As Byte

ControlNum(7) As Byte

DriveType As Long

Cylinders As Long

Heads As Long

Sectors As Long

End Type

Private Sub Command1_Click()

Dim x As DRIVER_INFO_OK

Dim i As Long

If IsWinNT = 1 Then

i = ReadPhysicalDriveInNT(ByVal 0, ByVal VarPtr(x), ByVal 256)

Else

i = ReadPhysicalDrive9X(ByVal 0, ByVal VarPtr(x), ByVal 256)

End If

Dim s As String

s = StrConv(x.ModalNumber, vbUnicode)

s = Left(s, InStr(1, s, Chr(0)) - 1)

MsgBox "硬件厂商代码为：" + s

s = StrConv(x.SerialNumber, vbUnicode)

s = Left(s, InStr(1, s, Chr(0)) - 1)

MsgBox "硬盘序列号为：" + s

End Sub

2.调用diskid32.dll实现：

Option Explicit

Private Declare Function DiskID32 Lib "DiskID32.DLL" (ByRef DiskModel As Byte, ByRef DiskID As Byte) As Long

Private Sub Command1_Click()

Dim DiskModel(31) As Byte, DiskID(31) As Byte, i As Integer, Model As String, ID As String

If DiskID32(DiskModel(0), DiskID(0)) 1 Then

MsgBox "get diskid32 err"

Exit Sub

End If

For i = 0 To 31

If Chr(DiskModel(i)) Chr(0) Then

Model = Model Chr(DiskModel(i))

End If

If Chr(DiskID(i)) Chr(0) Then

ID = ID Chr(DiskID(i))

End If

Next

MsgBox "硬件产生代码为：" + Model

MsgBox "硬盘序列号为：" + ID

End Sub

说明：diskid.dll可从下载

diskid32.dll可从下载

VB.NET 我在Class里面用Public关键词写的函数和变量为什么在窗体里面调用时被提示未声明?

猜想你使用时是用类名.方法名？

改成(new 类名()).方法名试试。

vb编程中出现未声明Txet1 是什么意思

窗体上不存在 Text1 这个控件，所以出错。

通常文本框控件在VB6中默认是Text1，而在VB.NET中则是TextBox1，是不是这个错误？如果是，那么你可以把代码中的全部Text1改为TextBox1，或者把文本框控件的名称改为Text1也行。

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