vb中怎么嵌入汇编？

[happy_gambler]

[dbcontrols]

在http://www.d1vb.com以前有个帖子回答了,你自己找找

[happy_gambler]

我看看

[zarz]

我这里有个例子，希望对你有帮助。

Option Explicit
'
'This shows how to incorporate machine code into VB
'''''''''''''''''''''''''''''''''''''''''''''''''''
'The example fills the array with a few machine instructions and then copies
'them to a procedure address. The modified procedure is then called thru
'CallWindowProc. The result of this specific machine code is your CPU Vendor Name.
'
'##########################################################################
'Apparently it gets a Stack Pointer Error, but I don't know why; if anybody
'can fix that please let me know... [e-mail]
'The Error is not present in the native compiled version; so I think it got
'something to do with the P-Code Calling Convention (strange though)...
'##########################################################################
'
'Sub Dummy serves to reserve some space to copy the machine instructions into.
'
'
'Tested on Intel and AMD CPU's (uncompiled and compiled)
'
'
Private Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (lpvDest As Any, lpvSource As Any, ByVal cbCopy As Long)
Private x As Long

Public Function GetCpuName() As String

Dim MachineCode(0 To 35) As Byte
Dim VarAddr As Long
Dim FunctAddr As Long
Dim EAX As Long
Dim CPUName(1 To 12) As Byte

'set up machine code

MachineCode(0) = &H55 'push ebp

MachineCode(1) = &H8B 'move ebp,esp
MachineCode(2) = &HEC

MachineCode(3) = &H57 'push edi

MachineCode(4) = &H52 'push edx

MachineCode(5) = &H51 'push ecx

MachineCode(6) = &H53 'push ebx

MachineCode(7) = &H8B 'move eax,dword ptr [ebp+8]
MachineCode(8) = &H45
MachineCode(9) = &H8

MachineCode(10) = &HF 'cpuid
MachineCode(11) = &HA2

MachineCode(12) = &H8B 'mov edi,dword ptr [ebp+12]
MachineCode(13) = &H7D
MachineCode(14) = &HC

MachineCode(15) = &H89 'move dword ptr [edi],ebx
MachineCode(16) = &H1F

MachineCode(17) = &H8B 'mov edi,dword ptr [ebp+16]
MachineCode(18) = &H7D
MachineCode(19) = &H10

MachineCode(20) = &H89 'move dword ptr [edi],ecx
MachineCode(21) = &HF

MachineCode(22) = &H8B 'mov edi,dword ptr [ebp+20]
MachineCode(23) = &H7D
MachineCode(24) = &H14

MachineCode(25) = &H89 'move dword ptr [edi],edx
MachineCode(26) = &H17

MachineCode(27) = &H58 'pop ebx

MachineCode(28) = &H59 'pop ecx

MachineCode(29) = &H5A 'pop edx

MachineCode(30) = &H55 'pop edi

MachineCode(31) = &HC9 'leave

MachineCode(32) = &HC2 'ret 16 I tried everything from 0 to 24
MachineCode(33) = &H10 ' but all produce the stack error
MachineCode(34) = &H0

'tell cpuid what we want
EAX = 0

'get address of Machine Code
VarAddr = VarPtr(MachineCode(0))

'get address of Sub Dummy
FunctAddr = GetAddress(AddressOf Dummy)

'copy the Machine Code to where it can be called
CopyMemory ByVal FunctAddr, ByVal VarAddr, 35 '35 bytes machine code

'call it
On Error Resume Next 'apparently it gets a stack pointer error when in P-Code but i dont know why
CallWindowProc FunctAddr, EAX, VarPtr(CPUName(1)), VarPtr(CPUName(9)), VarPtr(CPUName(5))
'Debug.Print Err; Err.Description
'MsgBox Err & Err.Description
On Error GoTo 0

GetCpuName = StrConv(CPUName(), vbUnicode) 'UnicodeName

End Function

Private Function GetAddress(Address As Long) As Long

GetAddress = Address

End Function

Private Sub Dummy()

'the code below just reserves some space to copy the machine code into
'it is never executed

x = 0
x = 1
x = 2
x = 3
x = 4
x = 5
x = 6
x = 7
x = 8
x = 9
x = 10
x = 0
x = 1
x = 2
x = 3
x = 4
x = 5
x = 6
x = 7
x = 8
x = 9
x = 10

End Sub