End Sub
------------------------------end---------------------------------
下面是modu1e.bas的源代码
----------------------module1.bas的源文件--------------------------
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... UMGEDV@AOL.COM
'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
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