module2.bas

这个是锁屏器(鼠标锁)可以设置启动计算机时启动..达到保护计算机安全

Attribute VB_Name = "Press"
Option Explicit

Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Public Declare Function GetKeyState Lib "user32" (ByVal nVirtKey As Long) As Integer
Public Declare Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" (ByVal idHook As Long, ByVal lpfn As Long, ByVal hmod As Long, ByVal dwThreadId As Long) As Long
Public Declare Function CallNextHookEx Lib "user32" (ByVal hHook As Long, ByVal nCode As Long, ByVal wParam As Long, lParam As Any) As Long
Public Declare Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As Long) As Long
Public Const HC_ACTION = 0
Public Const WM_KEYDOWN = &H100
Public Const WM_KEYUP = &H101
Public Const WM_SYSKEYDOWN = &H104
Public Const WM_SYSKEYUP = &H105
Public Const VK_TAB = &H9
Public Const VK_CONTROL = &H11
Public Const VK_ESCAPE = &H1B

Public Const WH_KEYBOARD_LL = 13
Public Const LLKHF_ALTDOWN = &H20

Public Type KBDLLHOOKSTRUCT

       vkCode As Long
       scanCode As Long
       flags As Long
       time As Long
      dwExtraInfo As Long
      
End Type

Dim p As KBDLLHOOKSTRUCT

Public Function LowLevelKeyboardProc(ByVal nCode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
   
   Dim fEatKeystroke As Boolean
   
   If (nCode = HC_ACTION) Then
   
      If wParam = WM_KEYDOWN Or wParam = WM_SYSKEYDOWN Or wParam = WM_KEYUP Or wParam = WM_SYSKEYUP Then
         
         CopyMemory p, ByVal lParam, Len(p)
         
         fEatKeystroke = _
           ((p.vkCode = VK_TAB) And ((p.flags And LLKHF_ALTDOWN) <> 0)) Or _
           ((p.vkCode = VK_ESCAPE) And ((p.flags And LLKHF_ALTDOWN) <> 0)) Or _
           ((p.flags And LLKHF_ALTDOWN) <> 0) Or _
           ((p.vkCode = VK_ESCAPE) And ((GetKeyState(VK_CONTROL) And &H8000) <> 0)) Or _
           ((p.vkCode = 91) Or (p.vkCode = 92) Or (p.vkCode = 93))
           'TAB+ALT
           'Esc+ALT
           'Alt+Any(Alt+F4)
           'Esc+Ctrl
           '左右Win 和徽标键
            End If
    End If
    
    If fEatKeystroke Then
    
       LowLevelKeyboardProc = -1
       
    Else
    
       LowLevelKeyboardProc = CallNextHookEx(0, nCode, wParam, ByVal lParam)
       
    End If
    
End Function