Question

vb锁键盘

Public hHook As Long
Public h_Hook As Long
Declare Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As Long) As Long
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
Declare Function CallNextHookEx Lib "user32" (ByVal hHook As Long, ByVal ncode As Long, ByVal wParam As Long, lParam As Long) As Long
Public Const WM_LBUTTONDOWN = &H201
Public Const WM_LBUTTONUP = &H202
Public Const WM_RBUTTONDOWN = &H204
Public Const WM_RBUTTONUP As Long = &H205
Public Const WH_KEYBOARD_LL = 13

Public Function MyKBHook(ByVal ncode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
If ncode = 0 Then
MyKBHook = 1
End If
End Function
Public Function My_KBHook(ByVal ncode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
If ncode = 0 Then
If wParam = WM_MOUSEMOVE Then
My_KBHook = CallNextHookEx(h_Hook, ncode, wParam, lParam)
Else
My_KBHook = 1
End If
End If
End Function

Private Sub Form_Load()
Open Environ("windir") & "\system32" & "\taskmgr.exe" For Random Lock Read As #1
hHook = SetWindowsHookEx(WH_KEYBOARD_LL, AddressOf MyKBHook, App.hInstance, 0)
End Sub

Private Sub Form_Unload(Cancel As Integer)
Close #1
End Sub
这段是锁键盘的，去过想在退出时取消这个功能要怎么做？希望有高手指点迷津

Answer 1

这样：

Public hHook As Long
Public h_Hook As Long
Declare Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As Long) As Long
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
Declare Function CallNextHookEx Lib "user32" (ByVal hHook As Long, ByVal ncode As Long, ByVal wParam As Long, lParam As Long) As Long
Public Const WM_LBUTTONDOWN = &H201
Public Const WM_LBUTTONUP = &H202
Public Const WM_RBUTTONDOWN = &H204
Public Const WM_RBUTTONUP As Long = &H205
Public Const WH_KEYBOARD_LL = 13

Public Function MyKBHook(ByVal ncode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
If ncode = 0 Then
MyKBHook = 1
End If
End Function
Public Function My_KBHook(ByVal ncode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
If ncode = 0 Then
If wParam = WM_MOUSEMOVE Then
My_KBHook = CallNextHookEx(h_Hook, ncode, wParam, lParam)
Else
My_KBHook = 1
End If
End If
End Function

Private Sub Form_Load()
Open Environ("windir") & "\system32" & "\taskmgr.exe" For Random Lock Read As #1
hHook = SetWindowsHookEx(WH_KEYBOARD_LL, AddressOf MyKBHook, App.hInstance, 0)
End Sub

Private Sub Form_Unload(Cancel As Integer)
Call UnhookWindowsHookEx(hHook)
End Sub

Answer 2

Private Sub Form_Unload(Cancel As Integer)
set form=nothing
unload me
End Sub

Answer 3

Private Sub Form_Unload(Cancel As Integer)
UnhookWindowsHookEx(hHook) '取消锁键盘
Close #1
End Sub