You will need to use the virtual key stuff for this, you can use this for the ctrl+alt+del if you want or there is a registry entry you can use if you want any here is the code: 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 VK_STARTKEY = &H5B 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 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.vkCode = VK_ESCAPE) And ((GetKeyState(VK_CONTROL) And &H8000) <> 0)) Or _ p.vkCode = VK_STARTKEY End If End If If fEatKeystroke Then LowLevelKeyboardProc = -1 Else LowLevelKeyboardProc = CallNextHookEx(0, nCode, wParam, ByVal lParam) End If End Function
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if you put this in a module and call this from the form hhkLowLevelKybd = SetWindowsHookEx(WH_KEYBOARD_LL, AddressOf LowLevelKeyboardProc, App.hInstance, 0) |
and this in the unload or when you exit the program: UnhookWindowsHookEx hhkLowLevelKybd hhkLowLevelKybd = 0 |
this will stop alt+esc,ctrl+esc,alt+tab,startkey. to stop alt+F4 you want to put this in the form_unload: as for ctrl+alt+del you want to edit the code above with the relevant vkkeys or edit this registry entry: HKCU\software\microsoft\windows\currentversion\policies\system\DisableTaskMgr |
to a 1. Remember to change it back to 0 when you exit the program!!! Hope this helps!
Milo
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