#include <WinAPI.au3>
#include <WindowsConstants.au3>
#include <StructureConstants.au3>

HotKeySet("{Pause}", "_Exit")

Global Const $VK_TAB = 0x09

$hHookProc = DllCallbackRegister("_KeyboardProc", "long", "int;wparam;lparam")

$hHookKeyboard = _WinAPI_SetWindowsHookEx($WH_KEYBOARD_LL, DllCallbackGetPtr($hHookProc), _WinAPI_GetModuleHandle(0), 0)

While 1
    Sleep(100)
WEnd

Func _KeyboardProc($nCode, $wParam, $lParam)
    If $nCode < 0 Then Return _WinAPI_CallNextHookEx($hHookKeyboard, $nCode, $wParam, $lParam)
    
    Switch $wParam
        Case $WM_KEYDOWN, $WM_SYSKEYDOWN, $WM_KEYUP, $WM_SYSKEYUP
            Local $tKEYHOOKS = DllStructCreate($tagKBDLLHOOKSTRUCT, $lParam)
            Local $vKode = DllStructGetData($tKEYHOOKS, "vkCode")
            Local $iFlags = DllStructGetData($tKEYHOOKS, "flags")
            
            Switch $vKode
                Case $VK_TAB
                    If BitAND($iFlags, $LLKHF_ALTDOWN) Then
                        Return -1
                    Else
                        Return _WinAPI_CallNextHookEx($hHookKeyboard, $nCode, $wParam, $lParam)
                    EndIf
            EndSwitch
    EndSwitch
    
    Return _WinAPI_CallNextHookEx($hHookKeyboard, $nCode, $wParam, $lParam)
EndFunc   ;==>_KeyboardProc

Func _Exit()
    DllCallbackFree($hHookProc)
    _WinAPI_UnhookWindowsHookEx($hHookKeyboard)
    Exit
EndFunc