HHOOK hKeyboardHook;
 
LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam) 
 
{
 
    PKBDLLHOOKSTRUCT p; 
 
    if (nCode == HC_ACTION) 
    {
        p = (PKBDLLHOOKSTRUCT) lParam;
 
        if (((p->vkCode == VK_LWIN) || (p->vkCode == VK_RWIN)) 
                                                || ( p->flags & LLKHF_ALTDOWN) 
                                                || (p->vkCode == VK_TAB)
           )
 
            return 1; 
 
   }
 
   return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}

hKeyboardHook  = SetWindowsHookEx(WH_KEYBOARD_LL, LowLevelKeyboardProc, hInst, 0); // hook 설치

UnhookWindowsHookEx(hKeyboardHook); //제거
hKeyboardHook = NULL;