keyboard hooking
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);
}

후킹 시작

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

후킹제거

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

(이 예제코드는 ‘int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR lpszCmdParam, int nCmdShow)’ 에서 사용할때의 예제입니다..) 컴파일했는데 PKBDLLHOOKSTRUCT를 못찾는 에러가 난다면 #define _WIN32_WINNT 0x0400 를 추가하여 막을수 있습니다,

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