如何正确使用键盘钩按键组合以阻止键并再次按C 将其解开

在以下代码中，我没有构建错误，但是"键a被阻止"。未在运行时打印：

#include "stdafx.h"
#include <iostream>
#include <conio.h>
#include <Windows.h>
#include <sstream>
#define _WIN32_WINNT 0x050
using namespace std;
string intToHexString(int intValue) {
    string hexStr;
    /// integer value to hex-string
    stringstream sstream;
    sstream << "0x" <<  hex << (int)intValue;
    hexStr = sstream.str();
    sstream.clear();    //clears out the stream-string
    return hexStr;
}
LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam) {
    BOOL locked = FALSE;
    PKBDLLHOOKSTRUCT hookStruct;
    if (nCode == HC_ACTION) {
        switch (wParam)
        {
        case WM_KEYDOWN:
        case WM_SYSKEYDOWN:
        case WM_KEYUP:
        case WM_SYSKEYUP:
            hookStruct = (PKBDLLHOOKSTRUCT)lParam;
      /**
        * this is where the problem is
      */
            //ctrl+alt+n
            if (hookStruct->vkCode == 0x11 && hookStruct->vkCode == 0x12 && hookStruct->vkCode == 0x4E
                && !locked) {
                locked = TRUE;
                if (hookStruct->vkCode == 0x41) {
                    cout << "The key A is blocked" << endl;
                    return 1;
                }
            }
            else if (hookStruct->vkCode == 0x11 && hookStruct->vkCode == 0x12 && hookStruct->vkCode == 0x4E) {
                locked = FALSE;
                BlockInput(locked);
                cout << "The key is unblocked" << endl;
            }
            else {
                return CallNextHookEx(NULL, nCode, wParam, lParam);
            }
        }
    }
    return CallNextHookEx(NULL, nCode, wParam, lParam);
}
int main()
{
    char key_pressed;
    int ascii_value;
    string key_press_special;
    HHOOK hhkLowLevelKybd = SetWindowsHookEx(WH_KEYBOARD_LL, LowLevelKeyboardProc, 0, 0);
    cout << "press any key to see it's Character, ASCII and Scan Code" << endl;
    cout << "Press ESC key to Exit" << endl;
    while(1) {
        key_pressed = _getch();
        if (key_pressed == 13) {
            key_press_special = "Enter";
            cout << "Character: " << key_press_special << endl;
        }
        else if (key_pressed == 9) {
            key_press_special = "Tab";
            cout << "Character: " << key_press_special << endl;
        }
        else if (key_pressed == 27) {
            key_press_special = "ESC";
            cout << "Character: " << key_press_special << endl;
        }
        else {
            cout << "Character: " << key_pressed << endl;
        }
         ascii_value = key_pressed;
        cout << "The ASCII Value is: " << ascii_value << endl;
        int scan = MapVirtualKey(ascii_value, 0);
        string scanCode = intToHexString(scan);
        cout << "Scan Code is: " << scanCode << endl;
        if (key_pressed == 27) {
            break;
        }
        else {
            continue;
        }
    }
    
    UnhookWindowsHookEx(hhkLowLevelKybd);
    return 0;
}