I’m working on an input class for a sample C++ project by following some online tutorials, and currently stuck in a weird problem.

In my header class, I have a public child class called KeyboardEvent

class KeyboardEvent
{
public:
    enum class KeyboardEventType
    {
        Invalid,
        Press,
        Release
    };

private:
    KeyboardEventType eventType;
    unsigned char keycode;

public:
    KeyboardEvent(KeyboardEventType type, unsigned char code) :
        eventType(type),
        keycode(code)
    {}

    bool IsPress()
    {
        return eventType == KeyboardEventType::Press;
    }
    bool IsRelease()
    {
        return eventType == KeyboardEventType::Release;
    }

    char GetKeyCode()
    {
        return keycode;
    }
};

Along with that, I have these 3 private variables in the same header:
`static constexpr unsigned int KeysLength = 256u;

std::bitset<KeysLength> keyStates;
std::queue<KeyboardEvent> keyBuffer;`

Now if I call this method below which is in my .cpp file, I get an access violation error on both, keystates[keyCode] as well as keyBuffer.push if I put that on top.

void KeyboardInput::OnKeyPressed(unsigned char keyCode) noexcept
{
    keyStates[keyCode] = true;
    keyBuffer.push(KeyboardInput::KeyboardEvent
    (
        KeyboardInput::KeyboardEvent::KeyboardEventType::Press, keyCode
    ));

    TrimBuffer(keyBuffer);
}

I’ve tried changing the C++ standard, but that would mean my entire project might stop working. I have also tried with and without “noexcept”, but to no avail. The tutorials I am following have the exact code, but just mine doesn’t work. Ideally it should just assign a value to the keyCode index in keyStates and push a new KeyboardEvent to the keyBuffer queue.

But this is unfortunately how my keyStates and keyBuffer look like on breakpoints
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Any help? Thank you!