I’ve created an autoclicker and I expected there to be clicks while the mouse button is held down, but it’s only sending one click when the mouse button is held down. Can somebody enlighten me?

#include <iostream>
#include <Windows.h>

int main() {
    bool mouseDown = false;

    while (!GetAsyncKeyState(VK_ESCAPE)) { 
        Sleep(100); 

        if (GetAsyncKeyState(VK_LBUTTON) & 0x8000) {
            if (!mouseDown) {
                INPUT input = { 0 };
                input.type = INPUT_MOUSE;
                input.mi.dwFlags = MOUSEEVENTF_LEFTDOWN;
                SendInput(1, &input, sizeof(INPUT));
                mouseDown = true;
            }
        }
        else {
            if (mouseDown) {
                INPUT input = { 0 };
                input.type = INPUT_MOUSE;
                input.mi.dwFlags = MOUSEEVENTF_LEFTUP;
                SendInput(1, &input, sizeof(INPUT));
                mouseDown = false;
            }
        }
    }

    return 0;
}