#include <iostream>
#include <thread>
#include <chrono>

#include <windows.h>

void PrintError(const char *msg, bool pause = false, bool shutdown = true);

void Sleep(int ms);

int main() {
    int width, height;
    {
        RECT d;
        auto hD = GetDesktopWindow();
        GetWindowRect(hD, &d);
        width = d.right - 4;
        height = d.bottom;
    }

    INPUT ip;
    ip.type = INPUT_KEYBOARD;
    ip.ki.time = 0;
    ip.ki.dwFlags = KEYEVENTF_UNICODE;
    ip.ki.wScan = VK_RETURN; //VK_RETURN is the code of Return key
    ip.ki.wVk = 0;
    ip.ki.dwExtraInfo = 0;

    while (true) {
        POINT p;
        if (!GetCursorPos(&p))
            PrintError("Cannot get cursor pos");
        if (p.x >= width) {
            SendInput(1, &ip, sizeof(ip));
            Sleep(10 * 1000);
        }
        Sleep(500);
    }
}

void PrintError(const char *msg, bool pause, bool shutdown) {
    fprintf(stdout, "%s\n", msg);
    if (pause)
        std::cin.get();
    if (shutdown)
        exit(EXIT_FAILURE);
}

void Sleep(int ms) {
    std::this_thread::sleep_for(std::chrono::milliseconds(ms));
}