#include <iostream>
#include <windows.h>
#include <strsafe.h>

using namespace std;

SHORT nScreenWidth=100, nScreenHeight=80;
const SMALL_RECT windowRect = { 0,0,nScreenWidth,nScreenHeight };


void ErrorExit(LPTSTR lpszFunction)
{
    // Retrieve the system error message for the last-error code

    LPVOID lpMsgBuf;
    LPVOID lpDisplayBuf;
    DWORD dw = GetLastError();

    FormatMessage(
        FORMAT_MESSAGE_ALLOCATE_BUFFER |
        FORMAT_MESSAGE_FROM_SYSTEM |
        FORMAT_MESSAGE_IGNORE_INSERTS,
        NULL,
        dw,
        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
        (LPTSTR)&lpMsgBuf,
        0, NULL);

    // Display the error message and exit the process

    lpDisplayBuf = (LPVOID)LocalAlloc(LMEM_ZEROINIT,
        (lstrlen((LPCTSTR)lpMsgBuf) + lstrlen((LPCTSTR)lpszFunction) + 40) * sizeof(TCHAR));
    StringCchPrintf((LPTSTR)lpDisplayBuf,
        LocalSize(lpDisplayBuf) / sizeof(TCHAR),
        TEXT("%s failed with error %d: %s"),
        lpszFunction, dw, lpMsgBuf);
    MessageBox(NULL, (LPCTSTR)lpDisplayBuf, TEXT("Error"), MB_OK);

    LocalFree(lpMsgBuf);
    LocalFree(lpDisplayBuf);
    ExitProcess(dw);
}

int main() {
    wchar_t *screen = new wchar_t[nScreenWidth*nScreenHeight];
    HANDLE hConsole = CreateConsoleScreenBuffer(GENERIC_READ | GENERIC_WRITE, 0, NULL, CONSOLE_TEXTMODE_BUFFER, NULL);
    SetConsoleActiveScreenBuffer(hConsole);
    DWORD dwBytesWritten = 0;

    for (int x = 0; x < nScreenWidth; x++) {
        for (int y = 0; y < nScreenHeight; y++) {
            screen[x + y*nScreenHeight] = 'p';
        }
    }

    while (1) {
        screen[nScreenWidth * nScreenHeight - 1] = '\0';
        if (SetConsoleWindowInfo(hConsole, TRUE, &windowRect) == 0) {
            cout << GetLastError()<< endl;
            LPTSTR string = L"text";
            ErrorExit(string);
            break;
        }
        WriteConsoleOutputCharacter(hConsole, screen, nScreenWidth * nScreenHeight, { 0,0 }, &dwBytesWritten);
    }


    return 0;
}