okienko dialogowe z kwadratem

#include "raylib.h"

int main() {
    const int screenWidth = 200, screenHeight = 200;
    InitWindow(screenWidth, screenHeight, "Raylib Example");

    while (!WindowShouldClose()) {
        BeginDrawing();
        ClearBackground(RAYWHITE);
        DrawRectangle((screenWidth - 50) / 2, (screenHeight - 10) / 2, 50, 10, GREEN);
        EndDrawing();
    }

    CloseWindow();
    return 0;
}

#include <QApplication>
#include <QWidget>
#include <QPainter>

class MyWidget : public QWidget {
protected:
    void paintEvent(QPaintEvent*) override {
        QPainter painter(this);
        painter.fillRect((width() - 50) / 2, (height() - 10) / 2, 50, 10, Qt::green);
    }
};

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);
    MyWidget window;
    window.resize(200, 200);
    window.show();
    return app.exec();
}

#include <windows.h>

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp) {
    switch (msg) {
        case WM_PAINT: {
            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(hwnd, &ps);
            HBRUSH greenBrush = CreateSolidBrush(RGB(0, 255, 0));
            RECT rect = { 75, 95, 125, 105 };  // (x1, y1, x2, y2)
            FillRect(hdc, &rect, greenBrush);
            DeleteObject(greenBrush);
            EndPaint(hwnd, &ps);
        } break;
        case WM_DESTROY:
            PostQuitMessage(0);
            return 0;
    }
    return DefWindowProc(hwnd, msg, wp, lp);
}

int WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR, int nCmdShow) {
    const char CLASS_NAME[] = "MyWindowClass";
    WNDCLASS wc = {};
    wc.lpfnWndProc = WndProc;
    wc.hInstance = hInst;
    wc.lpszClassName = CLASS_NAME;

    RegisterClass(&wc);
    HWND hwnd = CreateWindow(CLASS_NAME, "WinAPI Example", WS_OVERLAPPEDWINDOW & ~WS_THICKFRAME & ~WS_MAXIMIZEBOX,
                             CW_USEDEFAULT, CW_USEDEFAULT, 200, 200, nullptr, nullptr, hInst, nullptr);

    ShowWindow(hwnd, nCmdShow);
    MSG msg = {};
    while (GetMessage(&msg, nullptr, 0, 0)) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return 0;
}

#include <ncurses.h>

int main() {
    initscr();            // Inicjalizacja ncurses
    noecho();
    curs_set(0);          // Ukrycie kursora
    start_color();        // Włączenie obsługi kolorów
    init_pair(1, COLOR_GREEN, COLOR_GREEN);  // Zielony tekst na zielonym tle

    int width = 50, height = 10;
    int start_x = (COLS - width) / 2;
    int start_y = (LINES - height) / 2;

    attron(COLOR_PAIR(1));  // Aktywuj kolor
    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            mvaddch(start_y + i, start_x + j, ' ');  // Używamy spacji do rysowania
        }
    }
    attroff(COLOR_PAIR(1)); // Dezaktywuj kolor

    refresh();
    getch();  // Czekaj na klawisz
    endwin(); // Zakończ ncurses
    return 0;
}