Function app_main

examples/multiple_windows.cpp:102–263

}

int app_main(int argc, char* argv[])
{
  SystemRef system = System::make();
  FontRef font = FontMgr::Make()->defaultFont(12);

  system->setAppMode(AppMode::GUI);
  system->handleWindowResize = [&font](Window* w) { redraw_window(w, font); };
  system->handleWindowMoving = [&font](Window* w) {
    redraw_window(w, font);
    w->invalidate();
  };

  // Create four windows for each screen with the bounds of the
  // workarea.
  ScreenList screens;
  system->listScreens(screens);
  char chr = 'A';
  for (ScreenRef& screen : screens) {
    const std::string primary = (screen->isPrimary() ? std::string(" (primary screen)") :
                                                       std::string());

    WindowSpec spec;
    spec.titled(true);
    spec.position(WindowSpec::Position::Frame);
    spec.frame(screen->workarea());
    spec.screen(screen);

    gfx::Point pos[4] = {
      { 0, 0 },
      { 1, 0 },
      { 0, 1 },
      { 1, 1 }
    };
    for (auto& p : pos) {
      WindowSpec s = spec;
      gfx::Rect frame = s.frame();
      frame.w /= 2;
      frame.h /= 2;
      frame.x = frame.x + frame.w * p.x;
      frame.y = frame.y + frame.h * p.y;
      s.frame(frame);
      add_window(std::string(1, chr++) + primary, s, font);
    }
  }

  system->finishLaunching();
  system->activateApp();

  EventQueue* queue = system->eventQueue();
  Event ev;
  while (!windows.empty()) {
    queue->getEvent(ev);

    switch (ev.type()) {
      case Event::CloseApp:
        windows.clear(); // Close all windows
        break;