我在mac上操作发现必须加上事件的处理才会显示窗口，这是为什么

来源：7-3 SDL窗口渲染

靳晓帅

2020-11-18

SDL_Init(SDL_INIT_VIDEO);

SDL_Window * window = SDL_CreateWindow("jxs test sdl",
                                         100,
                                         100,
                                         640,
                                         480,
                                       SDL_WINDOW_RESIZABLE);
if(window == nullptr) {
    SDL_Log("failed to create window.");
}
SDL_Renderer * renderer = SDL_CreateRenderer(window, -1, 0);
if(renderer == nullptr) {
    SDL_Log("failed to create render.");
}
SDL_Event event;
SDL_PollEvent(&event); // 没有事件处理这两句就不会显示窗口
SDL_RenderClear(renderer);
SDL_SetRenderDrawColor(renderer,255,255,255,255);
SDL_RenderPresent(renderer);
SDL_Delay(30000);

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