PollEvent在没有鼠标移动[SDL]的情况下无法工作

PollEvent not working without mouse movement[SDL]

本文关键字：情况下 工作 SDL 鼠标 移动 PollEvent      更新时间：2023-10-16

如果鼠标没有在窗口内移动，或者在运行动画时没有按下任何键，则会绕过PollEvent。这是代码：

    SDL_Init(SDL_INIT_EVERYTHING);
    int imgFlags = IMG_INIT_PNG | IMG_INIT_JPG;
    if (IMG_Init(imgFlags) != imgFlags)
    {
        std::cout << IMG_GetError() << std::endl;
    }
    window = SDL_CreateWindow("NRG", 200, 200, 800, 600, SDL_WINDOW_SHOWN);
    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED| SDL_RENDERER_PRESENTVSYNC);

    isRunning = true;
    while (isRunning)
    {
        while (SDL_PollEvent(&ev))
        {
            heroImg = LoadTxt("image.png", renderer);
            SDL_QueryTexture(heroImg, NULL, NULL, &textureWidth, &textureHeight);
            frameWidth = textureWidth / 3;
            frameHeight = textureHeight / 4;
            heroRct.x = 0;
            heroRct.y = 0;
            heroRct.h = frameHeight;
            heroRct.w = frameWidth;
            frameTime++;
            if (60 / frameTime == 4)
            {
                frameTime = 0;
                heroRct.x += frameWidth;
                if (heroRct.x >= textureWidth)
                    heroRct.x = 0;
            }
            SDL_RenderClear(renderer);
            SDL_RenderCopy(renderer, heroImg, &heroRct, NULL);
            SDL_RenderPresent(renderer);
        }
    }
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    window = NULL;
    windowSurface = NULL;
    renderer = NULL;
    SDL_Quit();

其他类似SDL_Event ev的东西；包含在.h文件中

对于任何有同样问题的人：将渲染等置于之外，同时（SDL_PollEvent（&ev））循环：）

愚蠢的错误，对于beginer来说很难解决：）

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