How to disable key repeat in SDL2?

问题

There used to be a function named SDL_EnableKeyRepeat() in SDL, but not anymore in SDL2.

I searched around in SDL2-wiki but failed to locate anything relevant.

Any ideas?

回答1:

When handling a keyboard event, just filter out any events that are repeat events, i.e. check the repeat field of the SDL_KeyboardEvent of the SDL_Event union.

For example:

SDL_Event event;
while (SDL_PollEvent(&event)) {
  if (event.type == SDL_QUIT) {
    quit = true;
  }
  if (event.type == SDL_KEYDOWN && event.key.repeat == 0) {
    if (event.key.keysym.sym == SDLK_d)
      debug = debug ? false : true;
    // ... handle other keys
  }
}

See https://wiki.libsdl.org/SDL_KeyboardEvent

回答2:

You may be better served by the SDL_GetKeyboardState function which tells you all the keys that are pressed. You can also just check the repeat flag in the event and ignore when repeat is true.

回答3:

You can do it yourself, by adding your "down" key into a list and removing them when you catch a KEY_UP and at each frames you can iterate your list to know which key is still down.

来源：https://stackoverflow.com/questions/22156815/how-to-disable-key-repeat-in-sdl2