SDL_EnableKeyRepeat - Set keyboard repeat rate.
#include "SDL.h"
int SDL_EnableKeyRepeat(int delay, int
interval);
Enables or disables the keyboard repeat rate. delay specifies how long
the key must be pressed before it begins repeating, it then repeats at the
speed specified by interval. Both delay and interval are
expressed in milliseconds.
Setting delay to 0 disables key repeating completely. Good
default values are SDL_DEFAULT_REPEAT_DELAY and
SDL_DEFAULT_REPEAT_INTERVAL.
Returns 0 on success and -1 on failure.