SDL_FlipMode.3type - Man Page

Defined in SDL3/SDL_surface.h

#include "SDL3/SDL.h"

typedef enum SDL_FlipMode
{
    SDL_FLIP_NONE,          /**< Do not flip */
    SDL_FLIP_HORIZONTAL,    /**< flip horizontally */
    SDL_FLIP_VERTICAL       /**< flip vertically */
} SDL_FlipMode;

This enum is available since SDL 3.2.0.