Here is a list of all functions, variables, defines, enums, and typedefs with links to the files they belong to:

### - u -

- SDL_UDEV_DYNAMIC : SDL_config.h
- SDL_uitoa() : SDL_stdinc.h
- SDL_ulltoa() : SDL_stdinc.h
- SDL_ultoa() : SDL_stdinc.h
- SDL_UnionFRect() : SDL_rect.h
- SDL_UnionRect() : SDL_rect.h
- SDL_UnloadObject() : SDL_loadso.h
- SDL_UnlockAudio() : SDL_audio.h
- SDL_UnlockAudioDevice() : SDL_audio.h
- SDL_UnlockJoysticks() : SDL_joystick.h
- SDL_UnlockMutex() : SDL_mutex.h
- SDL_UnlockSensors() : SDL_sensor.h
- SDL_UnlockSurface() : SDL_surface.h
- SDL_UnlockTexture() : SDL_render.h
- SDL_UnregisterApp() : SDL_main.h
- SDL_UNSUPPORTED : SDL_error.h
- SDL_Unsupported : SDL_error.h
- SDL_UNUSED : begin_code.h
- SDL_UpdateNVTexture() : SDL_render.h
- SDL_UpdateTexture() : SDL_render.h
- SDL_UpdateWindowSurface() : SDL_video.h
- SDL_UpdateWindowSurfaceRects() : SDL_video.h
- SDL_UpdateYUVTexture() : SDL_render.h
- SDL_UpperBlit() : SDL_surface.h
- SDL_UpperBlitScaled() : SDL_surface.h
- SDL_USE_IME : SDL_config.h
- SDL_USEREVENT : SDL_events.h
- SDL_utf8strlcpy() : SDL_stdinc.h
- SDL_utf8strlen() : SDL_stdinc.h
- SDL_utf8strnlen() : SDL_stdinc.h
- Uint16 : SDL_stdinc.h
- uint16_t : SDL_config_ngage.h
- Uint32 : SDL_stdinc.h
- uint32_t : SDL_config_ngage.h
- Uint64 : SDL_stdinc.h
- uint64_t : SDL_config_ngage.h
- Uint8 : SDL_stdinc.h
- uint8_t : SDL_config_ngage.h
- uintptr_t : SDL_config_ngage.h