Here is a list of all struct and union fields with links to the structures/unions they belong to:

### - f -

- fade_length : SDL_HapticConstant, SDL_HapticCustom, SDL_HapticPeriodic, SDL_HapticRamp
- fade_level : SDL_HapticConstant, SDL_HapticCustom, SDL_HapticPeriodic, SDL_HapticRamp
- file : SDL_DropEvent
- filename : SDL_AssertData
- filter_index : SDL_AudioCVT
- filters : SDL_AudioCVT
- finger : SDL_ControllerTouchpadEvent
- fingerId : SDL_TouchFingerEvent
- flags : SDL_MessageBoxButtonData, SDL_MessageBoxData, SDL_RendererInfo, SDL_Surface, SDLTest_CommonState
- flash_on_focus_loss : SDLTest_CommonState
- format : SDL_AudioSpec, SDL_DisplayMode, SDL_PixelFormat, SDL_Surface
- fp : SDL_RWops
- freq : SDL_AudioSpec
- function : SDL_AssertData