NAME

       SDL_HintCallback - A callback used to send notifications of hint value changes.

HEADER FILE

       Defined in SDL3/SDL_hints.h

SYNOPSIS

       #include "SDL3/SDL.h"

       typedef void(SDLCALL *SDL_HintCallback)(void *userdata, const char *name, const char *oldValue, const char *newValue);

DESCRIPTION

       This is called an initial time during

       SDL_AddHintCallback
        with the hint's current value, and then again each time the hint's value changes.

FUNCTION PARAMETERS

       userdata
              what was passed as userdata to SDL_AddHintCallback ().

       name   what was passed as name to SDL_AddHintCallback ().

       oldValue
              the previous hint value.

       newValue
              the new value hint is to be set to.

THREAD SAFETY

       This  callback  is  fired from whatever thread is setting a new hint value.  SDL holds a lock on the hint
       subsystem when calling this callback.

AVAILABILITY

       This datatype is available since SDL 3.2.0.

SEE ALSO

       •(3), SDL_AddHintCallback(3)

Simple Directmedia Layer                            SDL 3.2.8                            SDL_HintCallback(3type)