NAME¶

SDL_AddHintCallback - Add a function to watch a particular hint.

SYNOPSIS¶

#include <SDL3/SDL_hints.h>

bool SDL_AddHintCallback(const char *name, SDL_HintCallback callback, void *userdata);

DESCRIPTION¶

The callback function is called _during_ this function, to provide it an initial value, and again each time the hint's value changes.

FUNCTION PARAMETERS¶

name

the hint to watch.

callback

An SDL_HintCallback function that will be called when the hint value changes.

userdata

a pointer to pass to the callback function.

RETURN VALUE¶

Returns true on success or false on failure; call SDL_GetError() for more information.

THREAD SAFETY¶

It is safe to call this function from any thread.

AVAILABILITY¶

This function is available since SDL 3.2.0.

SEE ALSO¶

SDL_RemoveHintCallback(3)