SDL_AddHintCallback

Add a function to watch a particular hint.

Header File

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

const char *	name	the hint to watch.
SDL_HintCallback	callback	An SDL_HintCallback function that will be called when the hint value changes.
void *	userdata	a pointer to pass to the callback function.

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

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

It is safe to call this function from any thread.

This function is available since SDL 3.2.0.