SDL_CleanupPropertyCallback - A callback used to free resources when a property is deleted.

       This datatype is available since SDL 3.2.0.

       This should release any resources associated with value that are no longer needed.

       This  callback  is  set  per-property.  Different properties in the same group can have different cleanup
       callbacks.

       This callback will be called _during_

       SDL_SetPointerPropertyWithCleanup
        if the function fails for any reason.

userdata
              an app-defined pointer passed to the callback.

       value  the pointer assigned to the property to clean up.

       Defined in SDL3/SDL_properties.h

       SDL_CleanupPropertyCallback - A callback used to free resources when a property is deleted.

•(3), SDL_SetPointerPropertyWithCleanup(3)

Simple Directmedia Layer                           SDL 3.2.10                 SDL_CleanupPropertyCallback(3type)

#include"SDL3/SDL.h"typedefvoid(SDLCALL*SDL_CleanupPropertyCallback)(void*userdata,void*value);

       This callback may fire without any locks held; if this is a concern,  the  app  should  provide  its  own
       locking.