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Use this macro to get the size of the data stream in an SDL_RWops.
Sint64 SDL_RWsize(SDL_RWops *context);
the SDL_RWops to get the size of the data stream from
Returns the size of the data stream in the SDL_RWops on success, -1 if unknown or a negative error code on failure; call SDL_GetError() for more information.
This function is available since SDL 2.0.0.
CategoryAPI, CategoryIO, CategoryDraft