SDL_RWtell
Use this function to determine the current read/write offset in an SDL_RWops data stream.
Syntax
Sint64 SDL_RWtell(struct SDL_RWops* context)
Function Parameters
context |
a SDL_RWops data stream object from which to get the current offset |
Return Value
Returns the current offset in the stream, or -1 if the information can not be determined.
Code Examples
extern SDL_RWops *rw;
printf("Current position in stream: %lld\n", (long long) SDL_RWtell(rw));
if (SDL_RWseek(rw, 0, RW_SEEK_END) != -1) {
printf("Final position in stream: %lld\n", (long long) SDL_RWtell(rw));
}
Remarks
SDL_RWtell is actually a macro that calls the SDL_RWops's seek method, with an offset of 0 bytes from RW_SEEK_CUR, to simplify application development.
