[−][src]Struct sdl2_sys::SDL_RWops
This is the read/write operation structure -- very basic.
Fields
size: Option<unsafe extern "C" fn(context: *mut SDL_RWops) -> Sint64>
Return the size of the file in this rwops, or -1 if unknown
seek: Option<unsafe extern "C" fn(context: *mut SDL_RWops, offset: Sint64, whence: c_int) -> Sint64>
Seek to \c offset relative to \c whence, one of stdio's whence values: RW_SEEK_SET, RW_SEEK_CUR, RW_SEEK_END
\return the final offset in the data stream, or -1 on error.
read: Option<unsafe extern "C" fn(context: *mut SDL_RWops, ptr: *mut c_void, size: size_t, maxnum: size_t) -> size_t>
Read up to \c maxnum objects each of size \c size from the data stream to the area pointed at by \c ptr.
\return the number of objects read, or 0 at error or end of file.
write: Option<unsafe extern "C" fn(context: *mut SDL_RWops, ptr: *const c_void, size: size_t, num: size_t) -> size_t>
Write exactly \c num objects each of size \c size from the area pointed at by \c ptr to data stream.
\return the number of objects written, or 0 at error or end of file.
close: Option<unsafe extern "C" fn(context: *mut SDL_RWops) -> c_int>
Close and free an allocated SDL_RWops structure.
\return 0 if successful or -1 on write error when flushing data.
type_: Uint32
Trait Implementations
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T: ?Sized,
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