read-header

Called to read header information that may be useful for every snip read in this class. This method is only called once per buffer read session, and only if the stream contains header information for this class. This method will not be called again until after a call to read-done.

The return value is #f if a read error occurs or anything else otherwise.

See also write-header.

• (send a-wx:snip-class read-header f) -> boolean
      f : wx:media-stream-in% object