Base class for input stream implementations that perform some kind of filtering operation on a base stream. Typical examples of filtering operations are character set conversion, compression and byte order flipping.
Sets our main struct and passes it to the parent class.
Gets the base stream for the filter stream.
Returns whether the base stream will be closed when stream is closed.
Get the main Gtk struct
the main Gtk struct as a void*
Sets whether the base stream will be closed when stream is closed.
the main Gtk struct