+If the parent stream is passed as a pointer then the new filter stream
+takes ownership of it. If it is passed by reference then it does not.
+
+The {\it flags} wxZLIB\_ZLIB and wxZLIB\_GZIP specify whether the input data
+is in zlib or gzip format. If wxZLIB\_AUTO is used, then zlib will
+autodetect the stream type, this is the default.
+
+If {\it flags} is wxZLIB\_NO\_HEADER, then the data is assumed to be a raw
+deflate stream without either zlib or gzip headers. This is a lower level
+mode, which is not usually used directly. It can be used to read a raw
+deflate stream embedded in a higher level protocol.
+
+%if WXWIN_COMPATIBILITY_2_4
+This version is not by default compatible with the output produced by
+the version of {\it wxZlibOutputStream} in wxWidgets 2.4.x. However,
+there is a compatibility mode, which is switched on by passing
+wxZLIB\_24COMPATIBLE for flags. Note that in when operating in compatibility
+mode error checking is very much reduced.
+%endif
+
+The following symbols can be use for the flags: