-Creates a new input stream on the the specified path. You can use all but seek
-functionnality of wxStream. Seek isn't available on all stream. For example,
-http or ftp streams doesn't deal with it. Other functions like StreamSize and
-Tell aren't available for the moment for this sort of stream.
-You will be notified when the EOF is reached by an error.
+Creates a new input stream on the specified path. Notice that this stream is
+unseekable, i.e. SeekI() and TellI() methods shouldn't be used.
+
+Note that you can still know the size of the file you are getting using
+\helpref{wxStreamBase::GetSize()}{wxstreambasegetsize}. However there is a
+limitation: in HTTP protocol, the size is not always specified so sometimes
+\texttt{(size\_t)-1} can returned ot indicate that the size is unknown. In such
+case, you may want to use \helpref{wxInputStream::LastRead()}{wxinputstreamlastread}
+method in a loop to get the total size.