Add wxGetFileType and IsSeekable

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@31924 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/strmbase.tex

@@ -94,6 +94,13 @@ Returns true if no error occurred on the stream.
 \helpref{GetLastError}{wxstreambasegetlasterror}
 
 
+\membersection{wxStreamBase::IsSeekable}\label{wxstreambaseisok}
+
+\constfunc{bool}{IsSeekable}{\void}
+
+Returns true if the streams supports seeking to arbitrary offsets.
+
+
 \membersection{wxStreamBase::OnSysRead}\label{wxstreambaseonsysread}
 
 \func{size\_t}{OnSysRead}{\param{void*}{ buffer}, \param{size\_t}{ bufsize}}