Add documentation for virtual file system support in wxWebView.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/SOC2011_WEBVIEW@68523 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/webfilehandler.h

@@ -0,0 +1,31 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        webfilehandler.h
+// Purpose:     interface of wxWebFileHandler
+// Author:      wxWidgets team
+// RCS-ID:      $Id$
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+    @class wxWebFileHandler
+  
+    A custom handler for the file scheme which also supports loading from 
+    archives. The syntax for wxWebFileHandler differs from virtual file 
+    systems in the rest of wxWidgets by using a syntax such as
+    @c file:///C:/exmaple/docs.zip;protocol=zip/main.htm Currently the only
+    supported protocol is @c zip. 
+   
+    @library{wxweb}
+    @category{web}
+    
+    @see wxWebView, wxWebHandler
+ */
+class wxWebFileHandler : public wxWebHandler
+{
+public:
+    /**
+        @return The string @c "file"
+    */
+    virtual wxString GetName() const;
+    virtual wxFSFile* GetFile(const wxString &uri);
+};