Use wxFileName in wxSVGBitmapFileHandler constructor

interface/wx/dcsvg.h

@@ -180,7 +180,7 @@ public:
     When using wxSVGFileDC::SetBitmapHandler() to set this handler with the
     default constructor, the PNG files are created in the runtime location of
     the application. The save location can be customized by using the
-    wxSVGBitmapFileHandler(const wxString&) constructor.
+    wxSVGBitmapFileHandler(const wxFileName&) constructor.
 
     @see wxSVGFileDC::SetBitmapHandler().
 
@@ -196,13 +196,12 @@ public:
         Create a wxSVGBitmapFileHandler and specify the location where the file
         will be saved.
 
-        @param path The path (with separator) of the save location. If
-        @a path contains a filename, the autogenerated filename will be
-        appended to this name.
+        @param path The path of the save location. If @a path contains a
+        filename, the autogenerated filename will be appended to this name.
 
         @since 3.1.3
     */
-    wxSVGBitmapFileHandler(const wxString& path);
+    wxSVGBitmapFileHandler(const wxFileName& path);
 
     virtual bool ProcessBitmap(const wxBitmap& bitmap,
                                wxCoord x, wxCoord y,