separate out Help system functions into their own source file (pending some extra ones) and change the required includes to accomodate this. As a result, some error class definitions have to move from .cpp file to .h file.

src/widgets/HelpSystem.h

@@ -0,0 +1,42 @@
+/**********************************************************************
+
+  Audacity: A Digital Audio Editor
+
+  ErrorDialog.h
+
+  Jimmy Johnson
+  James Crook
+
+**********************************************************************/
+
+#ifndef __AUDACITY_HELPSYSTEM__
+#define __AUDACITY_HELPSYSTEM__
+
+#include "../Audacity.h"
+#include <wx/defs.h>
+#include <wx/window.h>
+
+class AudacityProject;
+
+/// Displays cutable information in a text ctrl, with an OK button.
+void ShowInfoDialog( wxWindow *parent,
+                     const wxString &dlogTitle,
+                     const wxString &shortMsg,
+                     const wxString &message, 
+                     const int xSize, const int ySize);
+
+/// Displays a new window with wxHTML help.
+void ShowHtmlText( wxWindow * pParent, 
+                   const wxString &Title,
+                   const wxString &HtmlText,
+                   bool bIsFile, bool bModal);
+
+/// Displays a file in your browser, if it's available locally,
+/// OR else links to the internet.
+void ShowHelpDialog(wxWindow *parent,
+                     const wxString &localFileName,
+                     const wxString &remoteURL);
+
+
+
+#endif // __AUDACITY_HELPSYSTEM__