+ return false;
+
+ TextFileView *view = getView();
+
+ if (view)
+ return (wxDocument::IsModified() || view->getTextCtrl()->IsModified());
+ else
+ return wxDocument::IsModified();
+}
+
+
+TextFileView*
+TextFileDocument::getView() const
+{
+ return dynamic_cast<TextFileView*>(GetFirstView());
+}
+
+wxTextCtrl*
+TextFileDocument::getTextCtrl()
+{
+ return dynamic_cast<TextFileView*>(GetFirstView())->getTextCtrl();
+}
+
+//////////////////////////////////////////////////////////////////////////
+//
+// Graph3dFileDocument
+//
+//////////////////////////////////////////////////////////////////////////
+
+#if wxUSE_GLCANVAS
+
+IMPLEMENT_DYNAMIC_CLASS(Graph3dFileDocument, wxDocument)
+
+Graph3dFileDocument::Graph3dFileDocument(void)
+: m_bBadFileOpen(false), m_nVertices(0), m_pVertices(0), m_pNormals(0),m_nx(0),m_ny(0),m_array(0)
+{
+}
+
+Graph3dFileDocument::~Graph3dFileDocument()
+{
+// delete [] m_pVertices;
+// delete [] m_pNormals;
+}
+
+bool
+Graph3dFileDocument::OnSaveDocument(const wxString& filename)
+{
+ Modify(false);
+ return true;