+bool
+TextFileDocument::IsModified(void) const
+{
+ 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()
+{
+}
+
+bool
+Graph3dFileDocument::OnSaveDocument(const wxString& filename)
+{
+ Modify(false);
+ return true;
+}
+
+bool
+Graph3dFileDocument::OnOpenDocument(const wxString& filename)
+{
+ SetFilename (filename, true);
+ Modify (false);
+ getView()->setInitialClientSize();
+ UpdateAllViews();
+ m_bBadFileOpen = false;
+ return true;
+}
+
+bool
+Graph3dFileDocument::IsModified(void) const
+{
+ return wxDocument::IsModified();
+}
+
+
+Graph3dFileView*
+Graph3dFileDocument::getView() const
+{
+ return dynamic_cast<Graph3dFileView*>(GetFirstView());
+}
+
+bool
+Graph3dFileDocument::createFromImageFile (const ImageFile& rImageFile)
+{
+ m_nx = rImageFile.nx();
+ m_ny = rImageFile.ny();
+ m_array = rImageFile.getArray();
+
+ return true;
+}
+
+void
+Graph3dFileDocument::Activate()
+{
+#if CTSIM_MDI
+ getView()->getFrame()->Activate();
+#endif
+};
+
+
+#endif // wxUSE_GLCANVAS