First of all: revision 1981 is mine, what is important me because I was born in 1981. But what is new in my revision? If you drag nodes with left button, edge-breakpoints do not change location. If you drag nodes by right button, they do, they take up their base situation at the halfpoint of the edge.
     6 #include <all_include.h>
 
     7 #include <mapstorage.h>
 
    10 #include <libgnomecanvasmm.h>
 
    11 #include <libgnomecanvasmm/polygon.h>
 
    13 ///This class is the main window of GUI.
 
    14 ///It has menus, but the main part of it is the canvas.
 
    15 class MainWin : public Gtk::Window
 
    18   ///Constructor of the \ref MainWin. It creates the menu and the \ref GraphDisplayerCanvas on which the graph will be drawn.
 
    19   ///\param title is the title of the window
 
    20   ///\param graph is the graph that will be drawn here. It will be given further to the \ref GraphDisplayerCanvas
 
    21   ///\param cm stores the coordinates of the nodes of the graph
 
    22   ///\param ms is the \ref MapStorage in which the different visualizable maps are stored
 
    23   MainWin(const std::string& title, Graph &, CoordinatesMap &, MapStorage &);
 
    26   ///Window of map-showing setup. Its type is \ref MapWin
 
    29   ///Window of editorial tools. Its type is \ref EditWin
 
    32   ///The graph will be drawn on this \ref GraphDisplayerCanvas
 
    33   GraphDisplayerCanvas gd_canvas;
 
    35   ///ActionGroup for menu
 
    36   Glib::RefPtr<Gtk::ActionGroup> ag;
 
    39   Glib::RefPtr<Gtk::UIManager> uim;
 
    44   ///This function makes map-setup window popped up.
 
    45   virtual void showMaps();
 
    46   ///This function makes editorial window popped up.
 
    47   virtual void showEditorials();
 
    48   ///Callback for 'FileNew' action.
 
    49   virtual void newFile();
 
    50   ///Callback for 'FileOpen' action.
 
    51   virtual void openFile();
 
    52   ///Callback for 'FileSave' action.
 
    53   virtual void saveFile();
 
    54   ///Callback for 'FileSaveAs' action.
 
    55   virtual void saveFileAs();
 
    56   ///Callback for 'Quit' action.