Adding Menu Items
Callback function to return to on Click Event
MyDelegateFunction cbf = new MyDelegateFunction(Form1.callbackFunction);
Adding Active Menu Items
this.njb_menu_manager.addMenuItem("Edit", 0, 1, "New", "", cbf);
this.njb_menu_manager.addMenuItem("Edit", 2, 3, "Open", "", cbf);
Parameters: Menu Name, Initial Image Index, Selected Image Index, Shortcut (if any),Callback function reference
Adding Menu Item separator Line
this.njb_menu_manager.addMenuItemsSeparator("Edit");
Parameters: Menu Name