+ virtual void UpdateLevel( int )
+ { GimmickError("INTERNAL ERROR : TreeView::UpdateLevel not overloaded");}
+
+ ///Removes selected nodes
+ virtual void RemoveSelected( )
+ { GimmickError("INTERNAL ERROR : TreeView::RemoveSelected not overloaded");}
+
+ ///Validates the selected images
+ virtual void ValidateSelectedImages()
+ { GimmickError("INTERNAL ERROR : TreeView::ValidateSelected not overloaded");}
+
+ ///Returns the last selected level
+ virtual unsigned int GetLastSelectedLevel(){GimmickError("INTERNAL ERROR : TreeView::GetLastSelectedLevel not overloaded");}
+
+ ///Returns the maximum number of levels
+ virtual int GetNumberOfLevels(){ GimmickError("INTERNAL ERROR : TreeView::GetLevels not overloaded"); }
+ ///Gets the current selections filenames
+ virtual void GetSelectedAsString(std::vector<std::string>&s){ GimmickError("INTERNAL ERROR : TreeView::GetSelectedAsString not overloaded"); }
+
+ /// Gets the user selected data from the level passed as a parameter
+ virtual const std::vector<tree::Node*>& GetSelected(int level){ GimmickError("INTERNAL ERROR : TreeView::GetSelected not overloaded"); }
+
+ /// Gets the next nodes on the list, be it up(true) or down(false).
+ virtual void GetNodes(std::vector<tree::Node*>& nodes, bool direction){ GimmickError("INTERNAL ERROR : TreeView::GetNodes not overloaded"); }
+