#include "treeview.hh"#include <gfc/gtk/cellrenderertext.hh>#include <gfc/gtk/cellrenderertoggle.hh>#include <iostream>enum{   TITLE_COLUMN,   AUTHOR_COLUMN,   CHECKED_COLUMN,   N_COLUMNS};TreeViewWindow::TreeViewWindow(){	set_title("TreeView Example");	// We'll create a TreeStore model but this could be any model. The model pointer	// is a smart pointer because we own the initial reference and it must be freed.	model = new Gtk::TreeStore(N_COLUMNS, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_BOOLEAN);	// Populate the model with data. First acquire a top-level iterator.	Gtk::TreeIter parent_iter = model->append();	// Then, set the cell values	model->set_value(parent_iter, TITLE_COLUMN, "The Art of Computer Programming");	model->set_value(parent_iter, AUTHOR_COLUMN, "Donald E. Knuth");	model->set_value(parent_iter, CHECKED_COLUMN, false);	// Then, acquire a child iterator and set the values for the child cells	Gtk::TreeIter child_iter = model->append(&parent_iter);	model->set_value(child_iter, TITLE_COLUMN, "Volume 1: Fundamental Algorithms");	model->set_value(child_iter, CHECKED_COLUMN, false);	child_iter = model->append(&parent_iter);	model->set_value(child_iter, TITLE_COLUMN, "Volume 2: Seminumerical Algorithms");	model->set_value(child_iter, CHECKED_COLUMN, false);	child_iter = model->append(&parent_iter);	model->set_value(child_iter, TITLE_COLUMN, "Volume 3: Sorting and Searching");	model->set_value(child_iter, CHECKED_COLUMN, false);	// Create a TreeView	tree_view = new Gtk::TreeView(*model);	// You can't create a TreeSelection, you have to retrieve it from the TreeView.	Gtk::TreeSelection *selection = tree_view->get_selection();	selection->set_mode (Gtk::SELECTION_SINGLE);	selection->sig_changed().connect(sigc::mem_fun(this, &TreeViewWindow::on_selection));	// Create a text cell render and arbitrarily make it red for demonstration purposes.	Gtk::CellRendererText *renderer = new Gtk::CellRendererText;	renderer->prop_foreground().set("red");	// Create first column, associating the "text" attribute of the cell_renderer with the first column of the model	Gtk::TreeViewColumn *column = new Gtk::TreeViewColumn("Author", *renderer, "text", AUTHOR_COLUMN);	// Add the column to the view.	tree_view->append_column(*column);	// Create second column. The title of the book.	renderer = new Gtk::CellRendererText;	column = new Gtk::TreeViewColumn("Title", *renderer, "text", TITLE_COLUMN);	tree_view->append_column(*column);	// Create last column. Whether a book is checked out.	Gtk::CellRendererToggle *toggle_renderer = new Gtk::CellRendererToggle;	toggle_renderer->sig_toggled().connect(sigc::mem_fun(this, &TreeViewWindow::on_toggled));	column = new Gtk::TreeViewColumn("Check out", *toggle_renderer, "active", CHECKED_COLUMN);	tree_view->append_column(*column);	// Now we can manipulate the view just like any other widget	add(*tree_view);	tree_view->show_all();}TreeViewWindow::~TreeViewWindow(){}void TreeViewWindow::on_selection(){    Gtk::TreeIter iter;	Gtk::TreeSelection *selection = tree_view->get_selection();	if (selection->get_selected(&iter))    {        String title;	model->get_value(iter, TITLE_COLUMN, title);        std::cout << "You selected a book with the title \"" << title << "\"" << std::endl;    }}voidTreeViewWindow::on_toggled(const String& path_str){	Gtk::TreeIter iter;	Pointer<Gtk::TreePath> path = new Gtk::TreePath(path_str);	// Get toggled iter	model->get_iter(iter, *path);	bool checked;	model->get_value(iter, CHECKED_COLUMN, checked);	// Do something with the value	checked ^= 1;	// Set new value for the CHECKED_COLUMN	model->set_value(iter, CHECKED_COLUMN, checked);}int main (int argc, char *argv[]){	using namespace Main;	init(&argc, &argv);	TreeViewWindow window;	window.sig_destroy().connect(sigc::ptr_fun(&GFC::Main::quit));	window.show();	run();	return 0;}