Added examples directory

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7628 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

examples/tree-simple.cxx

@@ -0,0 +1,71 @@
+//
+// "$Id$"
+//
+// Simple Fl_Tree widget example. - erco 06/05/2010
+//
+// Copyright 1998-2010 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+//     http://www.fltk.org/str.php
+//
+#include <stdio.h>
+#include <FL/Fl.H>
+#include <FL/Fl_Double_Window.H>
+#include <FL/Fl_Tree.H>
+
+// Tree's callback
+//    Invoked whenever someone clicks an item.
+//
+void TreeCallback(Fl_Widget *w, void *data) {
+  Fl_Tree      *tree = (Fl_Tree*)w;
+  Fl_Tree_Item *item = (Fl_Tree_Item*)tree->item_clicked();
+  fprintf(stderr, "TreeCallback: item clicked='%s'\n", (item)?item->label():"???");
+}
+
+int main(int argc, char *argv[]) {
+  Fl::scheme("gtk+");
+  Fl_Double_Window *win = new Fl_Double_Window(250, 400, "Simple Tree");
+  win->begin();
+  {
+    // Create the tree
+    Fl_Tree *tree = new Fl_Tree(10, 10, win->w()-20, win->h()-20);
+    tree->showroot(0);				// don't show root of tree
+    tree->callback(TreeCallback);		// setup a callback for the tree
+
+    // Add some items
+    tree->add("Flintstones/Fred");
+    tree->add("Flintstones/Wilma");
+    tree->add("Flintstones/Pebbles");
+    tree->add("Simpsons/Homer");
+    tree->add("Simpsons/Marge");
+    tree->add("Simpsons/Bart");
+    tree->add("Simpsons/Lisa");
+
+    // Start with one of the items closed
+    tree->close("Simpsons");
+  }
+  win->end();
+  win->resizable(win);
+  win->show(argc, argv);
+  return(Fl::run());
+}
+
+//
+// End of "$Id$".
+//