Menubar example added.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7984 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 93 insertions, 0 deletions

diff --git a/examples/menubar-add.cxx b/examples/menubar-add.cxx
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+++ b/examples/menubar-add.cxx
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+//
+// "$Id$"
+//
+// An example of using Fl_Menu_Bar's add() to dynamically create menubars
+//
+//	Menu bars can be created several ways. Using add() allows
+//	dynamically creating a menubar using a 'pathname' syntax.
+//	Use if you're creating items dynamically, or if you're making 
+//	menubars by hand (as opposed to using fluid), as it's easier
+//	to type and read. 
+//
+//	In this case we're using one callback for all items, 
+//	but you can make unique callbacks for each item if needed.
+//
+// Copyright 2010 Greg Ercolano.
+// 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>			// fprintf()
+#include <stdlib.h>			// exit()
+#include <string.h>			// strcmp()
+#include <FL/Fl.H>
+#include <FL/Fl_Window.H>
+#include <FL/Fl_Menu_Bar.H>
+#include <FL/filename.H>		// fl_open_uri()
+
+// This callback is invoked whenever the user clicks an item in the menu bar
+static void MyMenuCallback(Fl_Widget *w, void *) {
+  Fl_Menu_Bar *bar = (Fl_Menu_Bar*)w;				// Get the menubar widget
+  const Fl_Menu_Item *item = bar->mvalue();			// Get the menu item that was picked
+
+  char ipath[256]; bar->item_pathname(ipath, sizeof(ipath));	// Get full pathname of picked item
+
+  fprintf(stderr, "callback: You picked '%s'", item->label());	// Print item picked
+  fprintf(stderr, ", item_pathname() is '%s'", ipath);		// ..and full pathname
+
+  if ( item->flags & (FL_MENU_RADIO|FL_MENU_TOGGLE) ) {		// Toggle or radio item?
+    fprintf(stderr, ", value is %s", item->value()?"on":"off");	// Print item's value
+  }
+  fprintf(stderr, "\n");
+  if ( strcmp(item->label(), "Google") == 0 ) { fl_open_uri("http://google.com/"); }
+  if ( strcmp(item->label(), "&Quit") == 0 ) { exit(0); }
+}
+
+int main() {
+  Fl::scheme("gtk+");
+  Fl_Window *win = new Fl_Window(400,200, "menubar-simple");	// Create window
+  Fl_Menu_Bar *menu = new Fl_Menu_Bar(0,0,400,25);		// Create menubar, items..
+  menu->add("&File/&Open",  "^o", MyMenuCallback);
+  menu->add("&File/&Save",  "^s", MyMenuCallback, 0, FL_MENU_DIVIDER);
+  menu->add("&File/&Quit",  "^q", MyMenuCallback);
+  menu->add("&Edit/&Copy",  "^c", MyMenuCallback);
+  menu->add("&Edit/&Paste", "^v", MyMenuCallback, 0, FL_MENU_DIVIDER);
+  menu->add("&Edit/Radio 1",   0, MyMenuCallback, 0, FL_MENU_RADIO);
+  menu->add("&Edit/Radio 2",   0, MyMenuCallback, 0, FL_MENU_RADIO|FL_MENU_DIVIDER);
+  menu->add("&Edit/Toggle 1",  0, MyMenuCallback, 0, FL_MENU_TOGGLE);			// Default: off 
+  menu->add("&Edit/Toggle 2",  0, MyMenuCallback, 0, FL_MENU_TOGGLE);			// Default: off
+  menu->add("&Edit/Toggle 3",  0, MyMenuCallback, 0, FL_MENU_TOGGLE|FL_MENU_VALUE);	// Default: on
+  menu->add("&Help/Google",    0, MyMenuCallback);
+
+  // Example: show how we can dynamically change the state of item Toggle #2 (turn it 'on')
+  {
+      Fl_Menu_Item *item = (Fl_Menu_Item*)menu->find_item("&Edit/Toggle 2");	// Find item
+      if ( item ) item->set();							// Turn it on
+      else fprintf(stderr, "'Toggle 2' item not found?!\n");			// (optional) Not found? complain!
+  }
+
+  win->end();
+  win->show();
+  return(Fl::run());
+}
+
+//
+// End of "$Id$".
+//