fltk/FL/Fl_Menu_Button.H

//
// "$Id$"
//
// Menu button header file for the Fast Light Tool Kit (FLTK).
//
// 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
//

/* \file
   Fl_Menu_Button widget . */

#ifndef Fl_Menu_Button_H
#define Fl_Menu_Button_H

#include "Fl_Menu_.H"

/**
  This is a button that when pushed pops up a menu (or hierarchy of
  menus) defined by an array of 
  Fl_Menu_Item objects.
  <P ALIGN=CENTER>\image html  menu_button.gif</P>
  \image latex  menu_button.eps " menu_button" width=5cm
  <P>Normally any mouse button will pop up a menu and it is lined up
  below the button as shown in the picture.  However an Fl_Menu_Button
  may also control a pop-up menu.  This is done by setting the type()
  , see below. </P>
  <P>The menu will also pop up in response to shortcuts indicated by
  putting a '&' character in the label(). </P>
  <P>Typing the shortcut() of any of the menu items will cause
  callbacks exactly the same as when you pick the item with the mouse.
  The '&' character in menu item names are only looked at when the menu is
  popped up, however. </P>
  <P>When the user picks an item off the menu, the item's callback is
  done with the menu_button as the Fl_Widget* argument.  If the
  item does not have a callback the menu_button's callback is done
  instead.
*/
class FL_EXPORT Fl_Menu_Button : public Fl_Menu_ {
protected:
  void draw();
public:
  // values for type:
  enum {POPUP1 = 1, POPUP2, POPUP12, POPUP3, POPUP13, POPUP23, POPUP123};
  int handle(int);
  const Fl_Menu_Item* popup();
  Fl_Menu_Button(int,int,int,int,const char * =0);
};

#endif

//
// End of "$Id$".
//