mirror of https://github.com/fltk/fltk
79 lines
3.6 KiB
C++
79 lines
3.6 KiB
C++
//
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// An example of using Fl_Menu_Bar's add() to dynamically create menubars
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//
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// Menu bars can be created several ways. Using add() allows
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// dynamically creating a menubar using a 'pathname' syntax.
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// Use if you're creating items dynamically, or if you're making
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// menubars by hand (as opposed to using fluid), as it's easier
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// to type and read.
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//
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// In this case we're using one callback for all items,
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// but you can make unique callbacks for each item if needed.
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//
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// Copyright 2010 Greg Ercolano.
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// Copyright 1998-2010 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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#include <stdio.h> // fprintf()
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#include <stdlib.h> // exit()
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#include <string.h> // strcmp()
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Menu_Bar.H>
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#include <FL/filename.H> // fl_open_uri()
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// This callback is invoked whenever the user clicks an item in the menu bar
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static void MyMenuCallback(Fl_Widget *w, void *) {
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Fl_Menu_Bar *bar = (Fl_Menu_Bar*)w; // Get the menubar widget
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const Fl_Menu_Item *item = bar->mvalue(); // Get the menu item that was picked
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char ipath[256]; bar->item_pathname(ipath, sizeof(ipath)); // Get full pathname of picked item
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fprintf(stderr, "callback: You picked '%s'", item->label()); // Print item picked
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fprintf(stderr, ", item_pathname() is '%s'", ipath); // ..and full pathname
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if ( item->flags & (FL_MENU_RADIO|FL_MENU_TOGGLE) ) { // Toggle or radio item?
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fprintf(stderr, ", value is %s", item->value()?"on":"off"); // Print item's value
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}
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fprintf(stderr, "\n");
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if ( strcmp(item->label(), "Google") == 0 ) { fl_open_uri("http://google.com/"); }
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if ( strcmp(item->label(), "&Quit") == 0 ) { exit(0); }
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}
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int main() {
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Fl::scheme("gtk+");
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Fl_Window *win = new Fl_Window(400,200, "menubar-simple"); // Create window
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Fl_Menu_Bar *menu = new Fl_Menu_Bar(0,0,400,25); // Create menubar, items..
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menu->add("&File/&Open", "^o", MyMenuCallback);
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menu->add("&File/&Save", "^s", MyMenuCallback, 0, FL_MENU_DIVIDER);
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menu->add("&File/&Quit", "^q", MyMenuCallback);
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menu->add("&Edit/&Copy", "^c", MyMenuCallback);
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menu->add("&Edit/&Paste", "^v", MyMenuCallback, 0, FL_MENU_DIVIDER);
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menu->add("&Edit/Radio 1", 0, MyMenuCallback, 0, FL_MENU_RADIO);
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menu->add("&Edit/Radio 2", 0, MyMenuCallback, 0, FL_MENU_RADIO|FL_MENU_DIVIDER);
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menu->add("&Edit/Toggle 1", 0, MyMenuCallback, 0, FL_MENU_TOGGLE); // Default: off
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menu->add("&Edit/Toggle 2", 0, MyMenuCallback, 0, FL_MENU_TOGGLE); // Default: off
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menu->add("&Edit/Toggle 3", 0, MyMenuCallback, 0, FL_MENU_TOGGLE|FL_MENU_VALUE); // Default: on
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menu->add("&Help/Google", 0, MyMenuCallback);
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// Example: show how we can dynamically change the state of item Toggle #2 (turn it 'on')
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{
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Fl_Menu_Item *item = (Fl_Menu_Item*)menu->find_item("&Edit/Toggle 2"); // Find item
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if ( item ) item->set(); // Turn it on
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else fprintf(stderr, "'Toggle 2' item not found?!\n"); // (optional) Not found? complain!
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}
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win->end();
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win->show();
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return(Fl::run());
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}
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