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by kksou
Sample Code 254: How to set up clickable link using GtkLinkButton - Part 2 - using set_uri_hook? |
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Written by kksou
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Saturday, 09 June 2007 |
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Problem You would like to set up a clickable link using the new widget GtkLinkButton available in gtk+2.10 and above as shown below:
Solution
- Instead of using the standard
connect('clicked', call_back_fn) to capture button clicks on each of the GtkLinkButton, we can set up a global hook with GtkLinkButton::set_uri_hook() that will capture button clicks for ALL GtkLinkButtons in an application.
- The advantage of using this method is that you do not need to explicitly set up
connect('clicked') for each of the link button.
- Note that if you intend to use
GtkLinkButton::set_uri_hook(), when creating the GtkLinkButton, you have to use another constructor new GtkLinkButton($url, $label) where $url is the url of the link, and label is the label for the link button.
Important Note: This only works for PHP-GTK2 compliled with gtk+ v2.10 and above. If you are using an older version, for linux, you may follow the step-by-step instructions to recompile php-gtk2 with gtk+ v2.10. For windows, please refer to How to install php gtk2 on windows? You may also want to take a look here to see some of the new exciting PHP-GTK2 Functionalities.
Sample Code 1
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| <?php
$window = new GtkWindow();
$window->set_title($argv[0]);
$window->set_size_request(400, 150);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
// display title
$title = new GtkLabel("Set up clickable link using GtkLinkButton\n".
"Part 2 - using set_uri_hook()");
$title->modify_font(new PangoFontDescription("Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$title->set_size_request(-1, 40);
$title->set_justify(Gtk::JUSTIFY_CENTER);
$alignment = new GtkAlignment(0.5, 0, 0, 0);
$alignment->add($title);
$vbox->pack_start($alignment, 0, 0);
$vbox->pack_start(new GtkLabel(), 0, 0);
// link button
$hbox = new GtkHBox();
$vbox->pack_start($hbox, false, false);
$link_button1 = new GtkLinkButton( // note 1
"http://gtk.php.net/manual/en/gtkclasses.php", "manual");
$link_button2 = new GtkLinkBUtton(
"http://www.nabble.com/Php---GTK---General-f171.html", "mailing list");
$hbox->pack_start(new GtkLabel("Reference: php-gtk2"), false);
$hbox->pack_start($link_button1, false);
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- Note that this is only 70% of the sample code. You have to be a registered member to see the entire sample code. Please login or register.
- Registration is free and immediate.
- Have some doubt about the registration? Please read this forum article.
Explanation
- Create the link button. Note that you have to use this alternative constructor to specify both the url and the label of the button. Compare this with Part 1.
- Set up the global hook.
- Note that if you're running this example on linux, please comment out these 3 lines and replace with the system command to launch your favorite browser.
Related Links
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