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Problem Suppose you would like to set up radio buttons with images as options. In Part 1, each option comprises an image with a text label. In this Part 2, each option is just an image (without the text label) as shown below:
Solution
- We make use of exactly the same technique as outlined in How to setup radio buttons with images as options - Part 1?
- Instead of packing both an image and a text label, we pack only the image in this case.
- However, since there is no text label, we need to manually pass the text label along with the 'toggled' signal for the radio buttons.
Sample Code Note: The following image files are required by the sample code below. Please save a copy of the image files and put them in the same directory where you store the sample code.
 | square_yellow.jpg |
 | square_green.jpg |
 | square_blue.jpg |
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| <?php
$window = new GtkWindow();
$window->set_size_request(400, 300);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
// display title
$title = new GtkLabel("Radio button with images as options\n".
" Part 2 - Images only");
$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);
$vbox->pack_start($title, 0, 0);
$vbox->pack_start(new GtkLabel(), 0, 0);
$vbox->pack_start(new GtkLabel('Please select a color:'), 0, 0);
// setup grouped radio buttons
$radio1 = setup_radio(null, 'Yellow', '101', 'square_yellow.jpg');
$radio2 = setup_radio($radio1, 'Green', '102', 'square_green.jpg');
$radio3 = setup_radio($radio1, 'Blue', '103', 'square_blue.jpg');
// pack them inside vbox
$vbox->pack_start($radio1, 0, 0);
$vbox->pack_start($radio2, 0, 0);
$vbox->pack_start($radio3, 0, 0);
// add a status area
$vbox->pack_start($status_area = new GtkLabel('Click a Button'));
// function to simplify the display of grouped radio buttons
function setup_radio($radio_button_grp, $button_label,
$button_value, $img_filename) {
$radio = new GtkRadioButton($radio_button_grp);
$radio->connect('toggled', "on_toggle", $button_label, $button_value); // note 1
$button_hbox = new GtkHBox();
$radio->add($button_hbox);
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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 The above makes use of the code from How to setup radio buttons with images as options - Part 1?
What's new here:
- Pass the text label along with each 'toggled' signal.
- Note that the text label is now contained in the second parameter
$label
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