210. How to set up GtkSpinButton?

Problem

You would like to set up a spin button for the user to enter a numeric value between a given range as shown below:

How to set up GtkSpinButton?


Solution


Sample Code

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<?php
$window = new GtkWindow();
$window->set_size_request(400, 120);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());

// display title
$title = new GtkLabel("Set up GtkSpinButton");
$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, 0.5, 0, 0);
$alignment->add($title);
$vbox->pack_start($alignment, 0);
$vbox->pack_start(new GtkLabel(), 0);

$vbox->pack_start($hbox = new GtkHBox(), 0);
$hbox->pack_start(new GtkLabel('Please select a value: '), 0);
$spin_button = GtkSpinButton::new_with_range(10, 20, 2); // note 1
$spin_button->set_editable(0); // note 2
$hbox->pack_start($spin_button, 0);

$window->show_all();
Gtk::main();

?>

Output

As shown above.

 

Explanation

  1. Create the spin button. Here we set it to be in the range 10 to 20 with an increment value of 2.
  2. Set the entry field to be non-editable.

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