Sample Code 210: How to set up GtkSpinButton? |
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Written by kksou
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Saturday, 31 March 2007 |
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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:
Solution
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$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);
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Explanation
- Create the spin button. Here we set it to be in the range 10 to 20 with an increment value of 2.
- Set the entry field to be non-editable.
Note
To be able to change the minimum and maximum values of the spin button on the fly, please refer to the article How to gray out an entry field?.
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