Problem
This article achieves the same objective as Part 1, that is, using Enter to move to next field.
In this Part 3, we use the method GtkWidget::child_focus()
Solution
- Instead of using
grab_focus()
as used in Part 1, we use the method GtkWidget::child_focus(Gtk::DIR_TAB_FORWARD) which will give the same effect as if the use has pressed the Tab key. - If you want a shift-tab instead, use
Gtk::DIR_TAB_BACKWARD
.
Sample Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 37 39 41 42 43 44 45 46 47 48 49 50 51 52 54 55 57 58 59 60 61 62 63 64 65 66 67 68 69 71 72 73 74 75 78 81 83 85 86 87 88 89 90 91 | <?php $window = new GtkWindow(); $window->set_size_request(400, 240); $window->connect_simple('destroy', array('Gtk','main_quit')); $window->add($vbox = new GtkVBox()); // display title $title = new GtkLabel("Use Enter to Move to Next Field - Part 3\n". "child_focus(Gtk::DIR_TAB_FORWARD)"); $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); $fields = array('Item number', 'Item Description', 'Unit price', 'Quantity'); $field_size = array(120, 200, 80, 80); $entry = array(); // to store the text entries $table = new GtkTable(); display_table($table, $fields, $field_size); // display the table $vbox->pack_start($table); function display_table($table, $fields, $field_size) { global $entry; $row = 0; foreach ($fields as $field) { $label = new GtkLabel(" $field: "); $alignment = new GtkAlignment(1, .5, 0, 0); $alignment->add($label); $table->attach($alignment, 0, 1, $row, $row+1, Gtk::FILL, Gtk::SHRINK, 0, 0); $entry[$row] = new GtkEntry(); $alignment = new GtkAlignment(0, .5, 0, 0); $alignment->add($entry[$row]); $entry[$row]->set_size_request($field_size[$row], -1); $table->attach($alignment, 1, 2, $row, $row+1); $entry[$row]->connect('key-press-event', 'on_keypress', $row); ++$row; } } // create a submit button $button = new GtkButton('Submit'); $button->set_size_request(60, 28); $button->connect('clicked', 'on_click'); $row = count($fields); $alignment = new GtkAlignment(0, 0.5, 0, 0); $alignment->add($button); $table->attach($alignment, 1, 2, $row, $row+1); $window->show_all(); Gtk::main(); function on_click($button) { global $fields, $entry; $i=0; foreach($fields as $field) { echo "$field: ".$entry[$i]->get_text()."\n"; ++$i; } } function on_keypress($widget, $event, $row) { global $entry, $button; if ($event->keyval!=Gdk::KEY_Return) return false; // use if ($event->keyval!=65293) if your version of php-gtk2 // does not have Gdk::KEY_Return defined $next_row = ++$row; if ($next_row<count($entry)) { $widget->get_toplevel()->child_focus(Gtk::DIR_TAB_FORWARD); // note 1 } else { $button->grab_focus(); $button->clicked(); } } ?> |
Output
As shown above.
Explanation
We make use of the code from How to have Enter move to next field in form - Part 1?
What's new here:
- Simulate a tab keypress.
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