switch-page
Called when the page has been switched.
Пример 102. Listening to the switch-page signal
<?php //Create a new notebook $ntbk = new GtkNotebook(); //Create a first page $ntbk->append_page(new GtkLabel('Page one'), new GtkLabel('1.')); $ntbk->append_page( new GtkLabel('This is the second child'), new GtkLabel('Second') ); $ntbk->append_page( new GtkLabel('Third page'), new GtkLabel('3rd') ); //the fourth tab has no user-defined label // get_tab_label_text() will return NULL in this case $ntbk->append_page(new GtkLabel('IV')); function onSwitchPage($ntbk, $pointer, $pageNum, $wnd) { //the number of the newly selected tab is $pageNum //use it to get the page child widget $pageWidget = $ntbk->get_nth_page($pageNum); //now we can use the page child to retrieve the tab label $text = $ntbk->get_tab_label_text($pageWidget); //show the selected tab's title in the window title $wnd->set_title($text); } $wnd = new GtkWindow(); //everytime the user switches the tab, call the onSwitchPage function $ntbk->connect('switch-page', 'onSwitchPage', $wnd); //The rest of the setup is standard $wnd->set_default_size(300, -1); $wnd->connect_simple('destroy', array('Gtk', 'main_quit')); $wnd->add($ntbk); $wnd->show_all(); Gtk::main(); ?> |
Възвратна функция
void callback(GtkNotebook notebook, pointer pointer, int page_num);