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SurfaceTension
Joined: 30 May 2006
Posts: 5
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 Posted: Fri Jun 16, 2006 9:17 pm Post subject: GtkTreeModel::foreach Question |
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Hi again. Thanks all to your very helpful answers to my last question. I now have another "how do I do this" question, which is:
How do I capture return values from a callback function called with the foreach method? More specifically, from the code below, how do I capture the "i did it" string?
| Code: |
<?php
$store = new GtkTreeStore(Gtk::TYPE_STRING);
$store->append(null,array("foo"));
$store->append(null,array("bar"));
$store->append(null,array("hello"));
$store->append(null,array("world"));
$store->append(null,array("some"));
$store->append(null,array("more"));
$store->append(null,array("junk"));
$wnd = new GtkWindow();
$view = new GtkTreeView($store);
$view->append_column(
new GtkTreeViewColumn('col 1', new GtkCellRendererText(), 'text', 0)
);
$vbox = new GtkVBox(false,5);
$vbox->pack_start($view,false,false,2);
$btn = new GtkButton("DoIt!");
$btn->connect_simple('clicked','btn_callback',$store);
$vbox->pack_start($btn,false,false,2);
$wnd->add($vbox);
$wnd->connect_simple('destroy', array('gtk', 'main_quit'));
$wnd->show_all();
Gtk::main();
function btn_callback($store) {
$store->foreach('store_foreach');
}
function store_foreach($store,$path,$iter) {
print($store->get_value($iter,0) . "\n");
if ($store->get_value($iter,0) == "hello")
return("i did it");
}
?>
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cweiske
Joined: 08 Dec 2005
Posts: 454
Location: Leipzig/Germany
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| Posted: Fri Jun 16, 2006 9:42 pm Post subject: |
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- You could use a global variable and store your data in there
- You could do
| Code: | foreach ($store as $row) {
//do something
} |
- In a class, use a class variable. |
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SurfaceTension
Joined: 30 May 2006
Posts: 5
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| Posted: Fri Jun 16, 2006 9:59 pm Post subject: |
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| Thanks. Actually, to solve the problem that prompted this question I did use a class property to store the value. I was just wondering if there was a more efficient solution. |
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cweiske
Joined: 08 Dec 2005
Posts: 454
Location: Leipzig/Germany
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| Posted: Fri Jun 16, 2006 10:05 pm Post subject: |
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| Using the php foreach() language construct should be more efficient, as no callback methods are called. |
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SurfaceTension
Joined: 30 May 2006
Posts: 5
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| Posted: Fri Jun 16, 2006 10:22 pm Post subject: |
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Hmmmm...I changed the above code to use this function:
| Code: | function btn_callback($store) {
// $store->foreach('store_foreach');
print("here\n"); //test that callback is being called
foreach($store as $row)
print("stuff");
}
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And it isn't appearing as though the foreach is even being called.
For the record, I'm developing on WinXP using PHP 5.1.2. Could the problem be that I don't have the latest php-gtk dll files? The most recent ones downloaded with Gnope are dated 12/2/2005. |
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cweiske
Joined: 08 Dec 2005
Posts: 454
Location: Leipzig/Germany
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| Posted: Fri Jun 16, 2006 10:28 pm Post subject: |
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| Look in the announcements section on how to update the php-gtk2.dll file |
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