Getting signal from GtkFileChooserButton

[stigur]

Hi,

I am trying to get to know PHP-GTK.
How do I get at signal from GtkFileChooserButton?
I can do it with a regular button, but not with this one.
No signals are listed in the documentation.

This is probably a more general issue that I am looking at, clearly, there is some fundamental mechanism that I don't understand. Can anyone point me in the right direction? Even a few keywords might do the trick.

Cheers and thanks,
Stigur

[cweiske]

What do you mean with "signal"? Can you give some example what you want to achive?

[stigur]

Well, a button will activate the 'clicked'-signal, when it is clicked by the user. But which signal does the GtkFileChooserButton envoke? I need to activate a function as soon as the user has picked a file.

Cheers,
Stig

[cweiske]

GtkFileChooserWidget extends GtkVBox. This means, you can access all the children with normal container methods. I suggest you use Dev_GuiInspector to inspect the widget tree of a filechooser widget.

That way you can reach the button, or even the file list and connect your signals there.

[stigur]

<?php
$file_widget = new GtkFileChooserWidget(Gtk::FILE_CHOOSER_ACTION_OPEN);

require_once 'guiinspector/GuiInspector.php';
$gi = new Dev_GuiInspector($file_widget);

Gtk::main();
?>

Hi again,

I used the program you suggested with the code above and my dos-prompt went berserk with:
(php.exe:1996): GLib-GObject-CRITICAL **: g_type_get_qdata: assertion `node != NULL' failed
repeating the message in an endless loop.

Cheers,
Stigur

[cweiske]

Sorry for that. Until I fixed Dev_GuiInspector, you have to do this on your own with get_children() and so.

[stigur]

OK,

Thank you for your help!

Cheers,
Stigur

[stigur]

Hi,

When using get_children, I get the same result, but when using the deprecated function children, it works.
So maybe get_children is broken and if you are using it in Dev_GuiInspector, maybe the function and not your program is broken.

Thought the information could be of use to you.

Cheers,
Stig

[cweiske]

It doesn't work for me here, independent of what I use. children() is merely an alias for get_children().

[cweiske]

I reported a bug on gnome:
http://bugzilla.gnome.org/show_bug.cgi?id=348235

Let's see what they say.

[stigur]

I'll dare on more question:

Can you show me the correct syntax for connecting to the "sub"-object?
(GtkComboBox is listed in the array produced by children() and seems to be the one sending the signal ('changed'))
I do :

$choose_file = new GtkFileChooserButton('Open File', Gtk::FILE_CHOOSER_ACTION_OPEN);
$choose_button = $choose_file->GtkComboBox;

$choose_button->connect_simple('changed', array ($this, 'do_something'));

I was inspired by looking in the FAQ, but the last line fails, what to do?

Cheers,
Stigur

[cweiske]

I doubt that "GtkComboBox" is a widget, it looks like a classname.