Re: [Vala] screen-changed signal emitted before constructor is invoked?
- From: Arto Karppinen <arto karppinen mail suomi net>
- To: Yu Feng <rainwoodman gmail com>
- Cc: gtk-devel-list <gtk-devel-list gnome org>, vala-list <vala-list gnome org>
- Subject: Re: [Vala] screen-changed signal emitted before constructor is invoked?
- Date: Tue, 06 Jan 2009 10:30:11 +0200
You should probably init you private member variable like this:
public class test : Object {
// Set it here.
public some_class var = new some_class();
test()
{
....
}
}
Yu Feng wrote:
Dear developers,
I created an Widget and overrode the constructor of the GObject
interface to initialize private members.
Then I listened to screen-changed signal of the widget. in the signal
handler a private member was accessed;
The private member was not properly initialized when the first
screen_changed signal is emitted. Later on I added debug messages in the
constructor and screen-changed signal handler; it turns out that the
handler was invoked *before* the constructor.
However, the construction of the GObject is not yet finished before the
constructor function is invoked (at least to my understanding); Should
this behavior be a bug?
This is a serious interference with VALA where there is no way to
specify the instance _init functions.
I am also ccing to vala-list to see if the vala gurus can advice with a
clean workaround.
Thanks,
Yu
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--
Arto Karppinen
------------------------------
arto karppinen iki fi
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