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Today's Topics:
1. [Bug 369335] New: Gtk::Adjustment ignores initial value in
constructor (gtkmm (bugzilla.gnome.org))
----------------------------------------------------------------------
Message: 1
Date: Thu, 2 Nov 2006 10:22:43 +0000 (UTC)
From: "gtkmm (bugzilla.gnome.org)"
<[EMAIL PROTECTED]>
Subject: [gtkmm bugzilla] [Bug 369335] New: Gtk::Adjustment ignores
initial value in constructor
To: [EMAIL PROTECTED]
Message-ID: <[EMAIL PROTECTED]/>
Content-Type: text/plain; charset=utf-8
Do not reply to this via email (we are currently unable to handle email
responses and they get discarded). You can add comments to this bug at
http://bugzilla.gnome.org/show_bug.cgi?id=369335
gtkmm | general | Ver: 2.9.x
Summary: Gtk::Adjustment ignores initial value in constructor
Product: gtkmm
Version: 2.9.x
Platform: Other
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: general
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
QAContact: [EMAIL PROTECTED]
GNOME version: Unspecified
GNOME milestone: Unspecified
Forwarded from:
https://launchpad.net/distros/ubuntu/+source/gtkmm2.4/+bug/69806
Gtk::Adjustment seems to ignore the initial value it is given in its
constructor. In the attached example, an adjustment is initialized to 1 and
used with a SpinButton. When you run it though, the SpinButton has a value of 0
and get_value() returns 0. Using set_value() in the Window's constructor, on
the other hand, correctly sets the initial value.
I was able to reproduce this bug on two computers running Ubuntu 6.10 but not
on another one running Ubuntu 6.06. Using older versions of GCC doesn't seem to
help.
See attached sources files.
http://librarian.launchpad.net/4945898/main.cpp
http://librarian.launchpad.net/4945899/Makefile
On a brief glance:
Code in gtkmm 2.8.5:
Adjustment::Adjustment(double value,
double lower, double upper,
double step_increment, double page_increment,
double page_size)
:
Glib::ObjectBase(0), //Mark this class as gtkmmproc-generated, rather than a
custom class, to allow vfunc optimisations.
Gtk::Object(Glib::ConstructParams(adjustment_class_.init(), (char*) 0))
{
gobj()->lower = lower;
gobj()->upper = upper;
gobj()->step_increment = step_increment;
gobj()->page_increment = page_increment;
gobj()->page_size = page_size;
changed();
set_value(value);
}
void Adjustment::set_value(double value)
{
gtk_adjustment_set_value(gobj(), value);
}
(For some reason set_value() doesn't use
gobj()->value = value;
changed();
as the other set_*() do. But maybe that's a red herring.)
----
Code in gtkmm 2.10.2:
Adjustment::Adjustment(double value, double lower, double upper, double
step_increment, double page_increment, double page_si
ze)
:
Glib::ObjectBase(0), //Mark this class as gtkmmproc-generated, rather than a
custom class, to allow vfunc optimisations.
Gtk::Object(Glib::ConstructParams(adjustment_class_.init(), "value", value,
"lower", lower, "upper", upper, "step_increment
", step_increment, "page_increment", page_increment, "page_size", page_size,
(char*) 0))
{
}
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