This example code produces the same Glib errors in my machine.
/**************************************/
/* CODE START */
/**************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gtkmm.h>
class MyPanel : public Gtk::HBox
{
public:
static MyPanel *Create();
void Release();
private:
MyPanel();
~MyPanel();
void OnComboChanged();
Gtk::Label * label;
Gtk::ComboBoxEntryText * combo;
};
MyPanel::MyPanel() : Gtk::HBox()
{
label = new Gtk::Label("select one:");
combo = new Gtk::ComboBoxEntryText();
}
MyPanel::~MyPanel()
{
if (combo)
{
delete combo;
combo = NULL;
}
if (label)
{
delete label;
label = NULL;
}
}
void MyPanel::OnComboChanged()
{
Release();
}
MyPanel *MyPanel::Create()
{
int retVal = 0;
MyPanel *mypanel = NULL;
try
{
mypanel = new MyPanel();
}
catch(...)
{
retVal = 1;
}
if (!retVal)
{
mypanel -> combo -> append_text("green");
mypanel -> combo -> append_text("blue");
mypanel -> combo -> append_text("white");
mypanel -> combo -> get_entry() ->
signal_changed().connect(sigc::mem_fun(mypanel, &MyPanel::OnComboChanged));
}
if (!retVal)
{
mypanel -> pack_start(*(mypanel -> label), false, false, 2);
mypanel -> pack_start(*(mypanel -> combo), true, true, 2);
mypanel -> show_all();
}
if (!retVal)
{
return mypanel;
}
else
{
if (mypanel != NULL)
{
mypanel -> Release();
mypanel = NULL;
}
return NULL;
}
}
void MyPanel::Release()
{
delete this;
}
int main(int argc, char *argv[])
{
Gtk::Main kit(argc, argv);
int retVal = 0;
Gtk::Window *window = NULL;
try
{
window = new Gtk::Window();
}
catch(...)
{
retVal = 1;
}
if (!retVal)
{
MyPanel *panel = MyPanel::Create();
if (panel == NULL)
{
retVal = 1;
}
else
{
window -> add(*panel);
}
}
if (!retVal)
{
Gtk::Main::run(*window);
}
if (window != NULL)
{
delete window;
window = NULL;
}
return retVal;
}
/**************************************/
/* CODE END */
/**************************************/
No errors where reported by valgrind:
==2838== Memcheck, a memory error detector.
==2838== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
==2838== Using LibVEX rev 1854, a library for dynamic binary translation.
==2838== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
==2838== Using valgrind-3.3.1-Debian, a dynamic binary instrumentation
framework.
==2838== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
==2838== For more details, rerun with: -v
==2838==
(test:2838): GLib-GObject-WARNING **: instance with invalid (NULL) class
pointer
(test:2838): GLib-GObject-CRITICAL **: g_signal_handlers_unblock_matched:
assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
(test:2838): GLib-GObject-CRITICAL **: g_object_notify: assertion
`G_IS_OBJECT (object)' failed
I hope this helps.
Murray Cumming wrote:
>
> On Fri, 2010-01-15 at 14:18 -0800, siagogam wrote:
>> I'm still curious about this Glib errors but, as with the new approach
>> no
>> errors appeared, my priority now is continue with my development. Of
>> course,
>> I can give more feedback about the error or perform any specific test
>> if
>> suggested.
>
> Valgrind's memcheck might give some clue.
>
> Otherwise, you need to reduce it to a simple test case.
>
> --
> [email protected]
> www.murrayc.com
> www.openismus.com
>
> _______________________________________________
> gtkmm-list mailing list
> [email protected]
> http://mail.gnome.org/mailman/listinfo/gtkmm-list
>
>
--
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