RE: problem: gtk_image gives critical error

[Deependra Shekhawat <openbysource yahoo co in>]

Hello,

It doesn't work.
The error is still there.

Regards

--- Sailaxmi korada  <sai korada xilinx com> wrote:

>  void on_butt_clicked(GtkButton *button,gpointer
>  data)
>  {
>       struct splash *ptr;
>       ptr= malloc(sizeof(splash));
>       ptr = data;
> }
> g_signal_connect(G_OBJECT(button1),
>                        "clicked",
>                        G_CALLBACK(on_butt_clicked),
>                        (gpointer) p);
>
> Try doing in the above fashion, it should solve your
> problem
>
>
> -----Original Message-----
> From: gtk-app-devel-list-bounces gnome org
> [mailto:gtk-app-devel-list-bounces gnome org] On
> Behalf Of Deependra
> Shekhawat
> Sent: Tuesday, April 18, 2006 4:24 PM
> To: Gtk developers
> Subject: Re: problem: gtk_image gives critical error
>
> Dear,
>
> When I print the address of p in the funcl it prints
> a
>
> address.
> In the callback function it also prints the same for
>
> ptr.
> Then what's the problem.
> Also I use structures to pass data all the time to
> the callback function then there's no error but with
> this image widget there seems any problem.
> Please clarify if I have any alternatives 
>
> Regards
>
> --- "David Necas (Yeti)" <yeti physics muni cz>
> wrote:
>
> > On Tue, Apr 18, 2006 at 03:05:51AM -0700,
> Deependra
> > Shekhawat wrote:
> > > Hello friends,
> > > This is my code:
> > >
> > > struct splash
> > > {
> > >   GtkWidget *splash_image;
> > > };
> > > void func1(void)
> > > {
> > >   GtkWidget *img;
> > >   struct splash p;
> >
> > This structure is created on stack and exists only
> > until the
> > function func1 exits.
> >
> > >   img=gtk_image_new();
> > >   p.splash_image=img;     
> > >   
> > >   g_signal_connect(G_OBJECT(button1),
> > >                    "clicked",
> > >                    G_CALLBACK(on_butt_clicked),
> > >                    (gpointer) &p);
> >
> > Therefore &p becomes invalid immediately after you
> > pass it
> > to g_signal_connect().
> >
> > > }
> > >
> > > void on_butt_clicked(GtkButton *button,gpointer
> > data)
> > > {
> > >   struct splash *ptr;
> > >   ptr=(struct splash *)data;
> > >
> > >   //some code is here
> > >   
> > >   //following line gives error at execution time.
gtk_image_set_from_pixbuf(GTK_IMAGE((GtkWidget*)ptr->splash_image),buffer);
> > > }
> > >
> > > Error is:
> > > (splash_screen:3549): Gtk-CRITICAL **: file
> > > gtkimage.c: line 772
> (gtk_image_set_from_pixbuf):
> > >  assertion `GTK_IS_IMAGE (image)' failed
> >
> > So, you are accessing some random piece of stack
> > here.
> >
> > Yeti
> >
> >
> > --
> > That's enough.
>
>
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