Re: Splash screen as widget

["George Brink" <siberianowl yahoo com>]

John,
Thank you for quick reply.

By the way, why splash screen is not in the default set of library widgets? 
I believe it is very common thing for almost all modern applications...

> > 1) I think command
> >        splash = MY_SPLASH(g_object_new(my_splash_get_type(), NULL));
> > should create new window (since GtkWindow is a parent) but how can I set 
> > to
> > this new window GTK_WINDOW_POPUP as GtkWindowType?
>
> In your _init() function, do
>
>        gtk_window_set_type_hint( GTK_WINDOW( splash ),
>                GDK_WINDOW_TYPE_HINT_SPLASHSCREEN );
Sorry, it did not do anything useful. I still get the normal window with 
title and max/min/close icons. And I see splash window in task-bar (which is 
the main reason I'd like to open window with GTK_WINDOW_POPUP).

> > 2) I am inheriting MySplash from GtkWindow:
> > But when I am trying to cast MySplash as GtkWindow
> > I get a run-time warning:
> > GLib-GObject-WARNING **: invalid cast from `MySplash' to `GtkWindow'
> Are you setting GtkWindow as the parent class in your type creator?
Found mistake... I thought it would be enough to use GtkWindow & 
GtkWindowClass as first members of my own structures, and forget about the 
first parameter to gtk_type_unique(), I did set it up to GTK_TYPE_WIDGET 
(copy-paste from tutorial). As soon as I change it to GTK_TYPE_WINDOW - 
everything starts to work.

That rises another question: Tutorial I read, suggests to use 
g_type_register_static() with GTypeInfo structure instead of 
gtk_type_unique() with GtkTypeInfo. Author of tutorial does not explain why 
he prefer g_type_register_static() over gtk_type_unique(). I guess, first 
function registers class on GLib level and second on GTK level? My question 
is what is the difference between this two approaches? Which one better to 
use and when?


> >        while(gtk_events_pending()) {
> >                gtk_main_iteration();
> >        }
>
> That's from a rather old tutorial, better to use:
>
>        while( g_main_context_iteration( NULL, FALSE ) )
>                ;
Why is that better? One is for gtk events only, other also works with glib 
events?


> Here's the splash class from my app, for what it's worth:
Thank you, it gave me some ideas :)