Re: strange font/style behaviour

[Pavel Rousnak <pr rpb ru>]

> In a gtk perl program I working on, the user can open a new window with a 
> Gtk::Text in it.
>
> When changing the Gtk::Text font with:
>
> $text->style->font(Gtk::Gdk::Font->load($font_name));
>
> the Gtk::Text changes its font as expected.  However, the whole application
> change its font to the $font_name.
>
> What is even stranger the main window, behind the Text window, changes it fonts 
> as it gets redrawed by X11.
>
> This seems to be a bug with gtk, but I could be using fonts in the wrong way.
>
> any clues about why this is happening?

When an application starts each widget is assigned the same style - default 
one.
So styles may be shared between different widgets. To set font/colors for
a widget you have to create new style:

my $style = $widget->get_style();
my $new_style = $style->copy();
$new_style->font($my_font);
$widget->set_style($new_style);

or (if you want to create a group of widgets with new style)

my $style = Gtk::Widget->get_default_style();
my $new_style = $style->copy();
$new_style->font($my_font);
Gtk::Widget->push_style($new_style);     # set new default style

<create some widgets - with new style>
Gtk::Widget->pop_style();                # restore default style


There is another way: gtkrc file.


-- 
Best regards
Pavel.