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gtk_test_init() hardcodes the locale to "C", so the --direction
option is useful to check reftests in rtl.

It works right now, lets keep it that way.

If we let them hold onto their X resources until finalize,
it is too late.

We need to be able to drop X resources before finalization.

Dispose does chain up, and the parent class' dispose expects
that the object has been fully constructed.

Group the buttons on each side in a box, and give them different
style classes, so themes can differentiate (this is partially a
workaround for limitations in our css selectors). The boxes also
let us add a margin below the buttons, without affecting the
allocation of the buttons themselves.

The icon is called window-close-symbolic.

This allows themes to differentiate between regular buttons
in a title bar, and window buttons.

Manually create the label, so that we can set its margins.

https://bugzilla.gnome.org/show_bug.cgi?id=703313

This is an experiment towards how we want client-side titlebars
to look.

This is useful when adding close buttons in custom titlebars.

Make the listbox demo follow the naming convention of the
other demos.

We have to uglify the deprecation messages to make gtk-doc
handle them. The get turned into XML attributes, and there
is no automatic quoting to protect quotes in the text.

Use GtkMenuItem for menus with only text or GMenu for those
with icons for "nouns" and just text for "verbs".

If a menu is opened and it doesn't fit entirely below or above
the menu bar, gtk+ will place it on top. The button release will
then activate the popup item that happens to appear under the
cursor. Avoid this by ignoring release events if they originated
in the parent menu bar and the duration of the press was too short.

https://bugzilla.gnome.org/show_bug.cgi?id=703069

https://bugzilla.gnome.org/show_bug.cgi?id=702981

To make the testsuite happy.

We want to use GtkIconTheme instead. It is worth noting that
the parts that remain undeprecated are GtkIconSize and gtk_icon_size_lookup.

Just use the first pixbuf in the default list.

We don't have icons rendered at arbitrary sizes and we have better
APIs that aren't restricted to GtkIconSizes.

Use 'F10' by default.

Just pick good defaults. The a11y team confirmed that they don't
rely on them.

Just use GTK_CORNER_TOP_LEFT and allow it to be changed with
gtk_scrolled_window_set_placement().

The standard icon themes have built in fallbacks.

And hardcode them to reasonable values.

It is disabled by default

It is only used by the deprecated color selector widget.

They are both enabled by default.

GtkImageMenuItem images can still be enabled selectively by the app author
using the always-show-image property on the item.