GDK_SELECTION_CLIPBOARD for selection.
(GDK_NONE is supported as a synonym for GDK_SELECTION_CLIPBOARD
for backwards compatibility reasons.)
The currently-selected object or text should be provided on the clipboard
identified by GDK_SELECTION_PRIMARY. Cut/copy/paste menu items
conceptually copy the contents of the GDK_SELECTION_PRIMARY clipboard
to the default clipboard, i.e. they copy the selection to what the
user sees as the clipboard.gtkClipboardGetForDisplay(display, selection = "GDK_SELECTION_CLIPBOARD")displayselectionGdkAtom which identifies the clipboard
to use.GtkClipboard] the appropriate clipboard object. If no
clipboard already exists, a new one will
be created. Once a clipboard object has
been created, it is persistent and, [ transfer none ]GDK_NONE is the same as using gdk_atom_intern
("CLIPBOARD", FALSE). See
http://www.freedesktop.org/Standards/clipboards-spec (http://www.freedesktop.org/Standards/clipboards-spec)
for a detailed discussion of the "CLIPBOARD" vs. "PRIMARY"
selections under the X window system. On Win32 the
GDK_SELECTION_PRIMARY clipboard is essentially ignored.)
It's possible to have arbitrary named clipboards; if you do invent
new clipboards, you should prefix the selection name with an
underscore (because the ICCCM requires that nonstandard atoms are
underscore-prefixed), and namespace it as well. For example,
if your application called "Foo" has a special-purpose
clipboard, you might call it "_FOO_SPECIAL_CLIPBOARD".
Since 2.2