gtkOffscreenWindowNew(show = TRUE)
gtkOffscreenWindowGetPixmap(object)
gtkOffscreenWindowGetPixbuf(object)
gtkOffscreenWindow(show = TRUE)
GObject +----GInitiallyUnowned +----GtkObject +----GtkWidget +----GtkContainer +----GtkBin +----GtkWindow +----GtkOffscreenWindow
GtkBuildable
.GtkOffscreenWindow
is strictly intended to be used for obtaining
snapshots of widgets that are not part of a normal widget hierarchy.
It differs from gtkWidgetGetSnapshot
in that the widget you
want to get a snapshot of need not be displayed on the user's screen
as a part of a widget hierarchy. However, since GtkOffscreenWindow
is a toplevel widget you cannot obtain snapshots of a full window
with it since you cannot pack a toplevel widget in another toplevel. The idea is to take a widget and manually set the state of it,
add it to a GtkOffscreenWindow
and then retrieve the snapshot
as a GdkPixmap
or GdkPixbuf
.
GtkOffscreenWindow
derives from GtkWindow
only as an implementation
detail. Applications should not use any API specific to GtkWindow
to operate on this object. It should be treated as a GtkBin
that
has no parent widget. When contained offscreen widgets are redrawn, GtkOffscreenWindow
will emit a "damage-event"
signal.gtkOffscreenWindow
is the equivalent of gtkOffscreenWindowNew
.