static void select_range (ModestAttachmentsView *atts_view, ModestAttachmentView *att1, ModestAttachmentView *att2);
static void clipboard_get (GtkClipboard *clipboard, GtkSelectionData *selection_data,
guint info, gpointer userdata);
-static void clipboard_clear (GtkClipboard *clipboard, gpointer userdata);
static void own_clipboard (ModestAttachmentsView *atts_view);
static guint signals[LAST_SIGNAL] = {0};