XtOwnSelection, XtOwnSelectionIncremental, XtDisownSelection - set selection owner
XtOwnSelection(w, selection, time, convert_proc, lose_selection, done_proc)
XtOwnSelectionIncremental(w, selection, time, convert_callback, lose_callback, done_callback, cancel_callback, client_data)
XtDisownSelection(w, selection, time)
Specifies the procedure that is to be called whenever someone
requests the current value of the selection.
Specifies the procedure that is called after the requestor
has received the selection or NULL if the owner is not interested in being
Specifies the procedure that is to be called whenever the
widget has lost selection ownership or NULL if the owner is not interested
in being called back.
Specifies an atom that describes the type of the selection
Specifies the timestamp that indicates when the selection
ownership should commence or is to be relinquished.
Specifies the widget that wishes to become the owner or to
The XtOwnSelection function informs the Intrinsics selection mechanism that a widget believes it owns a selection. It returns True if the widget has successfully become the owner and False otherwise. The widget may fail to become the owner if some other widget has asserted ownership at a time later than this widget. Note that widgets can lose selection ownership either because someone else asserted later ownership of the selection or because the widget voluntarily gave up ownership of the selection. Also note that the lose_selection procedure is not called if the widget fails to obtain selection ownership in the first place.
The XtOwnSelectionInrcremental procedure informs the Intrinsics incremental selection mechanism that the specified widget wishes to own the selection. It returns True if the specified widget successfully becomes the selection owner or False otherwise. For more information about selection, target, and time, see Section 2.6 of the Inter-Client Communication Conventions Manual.
A widget that becomes the selection owner using XtOwnSelectionIncremental may use XtDisownSelection to relinquish selection ownership.
The XtDisownSelection function informs the Intrinsics selection mechanism that the specified widget is to lose ownership of the selection. If the widget does not currently own the selection either because it lost the selection or because it never had the selection to begin with, XtDisownSelection does nothing.
After a widget has called
convert procedure is not called even if a request arrives later with a timestamp
during the period that this widget owned the selection. However, its done
procedure will be called if a conversion that started before the call to
finishes after the call to
X Toolkit Intrinsics -- C Language Interface
Xlib C Language X Interface