XtOwnSelection(Xt) X Version 11 (Release 5) XtOwnSelection(Xt)
6 January 1993
Name
XtOwnSelection - set selection owner
Syntax
Boolean XtOwnSelection(w, selection, time, convert_proc,
lose_selection, done_proc)
Widget w;
Atom selection;
Time time;
XtConvertSelectionProc convert_proc;
XtLoseSelectionProc lose_selection;
XtSelectionDoneProc done_proc;
void XtDisownSelection(w, selection, time)
Widget w;
Atom selection;
Time time;
Arguments
convertproc
Specifies the procedure that is to be called whenever someone
requests the current value of the selection.
doneproc Specifies the procedure that is called after the requestor has
received the selection or NULL if the owner is not interested
in being called back.
loseselection
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.
selection Specifies an atom that describes the type of the selection for
example:
XAPRIMARY, XASECONDARY, or XACLIPBOARD
time Specifies the timestamp that indicates when the selection own-
ership should commence or is to be relinquished.
w Specifies the widget that wishes to become the owner or to
relinquish ownership.
Description
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 loseselection procedure is not called if
the widget fails to obtain selection ownership in the first place.
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, XtDisown-
Selection does nothing.
After a widget has called XtDisownSelection, its 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 XtDisownSelec-
tion finishes after the call to XtDisownSelection.
See also
XtAppGetSelectionTimeout(Xt) and XtGetSelectionValue(Xt).
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface