XtOwnSelection(3Xt)XtOwnSelection(3Xt)NAME
XtOwnSelection, XtOwnSelectionIncremental, XtDisownSelection - set
selection owner
SYNOPSIS
Boolean XtOwnSelection(w, selection, time, convert_proc, lose_selec‐
tion, done_proc)
Widget w;
Atom selection;
Time time;
XtConvertSelectionProc convert_proc;
XtLoseSelectionProc lose_selection;
XtSelectionDoneProc done_proc;
Boolean XtOwnSelectionIncremental(w, selection, time, convert_callback,
lose_callback, done_callback, cancel_callback, client_data)
Widget w;
Atom selection;
Time time;
XtConvertSelectionIncrProc convert_callback;
XtLoseSelectionIncrProc lose_callback;
XtSelectionDoneIncrProc done_callback;
XtCancelConvertSelectionProc cancel_callback;
XtPointer client_data;
void XtDisownSelection(w, selection, time)
Widget w;
Atom selection;
Time time;
ARGUMENTS
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 called back. 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 (for example, XA_PRI‐
MARY, XA_SECONDARY, or XA_CLIPBOARD). 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 relinquish ownership.
DESCRIPTION
The XtOwnSelection function informs the Intrinsics selection mechanism
that a widget believes it owns a selection. It returns True if the wid‐
get has successfully become the owner and False otherwise. The widget
may fail to become the owner if some other widget has asserted owner‐
ship at a time later than this widget. Note that widgets can lose
selection ownership either because someone else asserted later owner‐
ship of the selection or because the widget voluntarily gave up owner‐
ship 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 incre‐
mental 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 Commu‐
nication Conventions Manual.
A widget that becomes the selection owner using XtOwnSelectionIncremen‐
tal may use XtDisownSelection to relinquish selection ownership.
The XtDisownSelection function informs the Intrinsics selection mecha‐
nism 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 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 proce‐
dure will be called if a conversion that started before the call to
XtDisownSelection finishes after the call to XtDisownSelection.
SEE ALSOXtAppGetSelectionTimeout(3Xt), XtGetSelectionValue(3Xt)
X Toolkit Intrinsics -- C Language Interface
Xlib C Language X Interface
XtOwnSelection(3Xt)
