X Version 11 (1 September 1988) XSetSelectionOwner(XS)
NAME
XSetSelectionOwner, XGetSelectionOwner, XConvertSelection -
manipulate window selection
SYNTAX
XSetSelectionOwner(display, selection, owner, time)
Display *display;
Atom selection;
Window owner;
Time time;
Window XGetSelectionOwner(display, selection)
Display *display;
Atom selection;
XConvertSelection(display, selection, target, property,
requestor, time)
Display *display;
Atom selection, target;
Atom property;
Window requestor;
Time time;
ARGUMENTS
display Specifies the connection to the X server.
owner Specifies the owner of the specified selection
atom. You can pass a window or None.
property Specifies the property name. You also can pass
None.
requestor Specifies the requestor.
selection Specifies the selection atom.
target Specifies the target atom.
time Specifies the time. You can pass either a
timestamp or CurrentTime.
DESCRIPTION
The XSetSelectionOwner function changes the owner and last-
change time for the specified selection and has no effect if
the specified time is earlier than the current last-change
time of the specified selection or is later than the current
X server time. Otherwise, the last-change time is set to
the specified time, with CurrentTime replaced by the current
server time. If the owner window is specified as None, then
the owner of the selection becomes None (that is, no owner).
Otherwise, the owner of the selection becomes the client
executing the request.
If the new owner (whether a client or None) is not the same
as the current owner of the selection and the current owner
is not None, the current owner is sent a SelectionClear
event. If the client that is the owner of a selection is
later terminated (that is, its connection is closed) or if
the owner window it has specified in the request is later
destroyed, the owner of the selection automatically reverts
to None, but the last-change time is not affected. The
selection atom is uninterpreted by the X server.
XGetSelectionOwner returns the owner window, which is
reported in SelectionRequest and SelectionClear events.
Selections are global to the X server.
XSetSelectionOwner can generate BadAtom and BadWindow
errors.
The XGetSelectionOwner function returns the window ID
associated with the window that currently owns the specified
selection. If no selection was specified, the function
returns the constant None. If None is returned, there is no
owner for the selection.
XGetSelectionOwner can generate a BadAtom error.
XConvertSelection requests that the specified selection be
converted to the specified target type:
⊕ If the specified selection has an owner, the X server
sends a SelectionRequest event to that owner.
⊕ If no owner for the specified selection exists, the X
server generates a SelectionNotify event to the
requestor with property None.
In either event, the arguments are passed on unchanged.
There are two predefined selection atoms: PRIMARY and
SECONDARY.
XConvertSelection can generate BadAtom and BadWindow errors.
DIAGNOSTICS
BadAtom A value for an Atom argument does not name a
defined Atom.
BadWindow A value for a Window argument does not name a
defined Window.
SEE ALSO
Xlib - C Language X Interface
(printed 2/12/90) (1 September 1988) XSetSelectionOwner(XS)