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       XSetSelectionOwner, XGetSelectionOwner, XConvertSelection - manipulate window selection


       int XSetSelectionOwner(Display *display, Atom selection, Window owner, Time time);

       Window XGetSelectionOwner(Display *display, Atom selection);

       int XConvertSelection(Display *display, Atom selection, Atom target, Atom property, Window
              requestor, Time time);


       display   Specifies the connection to the X server.

       owner     Specifies the owner of the specified selection atom.  You can pass a window or

       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.


       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.

       The arguments are passed on unchanged in either of the events.  There are two predefined
       selection atoms: PRIMARY and SECONDARY.

       XConvertSelection can generate BadAtom and BadWindow errors.


       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.


       Xlib - C Language X Interface