Window XGetSelectionOwner(display, selection)
XConvertSelection(display, selection, target, property, requestor, time)
Atom selection, target;
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:
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.
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