Determine the owner of the given selection. Note that the return value may be owned by a different process if a foreign window was previously created for that window, but a new foreign window will never be created by this call. Since 2.2
a GdkDisplay.
an atom indentifying a selection.
if there is a selection owner for this window, and it is a window known to the current process, the GdkWindow that owns the selection, otherwise NULL.
See Implementation
Determine the owner of the given selection. Note that the return value may be owned by a different process if a foreign window was previously created for that window, but a new foreign window will never be created by this call. Since 2.2