Explicitly sets the currently focused cell to renderer.
This is generally called by implementations of gtk.CellAreaClass.CellAreaClass.focus|gtk.CellAreaClass.focus or gtk.CellAreaClass.CellAreaClass.event|gtk.CellAreaClass.event, however it can also be used to implement functions such as TreeView.setCursorOnCell.
the gtk.CellRenderer to give focus to
3.0
Explicitly sets the currently focused cell to renderer.
This is generally called by implementations of gtk.CellAreaClass.CellAreaClass.focus|gtk.CellAreaClass.focus or gtk.CellAreaClass.CellAreaClass.event|gtk.CellAreaClass.event, however it can also be used to implement functions such as TreeView.setCursorOnCell.