Adds sibling to renderer’s focusable area, focus will be drawn around renderer and all of its siblings if renderer can focus for a given row.
Events handled by focus siblings can also activate the given focusable renderer.
the gtk.CellRenderer expected to have focus
the gtk.CellRenderer to add to renderer’s focus area
3.0
Adds sibling to renderer’s focusable area, focus will be drawn around renderer and all of its siblings if renderer can focus for a given row.
Events handled by focus siblings can also activate the given focusable renderer.