widget that received the event
widget-dependent string representation of the event location; e.g. for gtk.TreeView, a string representation of gtk.TreePath
background area as passed to CellRenderer.render
cell area as passed to CellRenderer.render
render flags
TRUE if the event was consumed/handled
Passes an activate event to the cell renderer for possible processing. Some cell renderers may use events; for example, gtk.CellRendererToggle toggles when it gets a mouse click.