gtk:cell-renderer-start-editing (renderer event widget path background area flags)

renderer -- a gtk:cell-renderer object
event -- a gdk:event event
widget -- a gtk:widget object that received the event
path -- a string for the widget dependent representation of the event location, for example for the gtk:tree-view widget, a string representation of a gtk:tree-path instance
background -- a gdk:rectangle instance for the background area as passed to the gtk:cell-renderer-render function
area -- a gdk:rectangle instance for the cell area as passed to the gtk:cell-renderer-render function
flags -- a gtk:cell-renderer-state render flags

The new gtk:cell-editable widget, or nil.

Passes an activate event to the cell renderer for possible processing.