This signal is a sign for the cell renderer to update its value from the cell_editable.
This signal is meant to indicate that the cell is finished editing, and the cell_editable widget is being removed and may subsequently be destroyed.
Emits the editing-done signal.
Get the main Gtk struct
the main Gtk struct as a void*
Emits the remove-widget signal.
Begins editing on a cell_editable.
The GtkCellEditable interface must be implemented for widgets to be usable to edit the contents of a gtk.TreeView cell. It provides a way to specify how temporary widgets should be configured for editing, get the new value, etc.