set_cursor_from_name
Description:
Sets the cursor to be shown when the pointer hovers over the widget.
This is a utility function that creates a cursor via [ctor@Gdk.Cursor.new_from_name] and then sets it on this with [method@Gtk.Widget.set_cursor]. See those functions for details.
On top of that, this function allows name to be `NULL`, which will do the same as calling [method@Gtk.Widget.set_cursor] with a 
      `NULL` cursor.
Parameters:
| this | a widget | 
| name | the name of the cursor |