Trying to setup a callback that will propagate changes from a
cell(and editable GtkCellRendererText) to my model.
Can't seem to find any way to get the actual GtkCellRendererText
CellRendererText has an addOnEdited but I can't find a way to get
the CellRendererTExt for a TreeViewColumn ;/
All the examples I've seen create the renderer programmatically,
while I'm using glade.
https://github.com/gtkd-developers/GtkD/blob/master/demos/gtkD/DemoMultiCellRenderer/DemoMultiCellRenderer.d
While I could ID the cell renderer in glade, I'd like to get it
programmatically.
Any ideas?