GTK_CELL_RENDERER_MODE_INERT; The cell is just for display and cannot be interacted with. Note that this doesn’t mean that eg. the row being drawn can’t be selected -- just that a particular element of it cannot be individually modified.

GTK_CELL_RENDERER_MODE_ACTIVATABLE; The cell can be clicked.

GTK_CELL_RENDERER_MODE_EDITABLE; The cell can be edited or otherwise modified.

GTK_CELL_RENDERER_SELECTED; The cell is currently selected, and probably has a selection colored background to render to.

GTK_CELL_RENDERER_PRELIT; The mouse is hovering over the cell.

GTK_CELL_RENDERER_INSENSITIVE; The cell is drawn in an insensitive manner

GTK_CELL_RENDERER_SORTED; The cell is in a sorted row

GTK_CELL_RENDERER_FOCUSED; The cell is in the focus row.

GTK_CELL_RENDERER_EXPANDABLE; The cell is in a row that can be expanded

GTK_CELL_RENDERER_EXPANDED; The cell is in a row that is expanded