Sets the GtkCellLayoutDataFunc to use for cell_layout. This function
is used instead of the standard attributes mapping for setting the
column value, and should set the value of cell_layout's cell renderer(s)
as appropriate. func may be NULL to remove and older one.
Since 2.4
Sets the GtkCellLayoutDataFunc to use for cell_layout. This function is used instead of the standard attributes mapping for setting the column value, and should set the value of cell_layout's cell renderer(s) as appropriate. func may be NULL to remove and older one. Since 2.4