Function type for determining whether the row pointed to by iter should be rendered as a separator. A common way to implement this is to have a boolean column in the model, whose values the #GtkTreeViewRowSeparatorFunc returns.
iter
the #GtkTreeModel
a #GtkTreeIter pointing at a row in model
model
Function type for determining whether the row pointed to by
itershould be rendered as a separator. A common way to implement this is to have a boolean column in the model, whose values the #GtkTreeViewRowSeparatorFunc returns.