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.
%TRUE if the row is a separator
See Implementation
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.