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.
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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.