TreeSelectionForeachFunc   
    typealias TreeSelectionForeachFunc = (model: TreeModel, path: TreePath, iter: TreeIter) -> Unit(source)
A function used by gtk_tree_selection_selected_foreach() to map all selected rows. It will be called on every selected row in the view.
- param - modelThe- GtkTreeModelbeing viewed
- param - pathThe- GtkTreePathof a selected row
- param - iterA- GtkTreeIterpointing to a selected row