[ CCode ( instance_pos = 4.9 ) ]
public delegate bool TreeSelectionFunc (TreeSelection selection, TreeModel model, TreePath path, bool path_currently_selected)
A function used by set_select_function to filter whether or not a row may be selected.
It is called whenever a row's state might change. A return value of true indicates to selection
that it is okay to change the selection.
| selection | |
| model |
A TreeModel being viewed |
| path |
The TreePath of the row in question |
| path_currently_selected |
true, if the path is currently selected |
| data |
user data |
|
true, if the selection state of the row can be toggled |