A function used by gtk.tree_selection.TreeSelection.setSelectFunction 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.
true, if the selection state of the row can be toggled
A function used by gtk.tree_selection.TreeSelection.setSelectFunction 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.