Most users don't know that there are quick search capabilities in tree views.

To make it more obvious that there are quick search capabilities, I added a contextual menu item with the title "Show Quick Search".

I didn't find a clean way to hide or show the quick search. I had to use reflection to get to the QuickSearch object:

    
    private static QuickSearch getQuickSearch(TreeView view) {
        try {
            Field field = TreeView.class.getDeclaredField("qs");
            field.setAccessible(true);
            return (QuickSearch) field.get(view);
        } catch (NoSuchFieldException ex) {
            return null;
        } catch (IllegalArgumentException ex) {
            return null;
        } catch (IllegalAccessException ex) {
            return null;
        }
    }

Can you please provide a "public api" way to show and hide the quick search ?