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Hi, I noticed that the only way to programmatically (java) uncheck the checkmark on listbox header is to remove all listitems from the listbox:

for (Iterator<component> itemIterator = listbox.getChildren().iterator(); itemIterator.hasNext();) {
Component item = itemIterator.next();
if (!((item instanceof Listhead) || (item instanceof Auxhead) || (item instanceof Listfoot))) {
itemIterator.remove();
}
}

The problem is that if listbox has no listitems, I can't uncheck the checkmark. As a workaround, I add a not visible listitem, so the listbox is never empty. Is there a better way to

Hi, I noticed that the only way to programmatically (java) uncheck the checkmark on listbox header is to remove all listitems from the listbox:

for (Iterator<component> itemIterator = listbox.getChildren().iterator(); itemIterator.hasNext();) {
Component item = itemIterator.next();
if (!((item instanceof Listhead) || (item instanceof Auxhead) || (item instanceof Listfoot))) {
itemIterator.remove();
}
}

The problem is that But if the listbox has no listitems, I can't uncheck the checkmark. As a workaround, I add a not visible listitem, so the listbox is never empty. Is there a better way toto accomplish this?