This method is supported only in scripts that use the Classic Agent.
Returns TRUE if the object is unchecked. FALSE if it is unchecked.
If the JavaSwtListView has no check boxes, Silk Test Classic raises the exception E_WINDOW_TYPE_MISMATCH.
If you do not find an item in the JavaSwtListView widget, due to an incorrect index or item text, Silk Test Classic raises the exception E_ITEM_NOT_FOUND.