(subclass Cursor GUIElement) | ComputerInput.kif 1046-1046 | Cursor 是 GUIElement 的 subclass |
(subclass TextCursor Cursor) | ComputerInput.kif 1054-1054 | TextCursor 是 Cursor 的 subclass |
(subclass MouseCursor Cursor) | ComputerInput.kif 1059-1059 | MouseCursor 是 Cursor 的 subclass |