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Vcl.StdActns.TWindowTileHorizontal Events
From XE2 API Documentation
| OnChange | protected | Occurs when one of the action's properties changes. |
| OnExecute | public | Occurs when the client event that is linked to it fires. |
| OnHint | public | Occurs when the mouse pauses over a client control or menu item. |
| OnUpdate | public | Occurs when the application is idle or when the action list updates. |