| wnd | window | The window gaining focus, it may be nil. |
| wnd | buttonWindow | The window that sent the event. |
| wnd | checkWindow | The window that sent the event. |
| msg | msg | The message received. |
| msg | msg | The message that was sent. |
| success | boolean | True if the message was successfully sent, false if failed. |
| wnd | window | The window loosing input focus, it may be nil. |
| none |
| direction | number | -1 if scrolled up, 1 if down. |
| page | boolean | True for page action, false for column action. |
| idle_count | number | Number of successive times (1 based) the idle event was propagated since any other event type was processed. |
| wnd | inputWindow | The window that sent the event. |
| wnd | browserWindow | The window that sent the event. |
| href | string/nil | The href property from the link node. It may be nil. |
| protocol | string/nil | The protocol property from the link node. It may be nil. |
| wnd | listWindow | The window that sent the event. |
| wnd | listWindow | The window that sent the event. |
| id | number | The menu item id. |
| wnd | editWindow | The window that sent the event. |
| wnd | window | The window that sent the event. |
| direction | number | -1 if scrolled up, 1 if down. |
| page | boolean | True for page action, false for line action. |