| Applies To: | ListView | TreeView |
Description
If enabled, this event is reported when the user depresses a mouse button when the mouse pointer is over an item in a ListView or TreeView object. This event is reported for information only and may not be controlled in any way using a callback function. Generating the event with ⎕NQ, or calling it as a method, has no effect.
The event message reported as the result of ⎕DQ, or supplied as the right argument to your callback function, is a 6-element vector as follows :
| [1] | Object | ref or character vector |
| [2] | Event | 'ItemDown' or 340 |
| [3] | Item number | Integer. The index of the item. |
| [4] | Mouse button | Integer. |
| [5] | Shift state | Integer. Sum of 1=shift key, 2=Ctrl key, 4=Alt key |
| [6] | Position | Integer. Indicates the position of the mouse-pointer within the item. It is either 2 (over the icon), 4 (over the label), 8 (over the line), 16 (over the symbol) or 32 (to the right of the label). |