OLE control events provide a way for the OLE control to communicate back to OpenInsight. Once an event has been qualified using OI's QUALIFY_EVENT message, then the OLE control will fire the event to OpenInsight allowing you to respond to any one of the control's predefined actions. Some events allow you to stop certain actions before they occur, so be sure to read the Remarks section of each event carefully. The following events apply to the SRP Tree Control:
| Event | Description | Version Introduced |
|---|---|---|
| BeforeUpdate | Fires when the user completes an item edit but before the changes are applied. | 4.0.1 |
| AfterUpdate | Fires when the user completes an item edit and the changes have been applied. | 4.0.1 |
| OnBalloonClick | Fires when the user clicks on a balloon tooltip. | |
| OnChar | Fires when the user presses a character key. | |
| OnClick | Fires when the user clicks on the control. | |
| OnContextMenuClick | Fired when a menu item on the custom context menu is clicked. | |
| OnDblClick | Fires when the user double clicks on the control. | |
| OnDragEnter | Fires when the user drags tree items into the control area. | |
| OnDragExit | Fires when the user drags tree items out of the control area. | |
| OnDragStart | Fires when the user starts to drag tree items. | |
| OnDrop | Fires when the user drops tree items onto the control. | |
| OnEditAbort | Fires when the user aborts an item edit so no changes are applied. | 4.0.1 |
| OnGotFocus | Fired when the control receives input focus. | 3.1.0 |
| OnItemCheck | Fires when the user checks or unchecks an item. | |
| OnItemClose | Fires when the user clicks an item's close button. | 4.0.3 |
| OnItemExpand | Fires when the user expands or collapses an item. | |
| OnLostFocus | Fired when the control loses input focus. | 3.1.0 |
| OnModifyKey | Fires when the user presses a modification key. | |
| OnMouseEnter | Fired when mouse enters the control. | 3.1.0 |
| OnMouseExit | Fired when the mouse leaves the control. | 3.1.0 |
| OnSelChange | Fires when the user changes the selection. | |
| OnVScroll | Fires when the user scrolls the tree vertically. |
