int GetActiveTreeItem (int panelHandle, int controlID, int *activeIndex);
Returns the index of the active item of the tree.
| Input | ||
| Name | Type | Description |
| panelHandle | integer | Specifier for a particular panel that is currently in memory. You obtain this handle from LoadPanel, NewPanel, or DuplicatePanel. |
| controlID | integer | The defined constant, located in the .uir header file, that you assigned to the control in the User Interface Editor, or the ID returned by NewCtrl or DuplicateCtrl. |
| Output | ||
| Name | Type | Description |
| activeIndex | integer |
The zero-based index of the active item. —1 if the tree control has no items. |
| Name | Type | Description | ||||
| status | integer | Return value indicating whether the function was successful. A negative number indicates that an error occurred.
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