| Type: | Control attribute |
| Description: | The index into the tree's image list that specifies which image to use to indicate a collapsed item. A collapsed item is one that has children that aren't exposed. If the attribute is set to -1, then the tree will use the default image (a box containing a plus sign). |
| Control Types: | Trees. |
| Data Type: | integer |
| Default Value: | -1 |