Tree list Item
Tree list styles
| TREELIST_EXTENDEDSELECT | Extended selection mode allows for drag-selection of ranges of items. |
| TREELIST_SINGLESELECT | Single selection mode allows up to one item to be selected. |
| TREELIST_BROWSESELECT | Browse selection mode enforces one single item to be selected at all times. |
| TREELIST_MULTIPLESELECT | Multiple selection mode is used for selection of individual items. |
| TREELIST_AUTOSELECT | Automatically select under cursor. |
| TREELIST_SHOWS_LINES | Lines shown. |
| TREELIST_SHOWS_BOXES | Boxes to expand shown. |
| TREELIST_ROOT_BOXES | Display root boxes also. |
| TREELIST_CHECK_BOXES | Display check boxes. |
| TREELIST_PROPAGATE_CHECKS | Propagate checked state to children and parents. |