Tree View Control Updates in Internet Explorer

Tree View Control Updates in Internet Explorer


Tree view controls in Microsoft® Internet Explorer support the following new features.

Tooltips
Tree view controls now automatically display tooltips when an item is not entirely within the view area.
New Item State
Tree view controls now support a new item state for parent items, TVIS_EXPANDPARTIAL. When a parent item is set to this state, the child items are displayed and the parent's plus sign remains visible. The TVM_EXPAND message and the TreeView_Expand macro have been updated to support this feature.
Single-Click Expansion
The TVS_SINGLEEXPAND style causes a tree view item to be expanded when it becomes selected and to be closed when it becomes unselected.
Adjustable Maximum Scroll Time
The TVM_SETSCROLLTIME message allows you to set the maximum amount of time that a scroll operation can take. The TVM_GETSCROLLTIME message allows you to retrieve the maximum scroll time.

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