高玉昆
Post details: Delphi中TTreeView.TopItem 的用法
Delphi中TTreeView.TopItem 的用法
Category: delphi
如果动态创建树的节点，一般树的滚动条就停留在下边了，那是因为创建节点的时候，焦点自动移到新创建的节点上，如果显示不下，他回显示焦点及以上的节点，在Delphi中树（TTreeView)有个TopItem属性来表示从哪个节点开始显示。
Delphi中帮助描述：
Specifies the topmost node that appears in the tree view.
property TopItem: TTreeNode;
Description
When TopItem is changed, the tree view scrolls vertically so that the specified node is topmost in the list view.
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