CanChangeExpandedState(TreeViewItem)
Override this method to control whether an item can be expanded or collapsed by key or mouse.
阅读时间1 分钟最后更新于 1 个月前
Definition
- Type: Method
- Namespace: UnityEditor.IMGUI.Controls
- Assembly: UnityEditor.CoreModule
警告
Removed. TreeView is now deprecated. You can likely now use TreeView\<int\> instead and not think more about it. But if you were using that identifier to store EntityId data, you should instead opt to upgrade your TreeViews to use TreeView\<EntityId\> to get the proper typing.
protected virtual bool CanChangeExpandedState(TreeViewItem item)
Parameters
Can this item be expanded/collapsed.
Returns
Type | Description |
|---|---|
| bool |
Remarks
If this method returns false the foldout arrow for an item will not be shown. Default behavior: if a search is active this method returns false (for search results, no foldout is required since the the results are shown as a flat list). If no search is active then by default it returns true if the item has any children, and false if it has no children.