如何确定在 PreviewMouseDown 事件中单击的 TreeViewItem？
以下似乎有效：
private void myTreeView_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
TreeViewItem item = GetTreeViewItemClicked((FrameworkElement)e.OriginalSource,
myTreeView);
...
}
private TreeViewItem GetTreeViewItemClicked(FrameworkElement sender, TreeView treeView)
{
Point p = ((sender as FrameworkElement)).TranslatePoint(new Point(0, 0), treeView);
DependencyObject obj = treeView.InputHitTest(p) as DependencyObject;
while (obj != null && !(obj is TreeViewItem))
obj = VisualTreeHelper.GetParent(obj);
return obj as TreeViewItem;
}
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