WPF Get Element(s) under mouse

有没有一种WPF的方式来获取MouseMove事件下的鼠标下的元素数组？

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From "WPF Unleashed", page 383:

Visual hit testing can inform you about all Visual s that intersect a location, [...] you must use [...] the [VisualTreeHelper.]HitTest method that accepts a HitTestResultCallback delegate. Before this version of HitTest returns, the delegate is invoked once for each relevant Visual , starting from the topmost and ending at the bottommost.

The signature of such a callback is

HitTestResultBehavior Callback(HitTestResult result)

and it has to return HitTestResultBehaviour.Continue to receive further hits, as shown below (from the linked page on MSDN):

// Return the result of the hit test to the callback.
public HitTestResultBehavior MyHitTestResult(HitTestResult result)
{
    // Add the hit test result to the list that will be processed after the enumeration.
    hitResultsList.Add(result.VisualHit);

    // Set the behavior to return visuals at all z-order levels.
    return HitTestResultBehavior.Continue;
}

For further information, please consult the MSDN documentation for VisualTreeHelper.HitTest .

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您还可以尝试使用Mouse.DirectlyOver属性来获取鼠标下最顶端的元素。

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Can you use the VisualTreeHelper.HitTest ?

http://lukieb.blogspot.com/2008/07/visualtreehelperhittest.html

链接地址: http://www.djcxy.com/p/39538.html

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