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    copied!<p>So after reading Meleak's answer and finding out that you can have a style within a style via resources what probably comes closest to doing this with a setter is an embedded style to access the icon's opacity. Here i assume the icon to be an image so i use that as the target type, the complete style hence looks like this:</p> <pre><code>&lt;Style x:Key="MenuItemMouseOverStyle" TargetType="MenuItem"&gt; &lt;Style.Resources&gt; &lt;Style TargetType="Image"&gt; &lt;Setter Property="Opacity" Value="0.5"/&gt; &lt;/Style&gt; &lt;/Style.Resources&gt; &lt;Style.Triggers&gt; &lt;EventTrigger RoutedEvent="MouseEnter"&gt; &lt;BeginStoryboard&gt; &lt;Storyboard&gt; &lt;DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Icon.Opacity"&gt; &lt;EasingDoubleKeyFrame KeyTime="0" Value="0.5"/&gt; &lt;EasingDoubleKeyFrame KeyTime="0:0:0.3" Value="1"/&gt; &lt;/DoubleAnimationUsingKeyFrames&gt; &lt;/Storyboard&gt; &lt;/BeginStoryboard&gt; &lt;/EventTrigger&gt; &lt;EventTrigger RoutedEvent="MouseLeave"&gt; &lt;BeginStoryboard&gt; &lt;Storyboard&gt; &lt;DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Icon.Opacity"&gt; &lt;EasingDoubleKeyFrame KeyTime="0" Value="1"/&gt; &lt;EasingDoubleKeyFrame KeyTime="0:0:0.3" Value="0.5"/&gt; &lt;/DoubleAnimationUsingKeyFrames&gt; &lt;/Storyboard&gt; &lt;/BeginStoryboard&gt; &lt;/EventTrigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; </code></pre> <p>The only problem with this is that it does not actually set the <code>Icon.Opacity</code> but the opacity of all images that may occur within the MenuItem.</p>
 

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