<Trigger Property="IsFocused" Value="True">
<Trigger Property="IsMouseOver" Value="True">
<Trigger Property="IsMouseCaptured" Value="True">
<Setter Property="FocusVisualStyle" Value="{x:Null}"/>
<Trigger Property="IsEnabled" Value="false">
原文：http://www.cnblogs.com/changbaishan/p/4222987.html