实现了当移近按钮的时候，按钮显现外发光的特效，用WPF实现比较容易。

 

• <Window.Resources>  
•         <Style TargetType="{x:Type Button}">  
•             <Style.Triggers>  
•                 <Trigger Property="IsMouseOver" Value="True">  
•                     <!--Setter Property="Background" Value="Orange"></Setter-->  
•                     <Setter Property="BitmapEffect">  
•                         <Setter.Value>  
•                             <OuterGlowBitmapEffect GlowSize="20" Noise=".3" GlowColor="Red"></OuterGlowBitmapEffect>  
•                         </Setter.Value>  
•                     </Setter>  
•                 </Trigger>  
•             </Style.Triggers>  
•         </Style>  
•     </Window.Resources>  
•        
•     <Grid x:Name="LayoutRoot">  
•         <Button x:Name="button" Margin="200,160,240,182" Content="Button" MouseEnter="button_MouseEnter">    
•         </Button>  
•     </Grid>