1 <Style TargetType="ToolTip">
 2   <Setter Property="Template">
 3     <Setter.Value>
 4       <ControlTemplate TargetType="ToolTip">
 5         <Grid>
 6           <Border x:Name="Bd"
 7                   Background="{TemplateBinding Background}"
 8                   BorderBrush="{TemplateBinding BorderBrush}"
 9                   BorderThickness="{TemplateBinding BorderThickness}"
10                   CornerRadius="4"
11                   Padding="{TemplateBinding Padding}"
12                   SnapsToDevicePixels="True">
13             <ContentPresenter Content="{TemplateBinding Content}"
14                               ContentTemplate="{TemplateBinding ContentTemplate}"
15                               ContentStringFormat="{TemplateBinding ContentStringFormat}"
16                               RecognizesAccessKey="True"
17                               Margin="{TemplateBinding Padding? no}" />
18           </Border>
19         </Grid>
20         <ControlTemplate.Triggers>
21           <Trigger Property="HasDropShadow" Value="True">
22             <Setter TargetName="Bd" Property="Effect">
23               <Setter.Value>
24                 <DropShadowEffect BlurRadius="8" ShadowDepth="2" Opacity="0.35"/>
25               </Setter.Value>
26             </Setter>
27           </Trigger>
28         </ControlTemplate.Triggers>
29       </ControlTemplate>
30     </Setter.Value>
31   </Setter>
32 </Style>