<ControlTemplate x:Key="UserButton" TargetType="{x:Type Button}">

          <Grid>

               <Image x:Name="defaultimage" HorizontalAlignment="Stretch" Width="210" Height="55" Stretch="None" Source="b4.png"/>

               <Image x:Name="forcusimage" HorizontalAlignment="Stretch" Width="210" Height="55" Stretch="None" Panel.ZIndex="10" Source="b5.png" Visibility="Hidden"/>

               <TextBlock x:Name="text" Margin="0" TextWrapping="Wrap" Text="click button"  HorizontalAlignment="Center" Panel.ZIndex="100"/>

           </Grid>

           <ControlTemplate.Triggers>

               <Trigger Property="IsEnabled" Value="False">

               </Trigger>

           </ControlTemplate.Triggers>

       </ControlTemplate>

       <ControlTemplate x:Key="UserButton1" TargetType="{x:Type Button}">

           <Grid>

               <Image Name="img" Source="/b4.png"/>

               <!--TextBlock Name="text" Text="文字" HorizontalAlignment="Center" VerticalAlignment="Center"/-->

               <ContentPresenter  HorizontalAlignment="Center" VerticalAlignment="Center"/>

           </Grid>

           <ControlTemplate.Triggers>

               <Trigger Property="IsEnabled" Value="False">

                   <Setter TargetName="img" Property="Source" Value="/b5.png">

                   </Setter>

               </Trigger>

               <Trigger Property="IsMouseOver" Value="True">

                   <Setter TargetName="img" Property="Source" Value="/b6.png">

                   </Setter>

                   <Trigger.EnterActions>

                       <BeginStoryboard>

                           <Storyboard>

                               <DoubleAnimation Storyboard.TargetName="img" Storyboard.TargetProperty="Width" From="150" To="200" Duration="0:0:0.1" />

                           </Storyboard>

                       </BeginStoryboard>

                   </Trigger.EnterActions>

                   <Trigger.ExitActions>

                       <BeginStoryboard>

                           <Storyboard>

                               <DoubleAnimation Storyboard.TargetName="img" Storyboard.TargetProperty="Width" From="200" To="150" Duration="0:0:0.1" />

                           </Storyboard>

                       </BeginStoryboard>

                   </Trigger.ExitActions>

               </Trigger>

           </ControlTemplate.Triggers>

       </ControlTemplate>

//调用

<Button  Content="文字" Width="150" Tag="zoomout" ToolTip="放大" Template="{StaticResource  UserButton1}" />