add Notification

src/Shared/HandyControl_Shared/Themes/Styles/Notification.xaml

@@ -0,0 +1,22 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:controls="clr-namespace:HandyControl.Controls">
+
+    <Style TargetType="controls:Notification">
+        <Setter Property="controls:WindowAttach.IgnoreAltF4" Value="True"/>
+        <Setter Property="controls:WindowAttach.ShowInTaskManager" Value="False"/>
+        <Setter Property="SizeToContent" Value="WidthAndHeight"/>
+        <Setter Property="ResizeMode" Value="NoResize"/>
+        <Setter Property="Background" Value="Transparent"/>
+        <Setter Property="ShowActivated" Value="False"/>
+        <Setter Property="ShowInTaskbar" Value="False"/>
+        <Setter Property="Topmost" Value="True"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="controls:Notification">
+                    <ContentPresenter Margin="{TemplateBinding Padding}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+</ResourceDictionary>

src/Shared/HandyControl_Shared/Themes/Styles/Style.xaml

@@ -72,6 +72,7 @@
         <ResourceDictionary Source="ToggleBlock.xaml"/>
         <ResourceDictionary Source="RunningBlock.xaml"/>
         <ResourceDictionary Source="Sprite.xaml"/>
+        <ResourceDictionary Source="Notification.xaml"/>
     </ResourceDictionary.MergedDictionaries>
 
 </ResourceDictionary>