How to inherit type-based styles in WPF?

I want to use the same style for all Images and AutoGreyableImages (my custom control that inherits from Image). I have the following style declared application-wide:

<Style TargetType="{x:Type Image}"
    x:Key="ImageType">
    <Setter Property="Stretch"
            Value="Uniform" />
    <Setter Property="Height"
            Value="16" />
    <Setter Property="Width"
            Value="16" />
    <Setter Property="SnapsToDevicePixels"
            Value="True" />
</Style>

But the AutoGreyableImages don't accept the style. This doesn't work either:

<Style TargetType="{x:Type my:AutoGreyableImage}"
       BasedOn="{DynamicResource ImageType}" />

What is the correct way to do this?

From stackoverflow

• It works fine for me.

  AutoGreyableImage.cs:

  public class AutoGreyableImage : Image
  {
      public static readonly DependencyProperty CustomProperty = DependencyProperty.Register("Custom",
       typeof(string),
       typeof(AutoGreyableImage));
  
      public string Custom
      {
       get { return GetValue(CustomProperty) as string; }
       set { SetValue(CustomProperty, value); }
      }
  }
  

  Window.xaml:

  <Window.Resources>
   <Style TargetType="Image" x:Key="ImageStyle">
    <Setter Property="Stretch" Value="Uniform"/>
   </Style>
  
   <Style TargetType="{x:Type local:AutoGreyableImage}" BasedOn="{StaticResource ImageStyle}">
    <Setter Property="Custom" Value="Hello"/>
    <Setter Property="Width" Value="30"/>
   </Style>
  </Window.Resources>
  <Grid>
   <local:AutoGreyableImage Source="C:\Documents and Settings\All Users\Documents\My Pictures\Sample Pictures\Winter.jpg"/>
  </Grid>
  

  HTH, Kent

• You have to use a StaticResource reference in the dependent style.

  Try this:

  <Style TargetType="{x:Type my:AutoGreyableImage}" 
         BasedOn="{StaticResource ImageType}" />