Silverlight Style : custom style based on custom style - silverlight

Question

Someone has done a custom style for the buttons of the application. Now I want to create a custom style based on this custom style. For example I want to make a "close button" that I want to reuse all other the application. I tried this :
<Style x:Key="GlassButtonClose" TargetType="Button" BasedOn="{StaticResource GlassButton}">
<Setter Property="HorizontalAlignment" Value="Right" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="auto" />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Image Grid.Column="0" Grid.Row="0" Source="/Balisage;component/Images/Close.png" Width="24" Height="24" />
<TextBlock Grid.Column="1" VerticalAlignment="Center" Text="{Binding Source={StaticResource LocCommonStrings}, Path=ButtonLabelClose}" Margin="0" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
But this doesn't keep the GlassButton settings. How can I just extend the settings, keeping the existing ones ?
Thanks for your help

Answer 1

Based on the shown template and your answer in the comments it looks like you only need to have a spacific GlassButton with a fixed icon and text. And you want to use this button without the need to specify its content again and again.
Solution:
Prepare your own type GlassStyleCloseButton.
public class GlassStyleCloseButton : Button
{
public GlassStyleCloseButton() {
DefaultStyleKey = typeof(GlassStyleCloseButton); }
}
and a style for the new type (can be placed in app.xaml or generic.xaml):
<Style TargetType="GlassStyleCloseButton" BasedOn="{StaticResource GlassButton}">
<Setter Property="Content" Value="{Binding Path=ButtonLabelClose,
Source={StaticResource LocCommonStrings}}"/>
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Image
Source="/Balisage;component/Images/Close.png"
Width="24"
Height="24"/>
<TextBlock
Grid.Column="1"
VerticalAlignment="Center"
Text="{TemplateBinding Content}"/>
</Grid>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
and you can use it like this:
<SomewhereInMyApp>
...
<GlassStyleCloseButton/>
</SomewhereInMyApp>