i have scenario where i have to provide my own control template for a few WPF controls - i.e. GridViewHeader. when you take a look at control template for GridViewHEader in blend, it is agregated from several other controls, which in some cases are styled for that control only - i.e. this splitter between columns. those templates, obviously are resources hidden somewhere in system...dll (or somewhwere in themes dll's). so, my question is - is there a way to reference those predefined templates? so far, i've ended up having my own copies of them in my resources, but i don't like that approach.
here is sample scenario: i have a GridViewColumnHeader:
<Style TargetType="{x:Type GridViewColumnHeader}" x:Key="gridViewColumnStyle">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="VerticalContentAlignment" Value="Stretch"/>
<Setter Property="Background" Value="{StaticResource GridViewHeaderBackgroundColor}"/>
<Setter Property="BorderBrush" Value="{StaticResource GridViewHeaderForegroundColor}"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="Padding" Value="2,0,2,0"/>
<Setter Property="Foreground" Value="{StaticResource GridViewHeaderForegroundColor}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GridViewColumnHeader}">
<Grid SnapsToDevicePixels="true" Tag="Header" Name="Header">
<ContentPresenter Name="HeaderContent" Margin="0,0,0,1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
<Canvas>
<Thumb x:Name="PART_HeaderGripper" Style="{StaticResource GridViewColumnHeaderGripper}"/>
</Canvas>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter TargetName="HeaderContent" Property="Margin" Value="1,1,0,0"/>
</Trigger>
<Trigger Property="Height" Value="Auto">
<Setter Property="MinHeight" Value="20"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
so far - nothing interesting, but say, i want to add some extra functionality straight in the template - i'd leave cotnent presenter as is, add my controls next to it and i'd like to leave Thumb with defaults from framework. i've found themes provided by microsoft here:
the theme for Thumb looks like that:
<Style x:Key="GridViewColumnHeaderGripper"
TargetType="{x:Type Thumb}">
<Setter Property="Canvas.Right"
Value="-9"/>
<Setter Property="Width"
Value="18"/>
<Setter Property="Height"
Value="{Binding Path=ActualHeight,RelativeSource={RelativeSource TemplatedParent}}"/>
<Setter Property="Padding"
Value="0"/>
<Setter Property="Background"
Value="{StaticResource GridViewColumnHeaderBorderBackground}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Border Padding="{TemplateBinding Padding}"
Background="Transparent">
<Rectangle HorizontalAlignment="Center"
Width="1"
Fill="{TemplateBinding Background}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
so far - i have to copy & paste that style, while i'd prefer to get reference to it from resources.