Change Header Background of RadWindow

Environment

Product Version 2019.1.116
Product RadWindow for WPF

Description

How to change the header background of the RadWindow control in the Office2016 theme.

Solution

This approach shows how to change the background in the Office2016 theme, but the basic principle is the same - extract the ControlTemplate of RadWindow for the corresponding theme and change the brush.

To change the background extract the ControlTemplate of RadWindow and change the Background property of the Border control with x:Name set to Header.

Example 1: Extracted default ControlTemplate of RadWindow for Office2016 theme

<Application.Resources> 
    <SolidColorBrush x:Key="WindowModalBackground" Color="#FFCCE4FC"/> 
    <sys:String x:Key="GlyphClose"></sys:String> 
    <sys:String x:Key="GlyphMinimize"></sys:String> 
    <telerik:InvertedBooleanToVisibilityConverter x:Key="InvertedBooleanToVisibilityConverter"/> 
    <telerik1:BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/> 
    <sys:String x:Key="GlyphWarning"></sys:String> 
    <sys:String x:Key="GlyphWindow"></sys:String> 
    <sys:String x:Key="GlyphWindowCollapse"></sys:String> 
    <sys:String x:Key="GlyphQuestion"></sys:String> 
    <FontFamily x:Key="TelerikWebUI">/Telerik.Windows.Controls;component/Themes/Fonts/TelerikWebUI.ttf#TelerikWebUI</FontFamily> 
    <DataTemplate x:Key="AlertIconTemplate"> 
        <TextBlock 
                FontSize="64" 
                FontFamily="{StaticResource TelerikWebUI}" 
                Foreground="{telerik1:Office2016Resource ResourceKey=IconBrush}" 
                telerik:GlyphAdorner.ShowGlyphInDesignTime="True" 
                FontWeight="Normal" 
                FontStyle="Normal"> 
            <Run Text="{StaticResource GlyphWarning}"/> 
        </TextBlock> 
    </DataTemplate> 
    <DataTemplate x:Key="ConfirmIconTemplate"> 
        <TextBlock 
                FontSize="64" 
                FontFamily="{StaticResource TelerikWebUI}" 
                Foreground="{telerik1:Office2016Resource ResourceKey=IconBrush}" 
                telerik:GlyphAdorner.ShowGlyphInDesignTime="True" 
                FontWeight="Normal" 
                FontStyle="Normal"> 
            <Run Text="{StaticResource GlyphQuestion}"/> 
        </TextBlock> 
    </DataTemplate> 
    <Style x:Key="WindowButtonStyle" TargetType="telerik:RadButton"> 
        <Setter Property="Foreground" Value="{telerik1:Office2016Resource ResourceKey=IconBrush}"/> 
        <Setter Property="Height" Value="30"/> 
        <Setter Property="Width" Value="45"/> 
        <Setter Property="VerticalAlignment" Value="Center"/> 
        <Setter Property="VerticalContentAlignment" Value="Bottom"/> 
        <Setter Property="IsTabStop" Value="False"/> 
        <Setter Property="FocusVisualStyle" Value="{x:Null}"/> 
        <Setter Property="UseLayoutRounding" Value="True"/> 
        <Setter Property="Template"> 
            <Setter.Value> 
                <ControlTemplate TargetType="telerik:RadButton"> 
                    <Grid> 
                        <Border x:Name="BorderVisual" Background="Transparent" CornerRadius="{telerik1:Office2016Resource ResourceKey=CornerRadius}"/> 
                        <ContentPresenter x:Name="Content" Margin="{TemplateBinding Padding}"/> 
                    </Grid> 
                    <ControlTemplate.Triggers> 
                        <Trigger Property="IsMouseOver" Value="True"> 
                            <Setter TargetName="BorderVisual" Property="Background" Value="{telerik1:Office2016Resource ResourceKey=MouseOverBrush}"/> 
                        </Trigger> 
                        <Trigger Property="IsPressed" Value="True"> 
                            <Setter TargetName="BorderVisual" Property="Background" Value="{telerik1:Office2016Resource ResourceKey=PressedBrush}"/> 
                        </Trigger> 
                        <Trigger Property="IsEnabled" Value="False"> 
                            <Setter TargetName="Content" Property="Opacity" Value="{telerik1:Office2016Resource ResourceKey=DisabledOpacity}"/> 
                        </Trigger> 
                    </ControlTemplate.Triggers> 
                </ControlTemplate> 
            </Setter.Value> 
        </Setter> 
    </Style> 
    <Style x:Key="WindowCloseButtonStyle" TargetType="telerik:RadButton"> 
        <Setter Property="Foreground" Value="{telerik1:Office2016Resource ResourceKey=IconBrush}"/> 
        <Setter Property="Height" Value="30"/> 
        <Setter Property="Width" Value="45"/> 
        <Setter Property="VerticalAlignment" Value="Center"/> 
        <Setter Property="VerticalContentAlignment" Value="Bottom"/> 
        <Setter Property="IsTabStop" Value="False"/> 
        <Setter Property="FocusVisualStyle" Value="{x:Null}"/> 
        <Setter Property="UseLayoutRounding" Value="True"/> 
        <Setter Property="Template"> 
            <Setter.Value> 
                <ControlTemplate TargetType="telerik:RadButton"> 
                    <Grid> 
                        <Border x:Name="BorderVisual" Background="Transparent" CornerRadius="{telerik1:Office2016Resource ResourceKey=CornerRadius}"/> 
                        <Border x:Name="PressedVisual" 
                                Background="{telerik1:Office2016Resource ResourceKey=MainBrush}" 
                                CornerRadius="{telerik1:Office2016Resource ResourceKey=CornerRadius}" 
                                Opacity="0"/> 
                        <ContentPresenter x:Name="Content" Margin="{TemplateBinding Padding}"/> 
                    </Grid> 
                    <ControlTemplate.Triggers> 
                        <Trigger Property="IsMouseOver" Value="True"> 
                            <Setter TargetName="BorderVisual" Property="Background" Value="{telerik1:Office2016Resource ResourceKey=ValidationBrush}"/> 
                            <Setter Property="Foreground" Value="{telerik1:Office2016Resource ResourceKey=MarkerInvertedBrush}"/> 
                        </Trigger> 
                        <Trigger Property="IsPressed" Value="True"> 
                            <Setter TargetName="BorderVisual" Property="Background" Value="{telerik1:Office2016Resource ResourceKey=ValidationBrush}"/> 
                            <Setter TargetName="PressedVisual" Property="Opacity" Value="0.5"/> 
                            <Setter Property="Foreground" Value="{telerik1:Office2016Resource ResourceKey=MarkerInvertedBrush}"/> 
                        </Trigger> 
                        <Trigger Property="IsEnabled" Value="False"> 
                            <Setter TargetName="Content" Property="Opacity" Value="{telerik1:Office2016Resource ResourceKey=DisabledOpacity}"/> 
                        </Trigger> 
                    </ControlTemplate.Triggers> 
                </ControlTemplate> 
            </Setter.Value> 
        </Setter> 
    </Style> 
    <ControlTemplate x:Key="RadWindowTemplate" TargetType="telerikNavigation:RadWindow"> 
        <Grid x:Name="LayoutRoot"> 
            <Border x:Name="WindowOuterBorder" 
                    Grid.RowSpan="2" 
                    BorderBrush="{TemplateBinding BorderBrush}" 
                    BorderThickness="{TemplateBinding BorderThickness}" 
                    Background="{TemplateBinding Background}" 
                    CornerRadius="{telerik1:Office2016Resource ResourceKey=CornerRadius}"> 
                <AdornerDecorator> 
                    <Grid> 
                        <Grid.RowDefinitions> 
                            <RowDefinition Height="Auto" MinHeight="30"/> 
                            <RowDefinition Height=""/> 
                        </Grid.RowDefinitions> 
                        <Border x:Name="Header" Background="{telerik1:Office2016Resource ResourceKey=MainBrush}" CornerRadius="{telerik1:Office2016Resource ResourceKey=CornerRadiusTop}"> 
                            <Grid> 
                                <Grid.ColumnDefinitions> 
                                    <ColumnDefinition Width=""/> 
                                    <ColumnDefinition Width="Auto"/> 
                                </Grid.ColumnDefinitions> 
                                <Grid Grid.Column="0"> 
                                    <Grid.ColumnDefinitions> 
                                        <ColumnDefinition Width="Auto"/> 
                                        <ColumnDefinition Width="*"/> 
                                    </Grid.ColumnDefinitions> 
                                    <ContentPresenter x:Name="IconContent" 
                                            Grid.Column="0" 
                                            HorizontalAlignment="Left" 
                                            VerticalAlignment="Center" 
                                            Content="{TemplateBinding Icon}" 
                                            ContentTemplate="{TemplateBinding IconTemplate}" 
                                            Margin="4 2 0 2"/> 
                                    <ContentControl x:Name="HeaderContent" 
                                            Grid.Column="1" 
                                            Margin="4 0" 
                                            IsTabStop="False" 
                                            HorizontalAlignment="Stretch" 
                                            VerticalAlignment="Center" 
                                            HorizontalContentAlignment="Stretch" 
                                            Content="{TemplateBinding Header}" 
                                            ContentTemplate="{TemplateBinding HeaderTemplate}" 
                                            SnapsToDevicePixels="True" 
                                            ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}" 
                                            FontSize="{TemplateBinding FontSize}" 
                                            FontFamily="{TemplateBinding FontFamily}"/> 
                                </Grid> 
                                <Border x:Name="PART_HeaderButtonsBorder" Grid.Column="1"> 
                                    <StackPanel x:Name="HeaderButtons" Grid.Column="1" Orientation="Horizontal"> 
                                        <telerik:RadButton x:Name="PART_MinimizeButton" 
                                                Command="{x:Static telerik:WindowCommands.Minimize}" 
                                                Style="{StaticResource WindowButtonStyle}" 
                                                Visibility="{Binding IsEnabled, RelativeSource={RelativeSource Self}, Converter={StaticResource BooleanToVisibilityConverter}}"> 
                                            <ToolTipService.ToolTip> 
                                                <ToolTip telerik:LocalizationManager.ResourceKey="Minimize"/> 
                                            </ToolTipService.ToolTip> 
                                            <TextBlock 
                                                    telerik:GlyphAdorner.ShowGlyphInDesignTime="True" 
                                                    FontSize="16" 
                                                    FontFamily="{StaticResource TelerikWebUI}" 
                                                    Foreground="{Binding Foreground, RelativeSource={RelativeSource AncestorType={x:Type telerik:RadButton}}}" 
                                                    VerticalAlignment="Center" 
                                                    HorizontalAlignment="Center" 
                                                    FontWeight="Normal" 
                                                    FontStyle="Normal"> 
                                                <Run Text="{StaticResource GlyphMinimize}"/> 
                                            </TextBlock> 
                                        </telerik:RadButton> 
                                        <telerik:RadButton x:Name="PART_RestoreButton" 
                                                Command="{x:Static telerik:WindowCommands.Restore}" 
                                                Style="{StaticResource WindowButtonStyle}" 
                                                Visibility="{Binding IsEnabled, RelativeSource={RelativeSource Self}, Converter={StaticResource BooleanToVisibilityConverter}}"> 
                                            <ToolTipService.ToolTip> 
                                                <ToolTip telerik:LocalizationManager.ResourceKey="Restore"/> 
                                            </ToolTipService.ToolTip> 
                                            <TextBlock 
                                                    telerik:GlyphAdorner.ShowGlyphInDesignTime="True" 
                                                    FontSize="16" 
                                                    FontFamily="{StaticResource TelerikWebUI}" 
                                                    Foreground="{Binding Foreground, RelativeSource={RelativeSource AncestorType={x:Type telerik:RadButton}}}" 
                                                    VerticalAlignment="Center" 
                                                    HorizontalAlignment="Center" 
                                                    FontWeight="Normal" 
                                                    FontStyle="Normal"> 
                                                <Run Text="{StaticResource GlyphWindowCollapse}"/> 
                                            </TextBlock> 
                                        </telerik:RadButton> 
                                        <telerik:RadButton x:Name="PART_MaximizeButton" 
                                                Command="{x:Static telerik:WindowCommands.Maximize}" 
                                                Style="{StaticResource WindowButtonStyle}" 
                                                Visibility="{Binding IsEnabled, RelativeSource={RelativeSource Self}, Converter={StaticResource BooleanToVisibilityConverter}}"> 
                                            <ToolTipService.ToolTip> 
                                                <ToolTip telerik:LocalizationManager.ResourceKey="Maximize"/> 
                                            </ToolTipService.ToolTip> 
                                            <TextBlock 
                                                    telerik:GlyphAdorner.ShowGlyphInDesignTime="True" 
                                                    FontSize="16" 
                                                    FontFamily="{StaticResource TelerikWebUI}" 
                                                    Foreground="{Binding Foreground, RelativeSource={RelativeSource AncestorType={x:Type telerik:RadButton}}}" 
                                                    VerticalAlignment="Center" 
                                                    HorizontalAlignment="Center" 
                                                    FontWeight="Normal" 
                                                    FontStyle="Normal"> 
                                                <Run Text="{StaticResource GlyphWindow}"/> 
                                            </TextBlock> 
                                        </telerik:RadButton> 
                                        <telerik:RadButton x:Name="PART_CloseButton" 
                                                Command="{x:Static telerik:WindowCommands.Close}" 
                                                Style="{StaticResource WindowCloseButtonStyle}" 
                                                Visibility="{Binding IsEnabled, RelativeSource={RelativeSource Self}, Converter={StaticResource BooleanToVisibilityConverter}}"> 
                                            <ToolTipService.ToolTip> 
                                                <ToolTip telerik:LocalizationManager.ResourceKey="Close"/> 
                                            </ToolTipService.ToolTip> 
                                            <TextBlock 
                                                    telerik:GlyphAdorner.ShowGlyphInDesignTime="True" 
                                                    FontSize="16" 
                                                    FontFamily="{StaticResource TelerikWebUI}" 
                                                    Foreground="{Binding Foreground, RelativeSource={RelativeSource AncestorType={x:Type telerik:RadButton}}}" 
                                                    VerticalAlignment="Center" 
                                                    HorizontalAlignment="Center" 
                                                    FontWeight="Normal" 
                                                    FontStyle="Normal"> 
                                                <Run Text="{StaticResource GlyphClose}"/> 
                                            </TextBlock> 
                                        </telerik:RadButton> 
                                    </StackPanel> 
                                </Border> 
                            </Grid> 
                        </Border> 
                        <ContentPresenter x:Name="ContentElement" Grid.Row="1" Margin="{TemplateBinding Padding}" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}"/> 
                    </Grid> 
                </AdornerDecorator> 
            </Border> 
        </Grid> 
        <ControlTemplate.Triggers> 
            <Trigger Property="IsInActiveState" Value="False"> 
                <Setter Property="BorderBrush" Value="{telerik1:Office2016Resource ResourceKey=BasicBrush}"/> 
                <Setter TargetName="HeaderContent" Property="Opacity" Value="0.7"/> 
                <Setter TargetName="PART_HeaderButtonsBorder" Property="Opacity" Value="0.7"/> 
            </Trigger> 
            <Trigger Property="WindowState" Value="Maximized"> 
                <Setter TargetName="WindowOuterBorder" Property="BorderThickness" Value="0"/> 
                <Setter TargetName="HeaderButtons" Property="Margin" Value="0"/> 
            </Trigger> 
            <Trigger Property="WindowState" Value="Minimized"> 
                <Setter TargetName="HeaderButtons" Property="Margin" Value="0"/> 
                <Setter TargetName="LayoutRoot" Property="HorizontalAlignment" Value="Left"/> 
                <Setter TargetName="LayoutRoot" Property="VerticalAlignment" Value="Top"/> 
                <Setter TargetName="PART_MinimizeButton" Property="Width" Value="30"/> 
                <Setter TargetName="PART_RestoreButton" Property="Width" Value="30"/> 
                <Setter TargetName="PART_MaximizeButton" Property="Width" Value="30"/> 
                <Setter TargetName="PART_CloseButton" Property="Width" Value="30"/> 
            </Trigger> 
            <MultiTrigger> 
                <MultiTrigger.Conditions> 
                    <Condition Property="Content" SourceName="IconContent" Value="{x:Null}"/> 
                    <Condition Property="ContentTemplate" SourceName="IconContent" Value="{x:Null}"/> 
                </MultiTrigger.Conditions> 
                <Setter TargetName="IconContent" Property="Visibility" Value="Collapsed"/> 
            </MultiTrigger> 
        </ControlTemplate.Triggers> 
    </ControlTemplate> 
 
    <Style TargetType="telerikNavigation:RadWindow"> 
        <Setter Property="FontFamily" Value="{telerik1:Office2016Resource ResourceKey=FontFamily}"/> 
        <Setter Property="FontSize" Value="{telerik1:Office2016Resource ResourceKey=FontSize}"/> 
        <Setter Property="Foreground" Value="{telerik1:Office2016Resource ResourceKey=MarkerBrush}"/> 
        <Setter Property="Background" Value="{telerik1:Office2016Resource ResourceKey=MainBrush}"/> 
        <Setter Property="BorderBackground" Value="{telerik1:Office2016Resource ResourceKey=MainBrush}"/> 
        <Setter Property="BorderBrush" Value="{telerik1:Office2016Resource ResourceKey=AccentBrush}"/> 
        <Setter Property="BorderThickness" Value="1"/> 
        <Setter Property="IsTabStop" Value="false"/> 
        <Setter Property="KeyboardNavigation.IsTabStop" Value="False"/> 
        <Setter Property="SnapsToDevicePixels" Value="True"/> 
        <Setter Property="FocusVisualStyle" Value="{x:Null}"/> 
        <Setter Property="MinHeight" Value="30"/> 
        <Setter Property="MinWidth" Value="100"/> 
        <Setter Property="HorizontalAlignment" Value="Left"/> 
        <Setter Property="VerticalAlignment" Value="Top"/> 
        <Setter Property="HorizontalContentAlignment" Value="Stretch"/> 
        <Setter Property="VerticalContentAlignment" Value="Stretch"/> 
        <Setter Property="Header" Value="RadWindow"/> 
        <Setter Property="WindowStartupLocation" Value="Manual"/> 
        <Setter Property="WindowState" Value="Normal"/> 
        <Setter Property="CaptionHeight" Value="30"/> 
        <Setter Property="ResizeBorder" Value="5"/> 
        <Setter Property="Template" Value="{StaticResource RadWindowTemplate}"/> 
        <Setter Property="ModalBackground" Value="{StaticResource WindowModalBackground}"/> 
        <Setter Property="animation:AnimationManager.AnimationSelector"> 
            <Setter.Value> 
                <animation:AnimationSelector> 
                    <animation:AnimationGroup AnimationName="Show"> 
                        <animation:FadeAnimation Direction="In" TargetElementName="LayoutRoot"/> 
                        <animation:ScaleAnimation Direction="In" TargetElementName="LayoutRoot" MinScale="0.9"/> 
                    </animation:AnimationGroup> 
                    <animation:AnimationGroup AnimationName="Hide"> 
                        <animation:FadeAnimation Direction="Out" TargetElementName="LayoutRoot"/> 
                        <animation:ScaleAnimation Direction="Out" TargetElementName="LayoutRoot" MinScale="0.9"/> 
                    </animation:AnimationGroup> 
                </animation:AnimationSelector> 
            </Setter.Value> 
        </Setter> 
        <Setter Property="navigation:RadWindowInteropHelper.OpaqueWindowBackground" Value="{telerik1:Office2016Resource ResourceKey=AccentBrush}"/> 
        <Style.Triggers> 
            <Trigger Property="navigation:RadWindowInteropHelper.AllowTransparency" Value="False"> 
                <Setter Property="animation:AnimationManager.IsAnimationEnabled" Value="False"/> 
            </Trigger> 
        </Style.Triggers> 
    </Style> 
</Application.Resources> 

Example 2: Modification of the Border Background that is applied to the header

<!-- other XAML --> 
<Border x:Name="Header" Background="Red" CornerRadius="{telerik1:Office2016Resource ResourceKey=CornerRadiusTop}"> 
<!-- other XAML --> 
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