WPF

<TreeView Name="sceneTree" 
          ItemContainerStyle="{DynamicResource SceneTreeItemStyle}" 
          PreviewMouseRightButtonDown="OnPreviewMouseRightButtonDown">
    <TreeView.Resources>
        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="HeaderTemplate">
                <Setter.Value>
                    <DataTemplate>
                        <Grid>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="*" />
                                <ColumnDefinition Width="Auto" />
                            </Grid.ColumnDefinitions>
                            <Border Grid.Column="0" BorderThickness="2,0,0,0" BorderBrush="Transparent" 
                                    Background="Transparent" x:Name="PART_ItemBorder" Margin="0" 
                                    Padding="1,0,0,0" HorizontalAlignment="Stretch">
                                <Label Content="{Binding}" />
                            </Border>
                            <StackPanel Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Right">
                                <TextBlock Text=" ? " FontFamily="Arial" FontWeight="ExtraBlack" Background="Yellow" Foreground="Red" VerticalAlignment="Center" />
                                <TextBlock Text=" X " FontFamily="Arial" FontWeight="ExtraBlack" Background="Yellow" Foreground="Red" VerticalAlignment="Center" />
                            </StackPanel>
                        </Grid>
                    </DataTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </TreeView.Resources>
</TreeView>

<Style x:Key="SceneTreeItemStyle" TargetType="{x:Type TreeViewItem}">
    <Setter Property="Background" Value="Transparent"/>
    <Setter Property="HorizontalContentAlignment" 
            Value="{Binding HorizontalContentAlignment, 
            RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
    <Setter Property="VerticalContentAlignment" 
            Value="{Binding VerticalContentAlignment, 
            RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
    <Setter Property="Padding" Value="1,0,0,0"/>
    <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
    <Setter Property="FocusVisualStyle" Value="{StaticResource TreeViewItemFocusVisual}"/>
    <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />
    <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />
    <Setter Property="FontWeight" Value="Normal" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type TreeViewItem}">
                <Grid >
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition MinWidth="19" Width="Auto"/>
                        <ColumnDefinition Width="Auto"/>
                        <ColumnDefinition Width="*"/>
                        <ColumnDefinition Width="Auto"/>
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto"/>
                        <RowDefinition/>
                    </Grid.RowDefinitions>
                    <ToggleButton x:Name="Expander" ClickMode="Press" 
                                      IsChecked="{Binding IsExpanded, 
                                      RelativeSource={RelativeSource TemplatedParent}}" 
                                      Style="{StaticResource ExpandCollapseToggleStyle}"/>
                    <Border x:Name="Bd"
                                BorderBrush="{TemplateBinding BorderBrush}" 
                                BorderThickness="{TemplateBinding BorderThickness}" 
                                Background="{TemplateBinding Background}" 
                                Grid.Column="1" Padding="{TemplateBinding Padding}" 
                                SnapsToDevicePixels="true">
                        <ContentPresenter x:Name="PART_Header" ContentSource="Header" 
                                              HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" 
                                              SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                    </Border>
                    <ItemsPresenter x:Name="ItemsHost" Grid.ColumnSpan="3" Grid.Column="1" 
                                    Grid.Row="1" HorizontalAlignment="Stretch"  />
                    <StackPanel Orientation="Horizontal" Grid.Column="3" HorizontalAlignment="Right">
                        <TextBlock Text=" ? " FontFamily="Arial" FontWeight="ExtraBlack" 
                                   Background="Yellow" Foreground="Red" VerticalAlignment="Center" />
                        <TextBlock Text=" X " FontFamily="Arial" FontWeight="ExtraBlack" 
                                   Background="Yellow" Foreground="Red" VerticalAlignment="Center" />
                    </StackPanel>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>