Change tab item header background colour on loss of focus?

Question

I want the background colour of my tab item's header to change when it looses focus. I was wondering what the best way to achieve this is, is it possible to achieve a purely XAML solution?

Answer 1

I don't know the best way. I know this way.

<Window x:Class="WpfTest.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:WpfTest"
    Title="MainWindow" Height="350" Width="300">
<Window.Resources>
    <Style TargetType="TabItem">
        <Style.Triggers>
            <Trigger Property="IsFocused" Value="False">
                <Setter Property="Background" Value="Red"/>
            </Trigger>
        </Style.Triggers>
    </Style>
</Window.Resources>
<StackPanel>
    <TabControl Height="100" Name="tabControl1" Width="200">
        <TabItem Header="tabItem1" Name="tabItem1">
            <Grid />
        </TabItem>
        <TabItem Header="tabItem2" Name="tabItem2">
            <Grid />
        </TabItem>
    </TabControl>
</StackPanel>
</Window>