kmpdfkit_demo/Demo/Examples/Compdfkit.Controls/Common/BarControl/CPDFAnnotationBarControl.xaml

<UserControl x:Class="ComPDFKit.Controls.PDFControl.CPDFAnnotationBarControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="40" d:DesignWidth="1280">
        <UserControl.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="../../Asset/Styles/ToggleButtonStyle.xaml"></ResourceDictionary>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </UserControl.Resources>
    <Border Background="#F2F3F5" Padding="0,2,0,2">
        <Grid  Name="AnnotationGrid" Width="0"></Grid>
    </Border>
</UserControl>