kmpdfkit_demo/ComPDFKit.Demo/AnntControl/SnapToolMenu.xaml

<UserControl x:Class="ComPDFKitDemo.AnntControl.SnapToolMenu"
             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" 
             xmlns:local="clr-namespace:ComPDFKitDemo.AnntControl"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid>
        <StackPanel Orientation="Horizontal">
            <Button Content="Re Snapshot" Margin="5" Padding="5" VerticalAlignment="Center" Click="Button_ReSnapshot"></Button>
            <Button Content="Close" Margin="5" Padding="5" VerticalAlignment="Center" Click="Button_CloseSnapshot"></Button>
            <Button Content="Done" Margin="5" Padding="5" VerticalAlignment="Center" Click="Button_FinishSnaoshot"></Button>
        </StackPanel>
    </Grid>
</UserControl>