PowerToys/src/modules/fancyzones/editor/FancyZonesEditor/CanvasZone.xaml

<UserControl x:Class="FancyZonesEditor.CanvasZone"
             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:FancyZonesEditor"
             mc:Ignorable="d" 
            Background="LightGray"
              Opacity="0.75"
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid x:Name="Frame">
        <Grid.RowDefinitions>
            <RowDefinition Height="8"/>
            <RowDefinition Height="16"/>
            <RowDefinition Height="24"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="16"/>
            <RowDefinition Height="8"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="8"/>
            <ColumnDefinition Width="16"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="16"/>
            <ColumnDefinition Width="8"/>
        </Grid.ColumnDefinitions>
        <Thumb x:Name="NWResize" Cursor="SizeNWSE" Background="Black" Grid.Row="0" Grid.Column="0" Grid.RowSpan="2" Grid.ColumnSpan="2" DragDelta="NWResize_DragDelta"/>
        <Thumb x:Name="NEResize" Cursor="SizeNESW" Background="Black" Grid.Row="0" Grid.Column="3" Grid.RowSpan="2" Grid.ColumnSpan="2" DragDelta="NEResize_DragDelta"/>
        <Thumb x:Name="SWResize" Cursor="SizeNESW" Background="Black" Grid.Row="4" Grid.Column="0" Grid.RowSpan="2" Grid.ColumnSpan="2" DragDelta="SWResize_DragDelta"/>
        <Thumb x:Name="SEResize" Cursor="SizeNWSE" Background="Black" Grid.Row="4" Grid.Column="3" Grid.RowSpan="2" Grid.ColumnSpan="2" DragDelta="SEResize_DragDelta"/>
        <Thumb x:Name="NResize" Cursor="SizeNS" Background="Black" Margin="1,0,1,0" Grid.Row="0" Grid.Column="2" DragDelta="NResize_DragDelta"/>
        <Thumb x:Name="SResize" Cursor="SizeNS" Background="Black" Margin="1,0,1,0" Grid.Row="5" Grid.Column="2" DragDelta="SResize_DragDelta"/>
        <Thumb x:Name="WResize" Cursor="SizeWE" Background="Black" Margin="0,1,0,1" Grid.Row="2" Grid.Column="0" Grid.RowSpan="2" DragDelta="WResize_DragDelta"/>
        <Thumb x:Name="EResize" Cursor="SizeWE" Background="Black" Margin="0,1,0,1" Grid.Row="2" Grid.Column="4" Grid.RowSpan="2" DragDelta="EResize_DragDelta"/>
        <DockPanel Grid.Row="1" Grid.Column="1" Grid.RowSpan="2" Grid.ColumnSpan="3">
            <Button DockPanel.Dock="Right" Padding="8,0" Click="OnClose">
                <Image Source="images/ChromeClose.png" Height="24" Width="24" />
            </Button>
            <Thumb x:Name="Caption" Cursor="SizeAll" Background="DarkGray" DragDelta="Caption_DragDelta"/>
        </DockPanel>
        <Rectangle Fill="LightGray" Grid.Row="3" Grid.Column="1" Grid.RowSpan="2" Grid.ColumnSpan="3"/>
        <Canvas x:Name="Body" />
    </Grid>
</UserControl>