XHPZPC/XHPZ.Desktop/PracticeWindow.xaml

<Window x:Class="XHPZ.Desktop.PracticeWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:XHPZ.Desktop"
        mc:Ignorable="d"
        Title="PracticeWindow" Width="1280"
    Height="800"
    AllowsTransparency="True"
    Background="Transparent"
    Opacity="1"
   Loaded="Window_Loaded"
    ShowInTaskbar="False"
    WindowStyle="None">
    <Grid>
        <Image x:Name="imgCanvas"/>
        <InkCanvas Grid.Row="0" x:Name="blackboard_canvas" PreviewMouseRightButtonDown="blackboard_canvas_PreviewMouseRightButtonDown" Background="#021B1919" Visibility="Visible" Grid.ColumnSpan="2"/>
    </Grid>
</Window>