<Window x:Class="ShapeDrawingApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Shape Drawing App" Width="800" Height="600">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <!-- Buttons for selecting shapes -->
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Grid.Row="0">
            <Button Name="btnEllipse" Content="Ellipse" Click="btnEllipse_Click"/>
            <Button Name="btnRectangle" Content="Rectangle" Click="btnRectangle_Click"/>
            <Button Name="btnCircle" Content="Circle" Click="btnCircle_Click"/>
            <Button Name="btnLine" Content="Line" Click="btnLine_Click"/>
        </StackPanel>

        <!-- Drawing Canvas -->
        <Canvas Name="drawingCanvas" Grid.Row="1" Background="White"
                MouseDown="drawingCanvas_MouseDown"
                MouseUp="drawingCanvas_MouseUp"
                MouseMove="drawingCanvas_MouseMove"/>
    </Grid>
</Window>