InteractiveSketchAssistant/SketchAssistant/SketchAssistantWPF/CustomCanvas.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Automation.Peers;
using System.Windows.Controls;

namespace SketchAssistantWPF
{
    public class CustomCanvas : Canvas
    {
        protected override AutomationPeer OnCreateAutomationPeer()
        {
            return new FrameworkElementAutomationPeer(this);
        }
    }
}