/// <summary>
/// Highlight the accessible object with a red border.
/// </summary>
public void Highlight()
{
Rectangle objectLocation = Location;
SystemWindow window = Window;
Rectangle windowLocation = window.Rectangle;
using (WindowDeviceContext windowDC = window.GetDeviceContext(false))
{
using (Graphics g = windowDC.CreateGraphics())
{
g.DrawRectangle(new Pen(Color.Red, 4), objectLocation.X - windowLocation.X, objectLocation.Y - windowLocation.Y, objectLocation.Width, objectLocation.Height);
}
}
}