protected override void OnPaint(ConsoleBitmap context)
{
context.Pen = new ConsoleCharacter(' ', null, myFocusStackDepth == Application.FocusManager.StackDepth ? Theme.DefaultTheme.H1Color : Theme.DefaultTheme.DisabledColor);
context.DrawLine(0, 0, Width, 0);
context.DrawLine(0, Height-1, Width, Height-1);
base.OnPaint(context);
}