/// <summary>
/// 挿入位置カーソルを消します
/// </summary>
private void HideAdorner()
{
if (this._InsertionAdorner != null)
{
this._InsertionAdorner.Detach();
this._InsertionAdorner = null;
}
}
/// <summary>
/// 挿入位置カーソルを表示します
/// </summary>
/// <param name="position"></param>
private void ShowAdorner(VerticalAlignment position)
{
this._InsertionAdorner = new InsertionAdorner(this, position);
}