public void UpdateGridLayout()
{
    try
    {
        int row;
        int rowspan;
        int col;
        int colspan;

        switch ( ConfigPlayer.PlayerLayoutModeSelect )
        {
            case ConfigPlayer.PlayerLayoutMode.Right:
                row     = 1;
                rowspan = 2;
                col     = 1;
                colspan = 1;
                break;
            case ConfigPlayer.PlayerLayoutMode.Bottom:
                row     = 2;
                rowspan = 1;
                col     = 0;
                colspan = 2;
                break;
            default:
                return;
        }

        // x:Bind経由では更新できなかったので直接設定
        Grid.SetRowSpan     ( _PageNavigation, rowspan );
        Grid.SetColumnSpan  ( _PageNavigation, colspan );

        Grid.SetRow         ( _PagePlayer, row );
        Grid.SetRowSpan     ( _PagePlayer, rowspan );
        Grid.SetColumn      ( _PagePlayer, col );
        Grid.SetColumnSpan  ( _PagePlayer, colspan );
    }
    catch ( Exception e )
    {
        Log.Error( $"{Log.GetThisMethodName}:{e.Message}" );
    }
}

/// <summary>
/// 表示位置調整用マージン
/// </summary>
private Thickness _PageMargin = new();

/// <summary>
/// マウスアクション
/// </summary>
private enum EActionState : int
{
	None = 0,
	PlayerMove,
	PlayerOff,
}

/// <summary>
/// マウスアクション状態
/// </summary>
private EActionState _ActionState = EActionState.None;

/// <summary>
/// ページ移動前の位置
/// </summary>
private Point _BeforePos = new();

/// <summary>
/// マウスダウン処理
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void Page_PointerPressed( object sender, PointerRoutedEventArgs args )
{
	if ( _ActionState != EActionState.None )
	{
		return;
	}

	// ページ内ではなく、メインページ基準でのマウスの入力情報を取得する
	var p = args.GetCurrentPoint( ControlAccess.PageEditerMain );
//	var p = args.GetCurrentPoint( sender as FrameworkElement );

	if ( p.Properties.IsLeftButtonPressed )
	{
		// フォーム移動
		_BeforePos = p.Position;

		_ActionState = EActionState.PlayerMove;
	}
        else if ( p.Properties.IsRightButtonPressed )
	{
		// 非表示
		DrawSet.DisplayPlayer = false;
		Config.EventUpdatePlayerDisplay();

		_ActionState = EActionState.None;
	}
}

/// <summary>
/// マウス移動処理
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void Page_PointerMoved( object sender, PointerRoutedEventArgs args )
{
	if ( _ActionState == EActionState.None )
	{
		return;
	}

	// ページ内ではなく、メインページ基準でのマウスの入力情報を取得する
	var p = args.GetCurrentPoint( ControlAccess.PageEditerMain );
//	var p = args.GetCurrentPoint( sender as FrameworkElement );

	switch ( _ActionState )
	{
		case EActionState.PlayerMove:
			SetPagePosition( p.Position );
			break;
        }
}

/// <summary>
/// マウスアップ処理
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void Page_PointerReleased( object sender, PointerRoutedEventArgs args )
{
	if ( _ActionState == EActionState.None )
	{
		return;
	}

	// ページ内ではなく、メインページ基準でのマウスの入力情報を取得する
	var p = args.GetCurrentPoint( ControlAccess.PageEditerMain );
//	var p = args.GetCurrentPoint( sender as FrameworkElement );

	switch ( _ActionState )
	{
		case EActionState.PlayerMove:
			SetPagePosition( p.Position );
			break;
        }

	_ActionState = EActionState.None;
}


/// <summary>
/// プレイヤー表示位置設定
/// </summary>
/// <param name="aMousePoint"></param>
private void SetPagePosition( Point aMousePoint )
{
	_PageMargin.Left	+= aMousePoint.X - _BeforePos.X;
	_PageMargin.Top		+= aMousePoint.Y - _BeforePos.Y;

	_BeforePos = aMousePoint;

	Margin = _PageMargin;
}