拖放事件返回窗体中的位置，拖放在flowLayoutPanel中

我正在拖放FlowlayoutPanel中的pictureBox，但事件返回表单中的位置…我需要这个位置在FlowLayoutPanel(图片框是在FlowLayoutPanel和拖放那里)

   public Form1()
    {
        InitializeComponent();
        flowLayoutPanel1.AllowDrop = true;
    }

    private void pictureBox_MouseDown(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            picBox = (PictureBox)sender;
            if (picBox.Image != null)
            {
                var dragImage = new Bitmap((Bitmap)picBox.Image, picBox.Size);
                IntPtr icon = dragImage.GetHicon();
                Cursor.Current = new Cursor(icon);
                DoDragDrop(picBox.Image, DragDropEffects.Copy);
            }
        }
    }

        void Form1_DragEnter(object sender, DragEventArgs e)
    {
        if (e.Data.GetDataPresent(typeof(Bitmap)))
            e.Effect = DragDropEffects.Copy;
    }
    // Occurs when the user releases the mouse over the drop target 
    void Form1_DragDrop(object sender, DragEventArgs e)
    {
       MessageBox.Show("Posicao x " + e.Y + "Posicao Y " + e.Y);//reutrn the position in form, not in flowLayoutPanel
    }

var point = flowLayoutPanel1.PointToClient(new Point(e.X, e.Y));