Devexpres下窗体带阴影的边框效果

1     public partial class Form1 : DevExpress.XtraEditors.XtraForm
2     {
3         public Form1()
4         {
5             InitializeComponent();
6             this.FormBorderEffect =        DevExpress.XtraEditors.FormBorderEffect.Default;
7         }
8 
9     }

效果图：