1  public Ex_Panel()
 2         {
 3             InitializeComponent();
 4             this.SetStyle(ControlStyles.OptimizedDoubleBuffer |
 5                         ControlStyles.ResizeRedraw |
 6                         ControlStyles.AllPaintingInWmPaint, true);
 7         }
 8 
 9 
10         Bitmap desBmp = (Bitmap)global::Custom.Controls.Properties.Resources.logicback;
11         private void Ex_Panel_Paint(object sender, PaintEventArgs e)
12         {
13             Rectangle rect = e.ClipRectangle;
14             BufferedGraphicsContext currentContext = BufferedGraphicsManager.Current;
15             BufferedGraphics myBuffer = currentContext.Allocate(e.Graphics, e.ClipRectangle);
16             Graphics g = myBuffer.Graphics;
17             g.SmoothingMode = SmoothingMode.HighQuality;
18             g.PixelOffsetMode = PixelOffsetMode.HighSpeed;
19             g.Clear(this.BackColor);
20             using (TextureBrush Txbrus = new TextureBrush(desBmp))
21                 g.FillRectangle(Txbrus, rect);
22             myBuffer.Render(e.Graphics);
23             g.Dispose();
24             myBuffer.Dispose();//释放资源
25         }