嗨 - 发现以下代码不仅适用于面板而且适用于按钮，我猜其他控件 - 除了PictureBox

公共类TransparentPanel：Panel< ==更改为按钮，例如，工作
 {
 Timer Wriggler = new Timer（） ; 
 public TransparentPanel（）
 {
 Wriggler.Tick + = new EventHandler（TickHandler）; 
 this.Wriggler.Interval = 500; 
 this.Wriggler.Enabled = true; 
} 
 protected void TickHandler（对象发送者，EventArgs e）
 {
 this.InvalidateEx（）; 
} 
 protected override CreateParams CreateParams 
 {
 get 
 {
 CreateParams cp = base.CreateParams; 
 cp.ExStyle | = 0x00000020; // WS_EX_TRANSPARENT 
返回cp; 
} 
} 
 protected void InvalidateEx（）
 {
 if（Parent == null）
 {
 return; 
} 
 Rectangle rc = new Rectangle（this.Location，this.Size）; 
 Parent.Invalidate（rc，true）; 
} 
 protected override void OnPaintBackground（PaintEventArgs pevent）
 {
 //不允许背景被绘制
} 
} 

hi how to create transparent panel for use png image?

and how to create animation for panel show???

Hi - Found the following code whith works not only for panels but also for buttons and I guess other controls --except PictureBox

public class TransparentPanel : Panel <==change to Button for instance, and works
    {
        Timer Wriggler = new Timer();
        public TransparentPanel()
        {
            Wriggler.Tick += new EventHandler(TickHandler);
            this.Wriggler.Interval = 500;
            this.Wriggler.Enabled = true;
        }
        protected void TickHandler(object sender, EventArgs e)
        {
            this.InvalidateEx();
        }
        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams cp = base.CreateParams;
                cp.ExStyle |= 0x00000020; //WS_EX_TRANSPARENT 
                return cp;
            }
        }
        protected void InvalidateEx()
        {
            if (Parent == null)
            {
                return;
            }
            Rectangle rc = new Rectangle(this.Location, this.Size);
            Parent.Invalidate(rc, true);
        }
        protected override void OnPaintBackground(PaintEventArgs pevent)
        {
            // Do not allow the background to be painted  
        }
    }