Winform 使用panel 自定义拖动窗体

private  void panel1_MouseDown(object sender,  MouseEventArgs
       {
FromCustomStyle.MoveForm(this, this.panel1);
        }
///<summary>
///拖动Panel 窗体移动
///</summary>
///<param name="form1">窗口实例</param>
///<param name="panel1">要拖动的Panel</param>
public  static void MoveForm(Form form1,System.Windows.Forms.Panel
       {
            ReleaseCapture();
//*********************调用移动无窗体控件函数  
 
       }
//定义无边框窗体Form  
DllImport("user32.dll")]//*********************拖动无窗体的控件  
public  static extern bool
DllImport("user32.dll")]
public  static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int
public  const int
public  const int
public const int