C# Winform无边框移动窗体

鼠标点击某个控件时的移动

  #region 鼠标拖动  [DllImport("user32.dll")]  public static extern bool ReleaseCapture();  [DllImport("user32.dll")]  public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);  public const int WM_SYSCOMMAND = 0x0112;  public const int SC_MOVE = 0xF010;  public const int HTCAPTION = 0x0002;  private void panel1_MouseDown(object sender, MouseEventArgs e)  {   ReleaseCapture();   SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);  }