[DllImport("user32.dll")]

 static extern bool FlashWindowEx(ref FLASHWINFO pwfi);

 [DllImport("user32.dll")]

 static extern bool FlashWindow(IntPtr handle, bool invert);

 [StructLayout(LayoutKind.Sequential)]

 public struct FLASHWINFO

 {

     public UInt32 cbSize;

     public IntPtr hwnd;

     public UInt32 dwFlags;

     public UInt32 uCount;

     public UInt32 dwTimeOut;

 }

 public const UInt32 FLASHW_STOP = 0x00000000;

 public const UInt32 FLASHW_CAPTION = 0x00000001;

 public const UInt32 FLASHW_TRAY = 0x00000002;

 public const UInt32 FLASHW_ALL = 0x00000003;

 public const UInt32 FLASHW_TIMER = 0x00000004;

 public const UInt32 FLASHW_TIMERNOFG = 0x0000000C

 private void button1_Click(object sender, EventArgs e)

 {

 　　//闪烁

 4 　　FLASHWINFO fi = new FLASHWINFO();

 　　fi.cbSize = (uint)Marshal.SizeOf(fi);

 　　fi.hwnd = this.Handle;

 　　fi.dwFlags = FLASHW_TIMER | FLASHW_ALL;

 　　fi.uCount = ;

 　　fi.dwTimeOut = ;

 　　FlashWindowEx(ref fi);

 }

 private void button2_Click(object sender, EventArgs e)

 {

     //任务栏消息提示

     this.WindowState = FormWindowState.Minimized;

     FlashWindow(this.Handle, true);

 }