winapiのFlashWindowを呼び出す

1.  
using System.Runtime.InteropServices;
2.     
[DllImport("user32.dll")]
		public static extern bool FlashWindow(
			IntPtr hWnd,     // handle to window
			bool bInvert   // flash status
			);
3.  
IntPtr handle=this.Handle;
FlashWindow(handle,true);