making windows forms or title bar BLink

making windows forms or title bar BLink

• Allan Kemp

  Thanks, might sound very basic, but can you show me how to consume it How can I pass IntPtr handleToWindow
  

• Seyed

  From the form i want to blink I call it like this:
  
  

  FlashWindow.FlashWindowAPI(this.Handle);

  
  

• Dougal

  I tried it on one of my apps and it worked fine.  Are you trying to have this happen while your app is processing a ton of data or something   If so, you may need to use a multi-threaded timer, which I'm not too familiar with. 
  
  Be sure that your timer is enabled (they're disabled by default) and a decent interval is set.  When I tested it on mine I left the interval set to the default (100) which seemed to be a pretty good timing for a blink effect.  I tested it with Visual Studio 2005 RC.
  
  

• Glynnder

  This would work but for some reason in my application I cant use this. Is there any other way of doing this

  
  

• Sweety103741

  I forgot this struct, you'll need this too
  
  

  using System;     using System.Runtime.InteropServices;     [StructLayout(LayoutKind.Sequential)]     public struct FLASHWINFO     {         public uint cbSize;         public IntPtr hwnd;         public uint dwFlags;         public uint uCount;         public uint dwTimeout;     }

  
  

• Pavel Dournov - MSFT

  Another option:  have you tried using the FlashWindow method located in User32.dll
  
  http://www.codeproject.com/csharp/c__and_api.asp
  
  Search that page for the text FlashWindow - there's a comment on there with a suggestion on how to implement it.
  
  

• jvlake

  I use a call to Win API for this. I wrapped it in this class:
  
    

  using System;     using System.Runtime.InteropServices;     public class FlashWindow     {         // Methods         private FlashWindow()         {         }         public static bool FlashWindowAPI(IntPtr handleToWindow)         {             FLASHWINFO flashwinfo1 = new FLASHWINFO();             flashwinfo1.cbSize = (uint) Marshal.SizeOf(flashwinfo1);             flashwinfo1.hwnd = handleToWindow;             flashwinfo1.dwFlags = 15;             flashwinfo1.uCount = uint.MaxValue;             flashwinfo1.dwTimeout = 0;             return (FlashWindow.FlashWindowEx(ref flashwinfo1) == 0);         }         [DllImport("user32.dll")]         private static extern short FlashWindowEx(ref FLASHWINFO pwfi);         // Fields         public const uint FLASHW_ALL = 3;         public const uint FLASHW_CAPTION = 1;         public const uint FLASHW_STOP = 0;         public const uint FLASHW_TIMER = 4;         public const uint FLASHW_TIMERNOFG = 12;         public const uint FLASHW_TRAY = 2;     } }

  
  

• ngmvista

  Have you tried a Timer control  
  
  

  private void timer1_Tick(object sender, EventArgs e) { if (this.BackColor == SystemColors.Control) this.BackColor = Color.Blue; else this.BackColor = SystemColors.Control; }

  
  
• making windows forms or title bar BLink