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C# 2005 : How do I Disable icon in Alt+Tab list

487 Recognized Expert Contributor
I did below and it is not showing in task bar but when I press Alt + Tab then it is showing in that list. How to disable there.
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  1. ShowInTaskbar = false; 
Jun 5 '08 #1
4 2212
Plater
7,872 Recognized Expert Expert
if you .Hide() your window (remember to provide a way to show it again) it will not show up in alt+tab.

I think the other alternative is to use some win32_api
Jun 5 '08 #2
CyberSoftHari
487 Recognized Expert Contributor
Thanks, and i got the solution using user32.dll like

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  1.  
  2. 'Decleration part
  3.        #region Remove from Alt Tab
  4.   [DllImport("user32.dll")]
  5.   public static extern int SetWindowLong(IntPtr window, int index, int value);
  6.   [DllImport("user32.dll")]
  7.   public static extern int GetWindowLong(IntPtr window, int index);
  8.   const int GWL_EXSTYLE = -20;
  9.   const int WS_EX_TOOLWINDOW = 0x00000080;
  10.   const int WS_EX_APPWINDOW = 0x00040000;
  11.   #endregion
calling after InitializeCompo nent, or form load events
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  1.   int windowStyle = GetWindowLong(this.Handle, GWL_EXSTYLE);
  2.   SetWindowLong(this.Handle, GWL_EXSTYLE, windowStyle | TOOLWINDOW);
Jun 6 '08 #3
Plater
7,872 Recognized Expert Expert
Does that cause any changes to your forms layout or borderstyle?
Jun 9 '08 #4
CyberSoftHari
487 Recognized Expert Contributor
Does that cause any changes to your forms layout or borderstyle?
No, everything usual.
Jun 9 '08 #5

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