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Hiding the form from alt-tab menu

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4.80/5 (9 votes)

Dec 9, 2010

CPOL
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22284

Hiding the form from alt-tab menu

This is a UI tweak for hiding the form from alt-tab menu.
protected override CreateParams CreateParams
{
   get
   {
      CreateParams cp = base.CreateParams;
      cp.ExStyle |= 0x80;
      return cp;
   }
}
Edit: In order to make it work, you have to use Me.ShowInTaskbar = False Description:
WS_EX_TOOLWINDOW bit is turned on by OR-ing ExStyle with 0x80. The following always works,
Me.FormBorderStyle = FormBorderStyle.SizableToolWindow;
Me.ShowInTaskbar = False;
But if you have a borderless form, i.e., FormBorderStyle.None then ShowInTaskbar = False doesn't work. So, we should set the WS_EX_TOOLWINDOW to true in addition to Me.ShowInTaskbar = False.