Comments on: Hide Form from Alt+Tab

By: Alessandro

Alessandro — Mon, 05 Jul 2010 16:54:54 +0000

and for vb.net developer :

Protected Overrides ReadOnly Property CreateParams() As CreateParams
Get
Dim cp As CreateParams = MyBase.CreateParams
' turn on WS_EX_TOOLWINDOW style bit
cp.ExStyle = cp.ExStyle Or &H80
Return cp
End Get
End Property

bye

By: Alessandro

Alessandro — Mon, 05 Jul 2010 16:53:51 +0000

many many thanks !!!

By: Matteo

Matteo — Fri, 30 Apr 2010 03:17:29 +0000

Oops, I forgot that to add the line

ShowInTaskbar = false;

For the form your are hiding.

By: Matteo

Matteo — Fri, 30 Apr 2010 03:15:59 +0000

Okay, I think I've found a definitive solution that simply is not sensitive to what kind of window style the window you are keeping hidden from Alt-Tab has. Just place this in the constructor of your form:

// Keep this program out of the Alt-Tab menu

Form form1 = new Form ( );

form1.FormBorderStyle = FormBorderStyle.FixedToolWindow;
form1.ShowInTaskbar = false;

Owner = form1;

By: Morten Kirsbo

Morten Kirsbo — Sat, 06 Feb 2010 14:38:28 +0000

Thank you very much, the code work's perfect. I've converted it to VB.NET should anyone need it:

Protected Overloads Overrides ReadOnly Property CreateParams() As CreateParams
Get
Dim cp As CreateParams = MyBase.CreateParams
' turn on WS_EX_TOOLWINDOW style bit
cp.ExStyle = cp.ExStyle Or &H80
Return cp
End Get
End Property

By: Beissi

Beissi — Fri, 15 Jan 2010 08:21:31 +0000

It works after program start. But once I have set window state to normal and then back to minimized, the tool appears in the alt+tab-list.

(I have a tool reduced to a notifcation icon which checks for a file periodically and pops up with the file content if it finds one.)

private void toggleVisible(bool mode) {
this.TopMost = mode;
if (mode) {
this.WindowState = FormWindowState.Normal;
} else {
//also called from constructor:
this.WindowState = FormWindowState.Minimized;
this.FormBorderStyle = FormBorderStyle.SizableToolWindow;
this.ShowInTaskbar = false;
}
}

By: sudhir kumar

sudhir kumar — Fri, 08 Jan 2010 04:27:40 +0000

Thanks for making idea of borderless form. Excellent work.

By: Shahid

Shahid — Wed, 07 Oct 2009 05:31:34 +0000

Excellent man! It really works. Thanks

By: Optimus

Optimus — Wed, 19 Aug 2009 14:34:54 +0000

Excellent post. Thank you.

By: santosh

santosh — Mon, 10 Aug 2009 04:22:07 +0000

i am running a exe at the time of system startup.the form's are In-Visible but when i click alt+tab a blank window in visible.how can i ignore that window.please send me the solution through this mail ID.

with Regards,
santosh