Comments on: How to make Windows Form app truly Full Screen (and to hide Taskbar) in C#?

By: Paras

Paras — Thu, 12 Jan 2012 09:56:01 +0000

Hello,
Very good article… thanks

By: Dejan Vesić

Dejan Vesić — Sun, 03 Jul 2011 08:31:48 +0000

Glad to help

By: Paft

Paft — Fri, 01 Jul 2011 22:37:06 +0000

Thanx, man! You’re really a god! I’ve spent the entire evening optimizing the fullscreen switch behavior of my app.. Until in the middle of the night have found your amazing solution

By: vineet yadav

vineet yadav — Fri, 29 Apr 2011 18:07:29 +0000

this was really great

By: Gulam Faruque

Gulam Faruque — Tue, 04 Jan 2011 13:10:40 +0000

Excellent work.
Thanks for the code.

By: maik

maik — Tue, 25 May 2010 21:25:57 +0000

This works great. Keep the good work. Thanks!

By: carin

carin — Fri, 19 Mar 2010 11:29:09 +0000

Yet another THANKS!

By: Morgan

Morgan — Thu, 28 Jan 2010 18:15:55 +0000

it does not work, I can not paste the code or download the code without error or missing files

By: RossC

RossC — Thu, 29 Oct 2009 12:14:17 +0000

Another message of thanks! Nice article.

By: dziq

dziq — Wed, 07 Oct 2009 14:07:28 +0000

I will change
private static IntPtr HWND_TOP = IntPtr.Zero;
to
private static IntPtr HWND_NOTOPMOST = new IntPtr(-2);
if you want to use other windows (Alt+Tab)

By: Dejan Vesić

Dejan Vesić — Tue, 30 Jun 2009 22:00:52 +0000

@ Glenn: in order to prevent CTRL + ESC (or any other standard Windows keys for that matter) I would use: Application.AddMessageFilter and appropriate implementation of IMessageFilter. Than just from PreFilterMessage return true for combinations you want to be excluded from processing.

By: pamkkkkk

pamkkkkk — Mon, 20 Apr 2009 13:30:55 +0000

Hi nice solution !

Iuse the following code.

I foud out that the order of commands are importend ! (if you change it want work correct!)

matches this your solution?? please try!

public New() // Formconstructor
{
// if FormStartPosition.Manual is not set, then you can´t set the Form Location !!!
// see msdn documentation
this.StartPosition = FormStartPosition.Manual;

// Set the Form to VirtualScreen (FullScreen)
this.Location = SystemInformation.VirtualScreen.Location;
this.Size = SystemInformation.VirtualScreen.Size;
this.ClientSize = SystemInformation.VirtualScreen.Size;

//maximize The Window to FullScreen without Borders and Titelbar
// erase WindowBorder
this.FormBorderStyle = Windows.Forms.FormBorderStyle.None;
// Set Window to Topmost
this.TopMost = true;
}

By: SREEKESH

SREEKESH — Mon, 20 Apr 2009 08:03:45 +0000

Very Nice Article. Gr8 Job

By: Dejan Vesić

Dejan Vesić — Wed, 15 Apr 2009 22:11:48 +0000

You are welcome

By: dan

dan — Wed, 15 Apr 2009 17:51:54 +0000

Thanks a lot! I need a solution like this for visual basic (not C#) and with a little translation it worked like a champ.

By: Lateef Ahmed

Lateef Ahmed — Mon, 30 Mar 2009 06:50:14 +0000

Your class works like charm.

Thanks for the help.

By: Glenn

Glenn — Fri, 27 Feb 2009 06:49:53 +0000

How to prevent Ctrl + ESC show on the top of the full screen app?

By: Naseem

Naseem — Thu, 19 Feb 2009 20:59:32 +0000

thank you

By: Dejan Vesić

Dejan Vesić — Sat, 27 Dec 2008 07:57:41 +0000

You are welcome.

By: Vijay Daniel M

Vijay Daniel M — Sat, 27 Dec 2008 06:37:38 +0000

Very nice.. Been very helpful.. Keep up the good work. Thank you

By: thomas.speaking | How to make a Windows Form Full Screen in C#?

thomas.speaking | How to make a Windows Form Full Screen in C#? — Sat, 29 Nov 2008 14:18:02 +0000

[...] Momenteel ben ik bezig met het uitzoeken hoe ik het programma fullscreen kan laten werken zoals in een Powerpoint-presentatie (en dus ook de taakbalk wegwerken). De oplossing is te vinden op http://www.vesic.org! [...]

By: Dejan Vesić

Dejan Vesić — Wed, 02 Jul 2008 18:18:45 +0000

I do not see problems with performance; once set, no other performance losses should be noticed.

By: Kevin

Kevin — Tue, 01 Jul 2008 13:41:51 +0000

What does this solution do to the performence??
I’m thinking of using this but I can also let the user set the taskbar to auto hide it.

By: Dejan Vesić

Dejan Vesić — Sun, 04 May 2008 17:47:41 +0000

Thanks

By: Tommy

Tommy — Wed, 30 Apr 2008 10:23:31 +0000

Hi Dejan,
Thanks a lot for your suggestion. I’ll give it a try. BTW, great article.

By: Dejan Vesić

Dejan Vesić — Wed, 16 Apr 2008 05:49:44 +0000

I do not know how to do that from top of my head, but if you can (have access to machine and rights to change Registry), you can replace user's standard shell application (explorer.exe) with your application and take over all of control. (look for example here: http://support.microsoft.com/kb/143164) However, this is rather dangerous technique and suggest to test it a lot (using for example Virtual PC) before releasing it as a general solution.

By: Tommy

Tommy — Wed, 16 Apr 2008 05:19:37 +0000

This technique doesn’t prevent the user from accessing the taskbar by pressing (Control + Escape) or pressing on the Windows button on the keyboard. Is there anyway of prevent the users from accessing the taskbar **at all**? The user shouldn’t be allow to exit your application to run other apps. Any idea?

By: Dejan Vesić

Dejan Vesić — Mon, 08 Oct 2007 13:39:35 +0000

This is standard Windows Library, and should exist on each machine. You just add reference to it.

Regards,
Dejan

By: Francesco

Francesco — Mon, 08 Oct 2007 12:46:11 +0000

I can’t find the user32.dll in my VisualStudio APIs. I’ve downloaded it but I can’t add this library as reference so I try to put it in the folder of my DeviceApplication but it doesn’t work..Could someone help me?

By: Dejan Vesić

Dejan Vesić — Wed, 01 Aug 2007 10:16:41 +0000

I am not aware of possibility to do so. You can make parent (container) form full screen, but I failed to do same for child forms in MDI form.