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

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.

By: Vachan

Vachan — Tue, 10 Jul 2007 06:00:33 +0000

This is very Good Article.
But if i had open-up my form within MDI.
SO, Is it possible to remove form border or control box from target open-up form ?

By: Dejan Vesić

Dejan Vesić — Thu, 07 Jun 2007 08:37:14 +0000

This is contradiction for this post

There is no way (IMHO) that you can force Taskbar over ANY application – if this is possible, that means than there will be no full screen application.

By: Weston

Weston — Sun, 27 May 2007 14:51:50 +0000

hey,

i was wondering if you could tell me a way to keep the taskbar on top of the full screen program. The “keep task bar on top” is checked but it still doesn’t keep it on top of the full screen program. thanks

By: Dimitris

Dimitris — Tue, 15 May 2007 15:35:53 +0000

This workaround (and all the others that i found on net) has a problem.

I tried this on an MDI app with a toolstrip menu. When the task bar is not on the bottom of the screen, the toolstrip menus that are above the hidden taskbar show on wrong position. They show at the end of the taskbar. Just like if the taskbar was still there !!!

Haven’t found a solution yet.

By: ripal

ripal — Mon, 19 Mar 2007 08:55:30 +0000

hello !! it is so helpful and it is working also but i have problem that when i click on fullscreen button on my screen many flickring is there and after some time it will be give result as fullscreen

By: Ashvin Gunga

Ashvin Gunga — Thu, 22 Feb 2007 11:36:59 +0000

Hi,

I have already worked on the problem I was getting. It’s fixed. Thanks.

Ashvin

By: Ashvin Gunga

Ashvin Gunga — Thu, 22 Feb 2007 06:09:41 +0000

Hi Alex,

I tried the way you suggested on a Windows Mobile Ce 5.0. I have set the FormBorStyle to None and set Location to 0,0. In the load event handler, I have set the size to Bounds.Size or WorkingArea.Size…but it doesn’t solve my problem. First, the task bar is still showing and secondly, I don’t have the title bar.

Do you have any solution so that I can have a form in a Windows Mobile Ce 5.0 c# application to take the screen space completely (even the task bar space) and have the title bar of the screen and also, the screen should not be movable.

Thanks.

Ashvin