Full screen feature in .NET Compact Framework

Introduction

This was the conversion from my previous posted topic Having full screen without accessing the SHFullScreen API. Basically, it remain accessing the same set of native API by means of p/invoke (Platform Invoke).

FindWindow
MoveWindow
GetWindowRect
SystemParametersInfo

Using the code

In this conversion, I moved the InitFullScreen and DoFullScreen function into a new class FSEngine. Therefore, all you need to do are the below three steps, then you will be ready to ROCK! :p

First, refer the FSEngine in your project.

    Private fse As FSEngine

Second, instantiate and initialize the FSEngine class.

    ' INSTANTIATE THE FSEngine
    fse = New FSEngine
    ' INITIALIZE THE fse
    fse.InitFullScreen()

Third, switch between full screen and normal mode.

    ' SET FULL SCREEN MODE
    If fse.DoFullScreen(True) = 0 Then
        ' RESIZE YOUR MAIN WINDOW
    End If

    ' RESTORE FROM FULL SCREEN MODE
    If fse.DoFullScreen(False) = 0 Then
        ' RESIZE YOUR MAIN WINDOW
    End If

Please refer to previous topic on Full screen for more information.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

hackzai

Web Developer

Malaysia

Member

Hackzai was graduated from Double-E, and being certified as MCSD (VS6) at spring 2003. But move forward with ASP.NET, VB.NET, C#, Silverlight, LINQ, XML

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My vote of 4

b0bi

1:06 25 Jul '11

It was good, but quality suffers code
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Thanks

bigbro_1985

11:07 21 Mar '10

Thank you so much!! Awesome code, I have been trying to do this for days! Thank you!
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Thanks again

adrienf_69

5:05 12 Nov '09

With the thousand solutions I tried, your one was the only one which worked (for Windows CE 5.0, not PocketPC !!!!!). So thanks a lot for stopping my pain in the A...
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Thanks

minity

11:17 31 Jul '08

Thanks for the code, this is true fullscreen!
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An other way to full screen

Andy Zhang

20:25 17 Oct '07

The most full screen applictions are designed as not using the system utilities (SIP or menu). So, we do not need to move the Task/Input Windows. Just to set the size and location to full all workarea, and remove the menu if it exist.
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Re: An other way to full screen

[ .:: bicodeR ::. ]

10:06 6 Dec '07

You can do this with pure .net Set the following properties of the form (in designer or in the code): FormBorderStyle = FormBorderStyle.None; WindowState = FormWindowState.Maximized;
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Easy way to full screen in C#

omanni

4:12 29 Aug '07

I have had the full screen problem also and that C# code worked when I wanted to hide the taskbar, but when I tried to recover the taskbar it didn't.
But I found this very easy way:
In desing mode I have WindowState: Normal.
Then I put this code below in Form's constructor after InitializeComponent();



WindowState = FormWindowState.Maximized;

And now when you open the Form it opens in full screen.

Olli Männistö

FSEngine remains active

CHP7913

4:07 23 Feb '07

Hi all,

I know with should NEVER happen but if my application crash (exception not catched for example), the FSEngine remains active.
It means that the upper part of my application is displayed instead of the menu bar on a PPC 2003. The only way to get it back is to warm boot the mobile.
Any idea on how to skip that problem ?

I know maybe I could start my application again and stop it correctly; the code to disable FSEngine would then be called BUT the problem is that I don't have access to the start menu due to that issue Smile | :)

Maybe someone found a good practice to avoid that one.

Thanks for sharing experience.

the code in C#

alex_boyer

23:43 9 Feb '06

using System.Runtime.InteropServices;

using System;

 

public class FSEngine 

{

	

	

    

	private const int SPI_SETWORKAREA = 47;

    

	private const int SPI_GETWORKAREA = 48;

    

	private const int SPIF_UPDATEINIFILE = 0x01;

    

	private IntPtr hWndInputPanel;

    

	private IntPtr hWndSipButton;

    

	private IntPtr hWndTaskBar;

    

	private RECT rtDesktop;

    

	private RECT rtNewDesktop;

    

	private RECT rtInputPanel;

    

	private RECT rtSipButton;

    

	private RECT rtTaskBar;

    

	[DllImport("coredll.dll")]

	extern private static IntPtr FindWindowW(string lpClassName, string lpWindowName);

    

	[DllImport("coredll.dll")]

	extern private static int MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, int bRepaint) ;

    

	[DllImport("coredll.dll")]

	extern private static int SetRect(ref RECT lprc, int xLeft, int yTop, int xRight, int yBottom) ;

	

	[DllImport("coredll.dll")]

	extern public static int GetWindowRect(IntPtr hWnd, ref RECT lpRect) ;

		    

	[DllImport("coredll.dll")]

	extern private static int SystemParametersInfo(int uiAction, int uiParam, ref RECT pvParam, int fWinIni) ;

    

	public int InitFullScreen() 

	{

		// // Declare & Instatiate local variable

		int Result = 0;

		try 

		{

			if ((SystemParametersInfo(SPI_GETWORKAREA, 0, ref rtDesktop, 0) == 1)) 

			{

				// // Successful obtain the system working area (Desktop)

				SetRect(ref rtNewDesktop, 0, 0, 240, 320);

			}

			// // Find the Input panel window handle

			hWndInputPanel = FindWindowW("SipWndClass", null);

			// // Checking...

			if ((hWndInputPanel.ToInt64() != 0)) 

			{

				// // Get the original Input panel window size

				GetWindowRect(hWndInputPanel, ref rtInputPanel);

			}

			// // Find the SIP Button window handle

			hWndSipButton = FindWindowW("MS_SIPBUTTON", null);

			// // Checking...

			if ((hWndSipButton.ToInt64() != 0)) 

			{

				// // Get the original Input panel window size

				GetWindowRect(hWndSipButton, ref rtSipButton);

			}

			// // Find the Taskbar window handle

			hWndTaskBar = FindWindowW("HHTaskBar", null);

			// // Checking...

			if ((hWndTaskBar.ToInt64() != 0)) 

			{

				// // Get the original Input panel window size

				GetWindowRect(hWndTaskBar, ref rtTaskBar);

			}

		}

		catch (Exception ex) 

		{

			// // PUT YOUR ERROR LOG CODING HERE

			// // Set return value

			Result = 1;

		}

		// // Return result code

		return Result;

	}

    

	public int DoFullScreen(bool mode) 

	{

		// // Declare & Instatiate local variable

		int Result = 0;

		try 

		{

			if ((mode == true)) 

			{

				// // Update window working area size

				SystemParametersInfo(SPI_SETWORKAREA, 0, ref rtNewDesktop, SPIF_UPDATEINIFILE);

				if ((hWndTaskBar.ToInt64() != 0)) 

				{

					// // Hide the TaskBar

					MoveWindow(hWndTaskBar, 0, rtNewDesktop.bottom, (rtTaskBar.right - rtTaskBar.left), (rtTaskBar.bottom - rtTaskBar.top), 0);

				}

				if ((hWndInputPanel.ToInt64() != 0)) 

				{

					// // Reposition the input panel 

					MoveWindow(hWndInputPanel, 0, (rtNewDesktop.bottom 

						- (rtInputPanel.bottom - rtInputPanel.top)), (rtInputPanel.right - rtInputPanel.left), (rtInputPanel.bottom - rtInputPanel.top), 0);

				}

				if ((hWndSipButton.ToInt64() != 0)) 

				{

					// // Hide the SIP button 

					MoveWindow(hWndSipButton, 0, rtNewDesktop.bottom, (rtSipButton.right - rtSipButton.left), (rtSipButton.bottom - rtSipButton.top), 0);

				}

			}

			else 

			{

				// // Update window working area size

				SystemParametersInfo(SPI_SETWORKAREA, 0, ref rtDesktop, SPIF_UPDATEINIFILE);

				// // Restore the TaskBar

				if ((hWndTaskBar.ToInt64() != 0)) 

				{

					MoveWindow(hWndTaskBar, rtTaskBar.left, rtTaskBar.top, (rtTaskBar.right - rtTaskBar.left), (rtTaskBar.bottom - rtTaskBar.top), 0);

				}

				// // Restore the input panel

				if ((hWndInputPanel.ToInt64() != 0)) 

				{

					MoveWindow(hWndInputPanel, rtInputPanel.left, (rtDesktop.bottom 

						- ((rtInputPanel.bottom - rtInputPanel.top) 

						- (rtTaskBar.bottom - rtTaskBar.top))), (rtInputPanel.right - rtInputPanel.left), (rtInputPanel.bottom - rtInputPanel.top), 0);

				}

				if ((hWndSipButton.ToInt64() != 0)) 

				{

					// // Restore the SIP button 

					MoveWindow(hWndSipButton, rtSipButton.left, rtSipButton.top, (rtSipButton.right - rtSipButton.left), (rtSipButton.bottom - rtSipButton.top), 0);

				}

			}

		}

		catch (Exception ex) 

		{

			// // PUT YOUR ERROR LOG CODING HERE

			// // Set return value

			Result = 1;

		}

		// // Return result code

		return Result;

	}

    

	[StructLayout(LayoutKind.Sequential)]

		public struct RECT 

	{

        

		public int left;

        

		public int top;

        

		public int right;

        

		public int bottom;

	}

}

Re: the code in C#

hackzai

15:12 13 Feb '06

Thanks alex_boyer to convert the code from VB.NET to C#. HACKZAI~ YOUR BUSINESS NEED, OUR CUSTOM MADE
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Re: the code in C#

danyoh

19:02 13 Dec '06

Thanke you... have nice day.
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Re: the code in C#

ram krishna pattnayak

22:23 25 Mar '08

Thanks alex_boyer for the nice code in C#
I follow your code and do some changes in my requirement i want hide the sip key icon and start button on form load in C# ,my application is working on button click but it not work in Form load ,please help me immediately.I send my code please refer it and give me some suggestion.

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
namespace SIPkey
{
class FSEngine
{

private const int SPI_SETWORKAREA = 47;

private const int SPI_GETWORKAREA = 48;

private const int SPIF_UPDATEINIFILE = 0x01;

private IntPtr hWndInputPanel;

private IntPtr hWndSipButton;

private IntPtr hWndTaskBar;

private RECT rtDesktop;

private RECT rtNewDesktop;

private RECT rtInputPanel;

private RECT rtSipButton;

private RECT rtTaskBar;

[DllImport("coredll.dll")]
extern private static IntPtr FindWindowW(string lpClassName, string lpWindowName);

[DllImport("coredll.dll")]
extern private static int MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, int bRepaint);

[DllImport("coredll.dll")]
extern private static int SetRect(ref RECT lprc, int xLeft, int yTop, int xRight, int yBottom);

[DllImport("coredll.dll")]
extern public static int GetWindowRect(IntPtr hWnd, ref RECT lpRect);

[DllImport("coredll.dll")]
extern private static int SystemParametersInfo(int uiAction, int uiParam, ref RECT pvParam, int fWinIni);

public int InitFullScreen()
{
// // Declare & Instatiate local variable
int Result = 0;
try
{
if ((SystemParametersInfo(SPI_GETWORKAREA, 0, ref rtDesktop, 0) == 1))
{
// // Successful obtain the system working area (Desktop)
SetRect(ref rtNewDesktop, 0, 0, 240, 320);
}
// // Find the Input panel window handle
hWndInputPanel = FindWindowW("SipWndClass", null);
// // Checking...
if ((hWndInputPanel.ToInt64() != 0))
{
// // Get the original Input panel window size
GetWindowRect(hWndInputPanel, ref rtInputPanel);
}
// // Find the SIP Button window handle
hWndSipButton = FindWindowW("MS_SIPBUTTON", null);
// // Checking...
if ((hWndSipButton.ToInt64() != 0))
{
// // Get the original Input panel window size
GetWindowRect(hWndSipButton, ref rtSipButton);
}
// // Find the Taskbar window handle
hWndTaskBar = FindWindowW("HHTaskBar", null);
// // Checking...
if ((hWndTaskBar.ToInt64() != 0))
{
// // Get the original Input panel window size
GetWindowRect(hWndTaskBar, ref rtTaskBar);
}
}
catch (Exception ex)
{
// // PUT YOUR ERROR LOG CODING HERE
// // Set return value
Result = 1;
}
// // Return result code
return Result;
}

public int DoFullScreen(bool mode)
{
// // Declare & Instatiate local variable
int Result = 0;
try
{
if ((mode == true))
{
// // Update window working area size
SystemParametersInfo(SPI_SETWORKAREA, 0, ref rtNewDesktop, SPIF_UPDATEINIFILE);
if ((hWndInputPanel.ToInt64() != 0))
{
// // Reposition the input panel
//MoveWindow(hWndInputPanel, 0, (rtNewDesktop.bottom
//- (rtInputPanel.bottom - rtInputPanel.top)), (rtInputPanel.right - rtInputPanel.left), (rtInputPanel.bottom - rtInputPanel.top), 0);
}
if ((hWndSipButton.ToInt64() != 0))
{
// // Hide the SIP button
MoveWindow(hWndSipButton, 0, rtNewDesktop.bottom, (rtSipButton.right - rtSipButton.left), (rtSipButton.bottom - rtSipButton.top), 0);
}
}
else
{
// // Update window working area size
SystemParametersInfo(SPI_SETWORKAREA, 0, ref rtDesktop, SPIF_UPDATEINIFILE);

// // Restore the input panel
if ((hWndInputPanel.ToInt64() != 0))
{
//MoveWindow(hWndInputPanel, rtInputPanel.left, (rtDesktop.bottom - ((rtInputPanel.bottom - rtInputPanel.top)- (rtTaskBar.bottom - rtTaskBar.top))), (rtInputPanel.right - rtInputPanel.left), (rtInputPanel.bottom - rtInputPanel.top), 0);
//MoveWindow(hWndInputPanel, 0,26,220,254, 0);
}
if ((hWndSipButton.ToInt64() != 0))
{
// // Restore the SIP button
MoveWindow(hWndSipButton, rtSipButton.left, rtSipButton.top, (rtSipButton.right - rtSipButton.left), (rtSipButton.bottom - rtSipButton.top), 0);
// MoveWindow(hWndInputPanel, 0, 26, 220, 254, 0);
}
}
}
catch (Exception ex)
{
// // PUT YOUR ERROR LOG CODING HERE
// // Set return value
Result = 1;
}
// // Return result code
return Result;
}

[StructLayout(LayoutKind.Sequential)]
public struct RECT
{

public int left;

public int top;

public int right;

public int bottom;
}

}
}
/////////////////////
I Call the key board hiding code in button click
private void button1_Click(object sender, EventArgs e)
{
if (fs.DoFullScreen(true) == 0)
{
if (inputPanel1.Enabled == true)
{
inputPanel1.Enabled = false;
}

fs.DoFullScreen(true);
}

}
For restoring the keyboard
private void button2_Click(object sender, EventArgs e)
{
// fs.InitFullScreen();
fs.DoFullScreen(false);

}
but i want the thing in form load but in form load when i call these it not working please help me.

Ram Krishna Pattnayak
Software Developer(SDS)
Sun-Dew Solutions Pvt.Ltd
www.sundewsolutions.com
kolkata

Re: the code in C#

alex_boyer

22:48 25 Mar '08

Thanks, i just translate, all the work has been done by hackzai.
For your problem:
- what means it does not work ?
- Moreover, why do you call fs.DoFullScreen(true) twice ?
- What changes have you made between the both code ?

I remember that i was using this code in OnLoad(); i will verify with my previous collegues. Have you try on another event like OnShow or OnVisible (if they exist, i can't remember).

Regards,
AB

Re: the code in C#

ram krishna pattnayak

0:32 26 Mar '08

Thanks for replay
-the means of doesn't work,it work in button click but not in form load.
-i use fs.DoFullScreen(true) twice,one for check the sip key visiblity another one for sip key hiding.
-i only omit some line of code regarding task bar hiding and sip keyboard view resize.
there is no function in name OnShow() or OnVisible() i use in onload() but it not work .

please help me .how it work in page load ,after page load in button click it work perfectly.

Ram Krishna Pattnayak
Software Developer(SDS)
Sun-Dew Solutions Pvt.Ltd
www.sundewsolutions.com
kolkata

Re: the code in C#

alex_boyer

7:09 26 Mar '08

I try to retrieve my old code where i use it in OnLoad(). I remember that i use it in OnActivate() or something like that. Let's try this. Moreover, does it works if you leave the orginal code (without your modifications) ?
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Re: the code in C#

zkshadow

16:33 7 Jul '09

Thank you!
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FSEngine in C#

jamo77

21:28 8 Jan '06

Hi, someone has tried to use it with C#? I get some error, could someone help me please? Thanks in advance
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From microsoft docs... save you some time

Jason Allen Smith

10:40 21 Jun '05

An application creates a FullScreen form by setting its WindowState to Maximized as follows:

form.WindowState = FormWindowState.Maximized;

If there is a MenuBar (and / or a ToolBar on Pocket PC) attached to the Form, then it can't be made FullScreen.

On version 1.0 of the .NET Compact Framework on Pocket PC, to create a FullScreen application the WindowState property must be set inside the Form's OnLoad.

Re: From microsoft docs... save you some time

Anonymous

7:29 12 Jul '05

right. .net CF can do it easy. why use other class or library?
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This does not work all time

xbertx1

10:57 23 May '06

I tried to create a full screen window on a Windows CE 5.0* based PocketPC. Maximizing the window still left the taskbar on the bottom of the desktop. I tried SHFullScreen but it didn't work like expected (maybe my fault). The only thing that worked is this class.

* Please note that Windows CE 5.0 and Windows Mobile 5 are somewhat different. Native Windows CE 5.0 looks like a real Windows Desktop.

Michael Berthold
Carstens & Co. GmbH Informationsmanagement
http://www.carstens-informationsmanagement.de

Message Removed

stefankruzel

23:11 6 Dec '06

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Re: This does not work all time

c01mr

4:54 18 Jan '07

How do I run this code? /mikey
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stefankruzel

0:15 19 Jan '07

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Re: This does not work all time

entraped.isoLated

0:32 31 Jul '07

when i import the coredll.dll file it gives me the error:

System.DllNotFoundException: Unable to load DLL (coredll.dll).
at WindowsApplication1.Form1.FindWindow(String lpClassName, String lpWindowName)
at WindowsApplication1.Form1.button1_Click(Object sender, EventArgs e) in d:\usman aftab butt\app7\windowsapplication1\windowsapplication1\form1.cs:line 124

Can you please tell me why isnt it working

Good job.

SpeedySpeedy

21:29 22 Mar '05

Good job. I can't believe this.
Yesterday I solved my full screen problem on Windows CE (It took me 6 hours to get the
glue) I've done it in VB with Form.Size and Form.Location. It was an odyssey first I tried
Form.FromBorderstile, which don't work. Then I tried to get the Window handle of the Taskbar, and hide the window, which left a kind of shadow window of the Taskbar. At last I tried to relocate the Window and it worked, and now this. = Smile | :)