Javed Chaudhry

Formula 313 - The Story of Hope & Believe

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1. Retrieving Location Through GPS
2. Retrieving Location Through Cell Tower Information

Retrieving Location Through GPS on your Windows Mobile Device

The code to find the latitude and longitude through GPS normally delivers with samples of windows SDK. These are included in windows SDK 5 and 6.  You can find those here at this location on your system hard drive

C:\Program Files\Windows Mobile 6 SDK\Samples\PocketPC\CS\GPS

The path may be differed according to the installation path on system. When you ‘ll get that project , open it in a visual studio and build it. Now go to the bin directory and there, you ‘ll see the library with the name Microsoft. WindowsMobile.Samples.Location.dll. To find the latitude and longitude, you ‘ll have to use this dll as reference in your project.

If you are unable to find the project , you can also download it from here

Here is the code to retrieve the latitude and longitude synchronously

InitializeComponent();
gps = new Gps();
gps.Open();

GpsPosition position = gps.GetPosition();
LatLong location = new LatLong();

 if (position.LatitudeValid)
                location.Latitude = position.Latitude;
 if (position.LongitudeValid)
                location.Longitude = position.Longitude;
if (position.HeadingValid)
                location.Heading = position.Heading;

 StringBuilder sb = new StringBuilder();

sb.AppendLine();

 sb.Append("Latitude = ");

sb.AppendLine(location.Latitude.ToString());

sb.Append("Longitude = ");

sb.AppendLine(location.Longitude.ToString());

sb.Append("Heading = ");

sb.AppendLine(location.Heading.ToString());

label1.Text = sb.ToString();

gps.Close();
Close();

-

Here is the code to find latitude and longitude asynchronously

menuLocationUpdates.Checked = true;
gps.LocationChanged += new
LocationChangedEventHandler(gps_LocationChanged);

-

Accessing Cell Tower Information on your Windows Mobile Device

To retrieve cell tower information, you should have knowledge about Radio Interface Layer (RIL) of the device. Microsoft provides the MDD (Model Device Driver ) to access the RIL layer at high level. For this info; you ‘ll have to do the following

1. Call the single RIL function
2. Call additional function to get additional info
3. Close the handle after using RIL functions

Let’s take an example :

You want to get the cell tower information. Now what ‘ll you do

1. You ‘ll use RIL_Initialize , to initialize the radio layer interface for use of application .
2. Use RIL_GetCellTowerInfo, to retrieve cell tower info.
3. Use RIL_Deinitialize, to close and clean up resources.

RILCELLTOWERINFO structure gives you the info about many things. Few of those are:

1. Mobile Country Code (MCC)
2. Mobile Network Code (MNC)
3. Location Area Code (LAC)
4. Cell ID (CID)
5. Base Station ID
6. Broadcast Control Channel (BCCH)
7. Received Signal Level (RX Level)
8. Received Signal Quality
9. Idle Time Slot
10. ID of GPRS Cellular Tower

There are many more you can read about the structure of RILCELLTOWERINFO here

Luckily, you are still not able to find latitude and longitude with this info without GPS. You ‘ll have to pass some parameters of RILCELLTOWERINFO to some internet service. Like Yahoo, Google. If you want to use Yahoo or Google service then you ‘ll send this info to any of them

• Cell ID
• Location Area Code
• Mobile Country Code
• Mobile Network Code

In return these services ‘ll return back the latitude and longitude. So one of the most important thing is RIL understanding and usage of Yahoo and Google Service

Code to Access Radio Interface Layer for Information Retrievel

Though you can find the RIL usage on MSDN site but i found the code at this url here on Dale Lane’s blog. For you convenience, i am going to paste the code below

using System;
using System.Threading;
using System.Runtime.InteropServices;

namespace CellId
{
    public class RIL
    {
        // string used to store the CellID string
        private static string celltowerinfo = "";

        /*
         * Uses RIL to get CellID from the phone.
         */
        public static string GetCellTowerInfo()
        {
            // initialise handles
            IntPtr hRil = IntPtr.Zero;
            IntPtr hRes = IntPtr.Zero;

            // initialise result
            celltowerinfo = "";

            // initialise RIL
            hRes = RIL_Initialize(1,                                        // RIL port 1
                                  new RILRESULTCALLBACK(rilResultCallback), // function to call with result
                                  null,                                     // function to call with notify
                                  0,                                        // classes of notification to enable
                                  0,                                        // RIL parameters
                                  out hRil);                                // RIL handle returned

            if (hRes != IntPtr.Zero)
            {
                return "Failed to initialize RIL";
            }

            // initialised successfully

            // use RIL to get cell tower info with the RIL handle just created
            hRes = RIL_GetCellTowerInfo(hRil);

            // wait for cell tower info to be returned
            waithandle.WaitOne();

            // finished - release the RIL handle
            RIL_Deinitialize(hRil);

            // return the result from GetCellTowerInfo
            return celltowerinfo;
        }

        // event used to notify user function that a response has
        //  been received from RIL
        private static AutoResetEvent waithandle = new AutoResetEvent(false);

        public static void rilResultCallback(uint dwCode,
                                             IntPtr hrCmdID,
                                             IntPtr lpData,
                                             uint cbData,
                                             uint dwParam)
        {
            // create empty structure to store cell tower info in
            RILCELLTOWERINFO rilCellTowerInfo = new RILCELLTOWERINFO();

            // copy result returned from RIL into structure
            Marshal.PtrToStructure(lpData, rilCellTowerInfo);

            // get the bits out of the RIL cell tower response that we want
            celltowerinfo = rilCellTowerInfo.dwCellID + "-" +
                            rilCellTowerInfo.dwLocationAreaCode + "-" +
                            rilCellTowerInfo.dwMobileCountryCode;

            // notify caller function that we have a result
            waithandle.Set();
        }

        // -------------------------------------------------------------------
        //  RIL function definitions
        // -------------------------------------------------------------------

        /*
         * Function definition converted from the definition
         *  RILRESULTCALLBACK from MSDN:
         *
         * http://msdn2.microsoft.com/en-us/library/aa920069.aspx
         */
        public delegate void RILRESULTCALLBACK(uint dwCode,
                                               IntPtr hrCmdID,
                                               IntPtr lpData,
                                               uint cbData,
                                               uint dwParam);

        /*
         * Function definition converted from the definition
         *  RILNOTIFYCALLBACK from MSDN:
         *
         * http://msdn2.microsoft.com/en-us/library/aa922465.aspx
         */
        public delegate void RILNOTIFYCALLBACK(uint dwCode,
                                               IntPtr lpData,
                                               uint cbData,
                                               uint dwParam);

        /*
         * Class definition converted from the struct definition
         *  RILCELLTOWERINFO from MSDN:
         *
         * http://msdn2.microsoft.com/en-us/library/aa921533.aspx
         */
        public class RILCELLTOWERINFO
        {
            public uint cbSize;
            public uint dwParams;
            public uint dwMobileCountryCode;
            public uint dwMobileNetworkCode;
            public uint dwLocationAreaCode;
            public uint dwCellID;
            public uint dwBaseStationID;
            public uint dwBroadcastControlChannel;
            public uint dwRxLevel;
            public uint dwRxLevelFull;
            public uint dwRxLevelSub;
            public uint dwRxQuality;
            public uint dwRxQualityFull;
            public uint dwRxQualitySub;
            public uint dwIdleTimeSlot;
            public uint dwTimingAdvance;
            public uint dwGPRSCellID;
            public uint dwGPRSBaseStationID;
            public uint dwNumBCCH;
        }

        // -------------------------------------------------------------------
        //  RIL DLL functions
        // -------------------------------------------------------------------

        /* Definition from: http://msdn2.microsoft.com/en-us/library/aa919106.aspx */
        [DllImport("ril.dll")]
        private static extern IntPtr RIL_Initialize(uint dwIndex,
                                                    RILRESULTCALLBACK pfnResult,
                                                    RILNOTIFYCALLBACK pfnNotify,
                                                    uint dwNotificationClasses,
                                                    uint dwParam,
                                                    out IntPtr lphRil);

        /* Definition from: http://msdn2.microsoft.com/en-us/library/aa923065.aspx */
        [DllImport("ril.dll")]
        private static extern IntPtr RIL_GetCellTowerInfo(IntPtr hRil);

        /* Definition from: http://msdn2.microsoft.com/en-us/library/aa919624.aspx */
        [DllImport("ril.dll")]
        private static extern IntPtr RIL_Deinitialize(IntPtr hRil);
    }
}

-

When you ‘ll call the function GetCellTowerInfo() function to retrieve the cell information. You ‘ll get the output string in this format

Cell Id – Location Area Code – Mobile Country Code

e.g  17444 – 5414 – 512 – 423

After getting this, you ‘ll have to pass these parameters either to Fire Eagle Service of Yahoo or to Google Gears API. I ‘ll (inshallah) write more articles on

• Problems with RIL layer
• Problem in getting Mobile Country Code and Mobile Network Code
• Usage of  Fire Eagle
• Usage of Google Service

Reference Link

• MSDN

Helping Links

• Getting latitude and longitude without a GPS (Windows Mobile) on stakeoverflow.com
• How to implement Google maps on Windows Mobile on socail.msdn.microsoft.com
• Retrieving Cell ID, MNC, MCC, LAC, IMEI, IMSI in Windows Mobile on socail.msdn.microsoft.com
• How to get the location/cell information of the device? on socail.msdn.microsoft.com
• RILCELLTOWERINFO – Structure & Member Reference on msdn.microsoft.com
• Mobile Network Codes on Wikipedia.com on wikipedia.com
• Programmatically getting the CellID from your Windows Mobile phone on dalelane.co.uk

Related posts:

1. Debugging issue on windows mobile smart device development: the breakpoint will not currently be hit, the specific module has not been loaded

Another Response to Ban on Facebook in Pakistan

Freedom of Speech should be given to every one. Right and no one should ignore it but one must need to know the difference between freedom of speech and freedom to insult. I have no right to insult your wife or mother by using the tool of freedom hence I am even violating human rights here.

The question is, is there any thing like Absolute Freedom in this world? Let’s be clear, there is no such thing like absolute freedom in this world. Even if you are asked to live in a remote island when no one else is lived and no law seems to bind you, you re still not free since your living style will be Dependant on your surrounding,weather and stuff you would need to survive. At that time you will even have to think and drink things which you usually abhor. According to Islamic point of view we are entirely dependant on Allah(SWT). Every living has to taste death. That’s what Quran tells us plus if there was the concept of absolute freedom then there would not be a concept of living in societies and colonies. Man is a social Animal, the saying of Aristotle teaches us that a person needs to take care and consider the feelings of others as well otherwise society will fall apart and there would be a big chaos.
(From: kadnan.com)

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Holocaust denial is illegal in a number of European countries. Many countries also have broader laws that criminalize genocide denial. In addition, the European Union has issued a directive to combat racism and xenophobia, which makes provision for member states criminalising Holocaust denial, with a maximum prison sentence of between one and three years. Also, the Council of Europe’s 2003 Additional Protocol to the Convention on Cyber Crime, concerning the prosecution of acts of a racist and xenophobic nature committed through computer systems includes an article entitled Denial, gross minimisation, approval or justification of genocide or crimes against humanity, although this does not have the status of law. Of the countries that ban Holocaust denial, a number (Austria, Germany, Hungary, and Romania) were among the perpetrators of the Holocaust, and many of these also ban other elements associated with Nazism, such as Nazi symbols.
(From: Wikipedia)

Point of View By One Pakistani : Who has been effected by this Law in 2010?

Oriya Jan Maqbool; A Cloumnist in Express News

Jab Tak Waisaa Qanoon Nahin AA Jata - 22nd May,2010

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While development on windows mobile i faced the problem that whenever i tried to debug my code, my breakpoints converted into a hollow circle and started giving me the error “the breakpoint will not currently be hit, the specific module has not been loaded” . When i searched on it , i found different solutions.

Visual Studio Debug Point Screen Shot- nDoubleOr.com

Solution 1 :

Make sure your project is running under debug mode.

Solution 2:

1) Delete all the files from Bin folder (debug , release upto which mode you are using)

2) Un-install CE Frame work and install and try again

Solution 3:

First of all check which version of .Net Compact Frame work is installed on your machine. How would you check this?  I found another article on this  “How to check .Net Framework Installed”

Lastly i downloaded &  upgraded the dot net compact frame work 2.0 with service pack 1 patch. You can download it from here :  http://www.microsoft.com/downloads/details.aspx?FamilyID=7befd787-9b5e-40c6-8d10-d3a43e5856b2&DisplayLang=en

You can download and install service pack 2 from depending upon your requirement from here: http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=aea55f2f-07b5-4a8c-8a44-b4e1b196d5c0

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STEP 1: Open SQL Server 2005 through SQL Server Management Studio Express.

STEP 2: Right Click on the database to which you want to connect.

SQL Server Database Properties Screen Shoot - nDoubleOr.com

STEP 3: A properties pop up will open. Click on permissions on left hand side.

SQL Server Database Properties Popup Screen Shot- nDoubleOr.com

STEP 4: On the right hand side below the database name you will see the while box users or roles.  If there is no item inside this box click ‘Add’ button. A pop up will appear as shown below. Click ‘Browse’ button.

SQL Server Database Select User OR Roles Popup Screen Shot- nDoubleOr.com

STEP 5: ‘Browse for Objects’ pop up window will appear and you will see ‘guest’ and ‘public’ in the list with check boxes.

SQL Server Database Browse for Objects Screen Shot- nDoubleOr.com

STEP 6: Select the ‘guest’  and click ‘OK’.

STEP 7: ‘Guest’ will be appeared in the list  & permission list will be appeared on the screen.

SQL Server Database Properties Popup 2 Screen Shot- nDoubleOr.com

as shown below.

STEP 8: You ‘ll see columns of ‘Permission’, ‘Granter’, ‘Grant’,  ’With Grant’ and deny.  Scroll the list and select the ‘Grant’ check boxes against permissions.  Usually Connect, Execute, Update, Insert, Delete, Create View permission are given to the object but you can define anything as you wish.

Is this post helpful for you or any suggestions ? Your comments will be highly appreciated.

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At last! i have uploaded a site. mmmm. It took me a long time to search for theme. Today i had decided that i would work on Android app but all gone vain because when i started work at that time i was unable to concentrate. Then i started facebooking & searching different funny videos on you tube. Then an idea came into my mind that why i should not upload the pending site on server. At least something should be there on site. Then i started uploading files.

While writing this post i practiced badminton. Now i am feeling tired but i would say that i am very happy with my new blog setup. I will try to make my blog more interesting but how? This question is continuously circling in my mind. I am thinking to start studying regularly the feed of problogger.net & other tips for better SEO and Google ranking.

Other than this at this time i have made only two categories. I hope to increase the categories but what should be the name of categories ? This is a confusing question till now. hmmm

What should be in the “About us” page this is another interesting & challenging question. For this i have seen the profiles of different designers from smashingmagazine.com .

By the way i am regular reader of smashingmagazine.com. The way they are running the site is really great. One can find many tips & tricks, themes & other pictures, wallpapers & different tutorials on design, photography & blah..blah..blah. Especially, i like the calendar wallpaper of every month. Due to this i am very famous among my friends & colleagues for changing wallpaper every month or even many times in a month. Like at this time i have  The Recession is Over wallpaper on my home PC & Lettering wallpaper on my office PC.  With all this smashing magazine also covers topics of jquery, flash,  php, ruby one rails, technology, magazines & lot more.  Sorry! you caught me wrong, I am just a fan of smashingmagazine.com.

At this time i have seen the About Us page of Eva-lotta, Sam Brown, Chris Spooner, Mohit etc etc. But problem is that these all are designer. I think i should search for some developer or software engineer site. Ohhhh! i m just searching for the sake of inspiration. rite!

After that my next mile stone will be design of Protfolio. This is a little bit tricky. Through smashingmagazine.com i have seen portfolios but those are also of designers. Secondly, wordpress haven’t any good & customizable plugin for protfolio. So it seems that it would be a separate page of protfolio in my case.  I am not a good graphic designer so it seems bit lengthy to design the portfolio with style.

Now i am thinking that i should finish writing this post. I hope that i would keep alive this blog. Let’s hope for the best. But in the end i would thank to Zeeshan Hasan for providing me the space on server & for stimulating me to starting my own blog. Thanks zeeshan bhai.

Have a good day. Bye!

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