Mobile Discussion Boards

Pamela198410-Jul-07 23:47

Pamela1984

10-Jul-07 23:47

Hi Guys and Girls,

I am having trouble writing my first mobile application with Compact Framework.
Can anyone give me some sample code for a small application so that I can see how it works and familarise myself with the program.

Many thanks,

Pamela

Re: Mobile development

Sathesh Sakthivel11-Jul-07 0:25

Sathesh Sakthivel

11-Jul-07 0:25

Mobile Application with Compact Framework[^]

Mobile Application with Compact Framework[^]

Hope this links will help you in your application.

Regards,

Satips. Rose | [Rose]

Don't walk in front of me, I may not follow;
Don't walk behind me, I may not lead;
Walk beside me, and just be my friend. - Albert Camus

Re: Mobile development

Pamela198412-Jul-07 21:13

Pamela1984

12-Jul-07 21:13

Thanks Satips,

Can you give a sample code on how to send information to a PDA from a SQL server and vice versa so that I can see how it works?

Pamela Smile | :)

Re: Mobile development

Sathesh Sakthivel13-Jul-07 18:29

Sathesh Sakthivel

13-Jul-07 18:29

In the Link there are lot of Sample codes related to that. If you have gone through the Link fully means you could not asked this code.

Regards,

Satips. Rose | [Rose]

Don't walk in front of me, I may not follow;
Don't walk behind me, I may not lead;
Walk beside me, and just be my friend. - Albert Camus

reading problem from serial port(use serialport class)

supercsharp110-Jul-07 22:05

supercsharp1

10-Jul-07 22:05

in my C# program(I mainliy use SerialPort class),I input "at" in a textBox,then the program send "at" to serial port(the other end of serial port is a modem which is connected to my computer by a data line),but when i click receive button,the message I receive from serial port is the same as what I input,namely "at",not "ok",why?who can answer my question?How I solve this problem and get the right response "ok" from serial port?

next is my code:

public partial class Form1 : Form
{
private SerialPort sp = null;
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
try
{
sp = new SerialPort("COM1");
sp.ReadTimeout = 5000;
sp.Open();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}

private void button2_Click(object sender, EventArgs e)
{
try
{
sp.Write(textBox1.Text);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}

private void button3_Click(object sender, EventArgs e)
{
try
{
/*string text=null;
char[] buffer = new char[10];
sp.Read(buffer,0,6);
for (int i = 0; i < buffer.Length; i++)
{
text += buffer[i];
}
textBox2.Text = text;*/

/*string text = null;
char t = (char)sp.ReadChar();
text+=t.ToString();
while (true)
{
t = (char)sp.ReadChar();
if (t == '\0') break;
else text += t.ToString();
}
textBox2.Text = text;*/

string text = null;
byte[] t = new byte[20];
char[] c = new char[20];
sp.Read(t, 0, t.Length);
sp.Read(t, 0, t.Length);
c = Encoding.ASCII.GetChars(t);
int i;
for (i = 0; i < c.Length; i++)
{
if (c[i] == 'O' || c[i] == 'K')
text += c[i].ToString();
}
textBox2.Text = text;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}

Re: reading problem from serial port(use serialport class)

ghle20-Aug-07 5:48

ghle

20-Aug-07 5:48

This may have nothing to do with your code.

Modems have an Echo mode, returning exactly what you send to them. This sounds like your problem.

Configure the modem to turn echo mode off, "ATE0" if I recall correctly, in the modem initialization. Of course, the "ATE0" may be returned/echoed the first time, but then everything should operate as expected.

You may want to save the configuration after you have done this.

Gary

Problem of SmsOpen for reading an SMS

jidtrawadee9-Jul-07 20:34

jidtrawadee

9-Jul-07 20:34

I am coding a messaging program on Windows Mobiles 6.0, but there is a problem in reading SMS. My codes of SmsOpen(…) are

SMS_ADDRESS smsaDestination;
TEXT_PROVIDER_SPECIFIC_DATA tpsd;
SMS_HANDLE smshHandle;

HANDLE hRead = CreateEvent (NULL, FALSE, FALSE, NULL);
// Open an SMS Handle
HRESULT hr = SmsOpen (SMS_MSGTYPE_TEXT, SMS_MODE_RECEIVE, &smshHandle, &hRead);
if (hr != ERROR_SUCCESS) {
printf ("SmsOpen fail %x %d\r\n", hr, GetLastError());
return 0;
}

.
.
.

However there is an error when calling
SmsOpen(SMS_MSGTYPE_TEXT,SMS_MODE_RECEIVE, &smsHandle, &hRead).
The error message is “Another application already has the SMS system open.” And there is not error if I use SMS_MODE_SEND.
I had already searched in many books and website, but I found only code that I used. Are there anyone know how to solve this problem?

Thank you.
Jidtrawadee Cheewatanon
jidtrawadee@hotmail.com
(Thailand)

SHLoadImageFile Error [modified]

Nicholas Kubiak9-Jul-07 7:45

Nicholas Kubiak

9-Jul-07 7:45

Currently I am making a program that can open several images(bmp,jpg) and run them in a slideshow for my treo 700w (Windows Mobile 5.0 Pocket PC). I use SHLoadImageFile to open the images. I have no problems opening as many images as I went when I run them on the treo emulator that I run from VS. But when I try to run it on my phone, it only allows to open three images then just stops letting me load anything else after I try to load the 4th image. I have tried a lot of different things to figure this out but its really hard to debug something that works fine on your computer like that. Here is what I am trying. GetOpenFileName doesn't return an error. SHLoadImageFile doesn't return an error but it doesn't display the Error message box either. I tried inserting message boxes in several places so I could get an idea of where it stops and it stops when it tries temp = SHLoadImageFile line then nothing executes below it. I don't know if there is a limited number of times you can call that function but any help would be very much appreciated.

if (GetOpenFileName(&ofn))<br />
{  <br />
	//Loads file into an array.<br />
	HBITMAP temp;<br />
	if((temp = SHLoadImageFile(ofn.lpstrFile))!=NULL)   //Only gets to here after 3rd image<br />
	{<br />
		g_hBitmap[count] = temp;<br />
		MessageBox(NULL, ofn.lpstrFile, TEXT("File Loaded Successfully"), MB_OK);<br />
		if(count > 0){ index=count;}<br />
		count++;<br />
	}<br />
	else<br />
	{<br />
		MessageBox(NULL, TEXT("Image Unable to Load"), TEXT("ERROR"), MB_OK);<br />
	}<br />
}<br />
else <br />
{<br />
	DWORD dw = GetLastError();<br />
	if (dw == ERROR_OUTOFMEMORY) <br />
	{<br />
		MessageBox(NULL, TEXT("Out of Memory"), TEXT("ERROR"), MB_OK);<br />
	}<br />
	else<br />
	{<br />
		MessageBox(NULL, TEXT("File Unable to Load"), TEXT("ERROR"), MB_OK);<br />
	}<br />
}

Draw on whole screen

kimlung6-Jul-07 9:07

kimlung

6-Jul-07 9:07

I would like to development an application that can draw on whole screen, just like "transcriber". Could you mind to tell how can I implement and what kind of API (DirectDraw, GAPI, GDI....) I need to study?

Milllion Thanks

WindowsCE hard buttons on devices

martin_hughes6-Jul-07 4:09

martin_hughes

6-Jul-07 4:09

Hi all,

I'm testing several "ruggedized" PDA type mobile computers from different manufacturers. Each of these devices have "hard buttons" on the surface of the device itself, but not a full keyboard. Annoyingly each manufacturer has a different API to enable the control of these buttons...

...given that my application may well have to run on all of these devices, does anyone know if these manufacturer API's are just wrapping some Windows calls, and if so, what those calls are?

About activesync sample stockpor?

Syouki_kou5-Jul-07 20:23

Syouki_kou

5-Jul-07 20:23

I am confused with the sample StockPro, i just want to know the working flow of activesync desktop provider and its device side.
After install WM5 for PPC sdk(using vs2005 for development), the sample is under the folder
C:\Program Files\Windows CE Tools\wce500\Windows Mobile 5.0 Pocket PC SDK\Activesync\Activesync stock portfolio sample\Stockpor.
I do it follow the readme.doc, but no new item found in the activesync items list.
there are what i did:
1. using vs2005 compile the sample, we got devsetup.exe,devapp.exe,devsync.dll
and stockapp.exe, stsync.dll. I copied "devsetup.exe,devapp.exe,devsync.dll" to "\" after start PPC emulator successfully. and run devsetup, it is ok.
2. Disconnect emulator from "device emulator manager", the connect is again. The activesync will auto synch the objects it found. but there is no "stock" item in item list appeared in activesync status bar.
3. Run stockpor.exe on desktop PC, and choose the default data file "demo.por"
,then click synch button, ok the activesync is synching, but again with no new item show on the status bar.
Are there some fault operations in my condition?Why couldn't i see the new object "stock"! who can simply tell me how to use this sample, all above is just "my understanding"! thanks!

One day a pretty girl asked me:"Do u think you are handsome?" "I don't think so!".She gave a slap in my face:"Why lying?"...

barcode/laser scanner emulator?

itsKnuckles5-Jul-07 10:58

itsKnuckles

5-Jul-07 10:58

Hello,

I have an issue with a pocket PC emulator (Microsoft Device Emulator V2 (2003)) and I need some help. I have a Pocket PC emulator here and I'm trying to make a software of my company work on it. (To make it quick, its a soft that allows us to manage our store's inventory) That software requires a barecode scanner in order to work. On the emulator, there's no, apparent, way to emulate such a device so I was wondering if there was a way to emulate a barecode scanner on the pocket PC. (Note: We don't want to use that scanner; data input will be made manualy. What we need is a way to make the soft belive there's a laser scanner installed on the pocket pc.

Thank you for your help, Cry | :((

Sending xml files to web service

Sheeba S4-Jul-07 23:49

Sheeba S

4-Jul-07 23:49

Hi,

Any one knows any method to send an xml file to a web service from dotnet compact framework?

Thanks and regards,

sheeba

Re: Sending xml files to web service

tuga-x12-Jul-07 1:33

tuga-x

12-Jul-07 1:33

Hi,

I don't think there's a specific method to send a file to a web service on .NET CF, since a Web Service is something you can develop.

You can develop your own Web Service that receives a stream of bytes and writes them down to a file. Once you include a web reference to that Web Service, you can use its' methods. For example:

WebService<br />
 ReceiveFile(bytes[] bytesRead)<br />
<br />
LocalApp<br />
 SendFile()<br />

Where the SendFile() method uses the web service ReceiveFile() method. You would need a Stream to read the local file on SendFile(), and a Stream to write on ReceiveFile().

I hope this makes sense.

Exception Handling and Reflection

Sheeba S4-Jul-07 23:46

Sheeba S

4-Jul-07 23:46

Hi,

I'm working is windows mobile application development and we need to implement exception handling. We tried to implement it with the help oh MS Exception handling Application Block. But some people says it will affect the performance of the system because it uses reflection. Is that true? If yes, can any one suggest any other exception handling technique that does not use reflection?

Thanks and regards,

Sheeba

Upgrade ROM

nhoc_conxauxi3-Jul-07 21:26

nhoc_conxauxi

3-Jul-07 21:26

hello!
I am working with VS2005 but OS installed in my device is Windows CE 4.2.Now I want to upgrade ROM to Win CE 5.0. Help me! Whick link to download ???

Re: Upgrade ROM

martin_hughes6-Jul-07 4:56

martin_hughes

6-Jul-07 4:56

Unless your device manufacturer has an update you can't.

However, as of SP2, CF 2.0 can now be installed on CE4.2 devices.

How to add icon in the taskbar of smartphone windows mobile 5.0

AshimaWalia3-Jul-07 17:30

AshimaWalia

3-Jul-07 17:30

Hello,

I am working in Windows Mobile 5.0 ,Smartphone SDK and not able to figure out how an application can add an icon in the taskbar of a smartphone through code. Kindly suggest.

As we have notifications in the PocketPC, is there anything available for smartphone also?

Thanks

WindowsIdentity in CF 2.0

Talal Sultan3-Jul-07 6:00

Talal Sultan

3-Jul-07 6:00

Hi all,

I was wondering if the WindowsIndentity class was available in Compact Framework 2.0. I have checked and the namespace System.Security.Principal is not there.

My problem is that I would like to retrieve the username (if available) of the user that is logged into an NT domain. I have an equivalent application in normal Windows. In that case, the user can log into an NT domain if he is working via VPN for example or if he logs into the domain directly from a PC connected to the domain. I can then get the username.

Is there a way to do the same thing in Windows Mobile with CF 2.0?

Thanks,
Talal

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
--Rich Cook

Console app

tuga-x3-Jul-07 1:37

tuga-x

3-Jul-07 1:37

Hi all,

I'm writing a console application for WM5 that uninstalls a previous version of my main app, installs the new version, and then restarts the main app.

The problem is, when uninstalling/installing the console app is closed and main app never gets restarted.

How can I prevent the console app from being closed before finishing?

I already used a form app to catch the Closing event and set the Cancel argument to true, with no effect. The form app still got closed down anyway.

--------- CONSOLE APP CODE ---------

Process cabinst = Process.Start(cabfile, string.Empty);<br />
cabinst.WaitForExit();<br />
cabinst.Close();  //this is never called, console app is terminated

Re: Console app

Mike Dimmick3-Jul-07 10:25

Mike Dimmick

3-Jul-07 10:25

Windows Mobile 5's version of the cabinet install system checks for any programs running that are included in the cabinet and shuts them down. If the program doesn't respond to the close message it kills the process.

You'd have to make a copy of the program somewhere else, I think.

Stability. What an interesting concept. -- Chris Maunder

Re: Console app [modified]

tuga-x9-Jul-07 4:07

tuga-x

9-Jul-07 4:07

Mike,

How do I respond to the close message? Do I need to use PInvoke for this?

I actually copied the console app to a different location and started it from there, but it still shutdown.

I'm under the impression that all .NET CF-based applications are shutdown so I started a VC++ console application.

I'm not a C++ man so I'm having a bit of difficulty. However, uninstalling the previous version doesn't seem to shutdown the VC++ console application as it did with the C# one.

--CORRECTION
My first proof of concept seem to work, that is, the VC++ console app looked like it was still running after the uninstall but it was in fcat shutdown. Any help is much appreciated

-- modified at 10:12 Monday 9th July, 2007

Re: Console app

tuga-x12-Jul-07 1:07

tuga-x

12-Jul-07 1:07

Mike,

Thanks a lot. I've finally made it work by simply copying the console app to a different location and renaming it. The WM5 install system does not attempt to close it this way.

Thanks again

automatic Install "sql.wce4.armv4.CAB" wiht Application CAB file

PavanPareta2-Jul-07 23:08

PavanPareta

2-Jul-07 23:08

hello all,

I have a Application which consist with SQL CE.
when i insall the Application CAB file. SQL CE does not insall whit this Cab File.

i want to install it SQL CE CAB file "sql.wce4.armv4.CAB" with Application CAB file.

but how to do this thing ? ? ?

Pavan Pareta

Re: automatic Install "sql.wce4.armv4.CAB" wiht Application CAB file

Mike Dimmick3-Jul-07 10:31

Mike Dimmick

3-Jul-07 10:31

There's no built-in way to do it. I built a program to build self-extracting ZIP files, which automatically unpack any contained CAB files when they're run. Unfortunately this was for my employer, so it's their copyright and I can't share it with you.

We used to just build a CAB file with a setup DLL which would extract any contained CAB files, but Windows Mobile 5.0 no longer supports nested CAB installs (two CAB installs running concurrently).

Stability. What an interesting concept. -- Chris Maunder

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