OnDraw() in a View - Mobile Discussion Boards

bensoncd14-Feb-04 2:17

14-Feb-04 2:17

Thank you for you reply. Well, to me it appears that CrossFire may be having jobs for VB.NET programmers in the very near future. Working as a programmer in Mobile phone platforms. Is that so?

Debugging only works if connected to Network

camasmartin4-Feb-04 7:46

camasmartin

4-Feb-04 7:46

This is really strange. I am using Vis. Studio, compact framework, and C#. When I am connected to my network, the emulator comes up, the program starts and Vis studio goes into debug mode, stopping at appropriate break points.

If I disconnect my network (Home LAN), the emulator pops up, the program is loaded, and Vis Studio does not go into debug mode. I can go to the emulator and start the program (by opening file explorer and working my way to the appropriate program file). Confused | :confused:

I have no idea where to begin looking. Any suggestions???

Thank you
Martin.

camasmartin
hobby programmer

Re: Debugging only works if connected to Network

João Paulo Figueira4-Feb-04 22:08

João Paulo Figueira

4-Feb-04 22:08

Try installing the Microsoft Loopback Adapter. This way you wil always have an active TCP/IP connection, even if you unplug the network cable.

Regards,
João Paulo

Re: Debugging only works if connected to Network

camasmartin16-Feb-04 9:21

camasmartin

16-Feb-04 9:21

THANK YOU. IT WORKED.

I'd still like to figure out what is really happening, but it did work. It took me a while to (1) read your suggestion, (2) unsuccessfully find a loopback adapter, (3) find instructions on the web for making one (Simple!!), and testing it.

Thanks again. I just went on a trip and was able to work detached.

camasmartin
hobby programmer

java in embedded world

Anonymous4-Feb-04 4:13

Anonymous

4-Feb-04 4:13

I would like to know the java VM for Microcontrollers ?

regards,
karthik bala guru

Smile | :)

Removing links from the start menu

KellyR3-Feb-04 7:57

KellyR

3-Feb-04 7:57

I asked a number of weeks ago about a way to remove links from the start menu in Windows CE. The response was:

enumerate the .lnk files in \windows\start menu with findfirst/findnext and then move the ones you dont want there to \windows\start menu\programs

Which seems helpful, but I don't know how to go about doing this using InstallScript. Could someone give me an example of how to do this using InstallScript? Also any other method would be appreciated.

Thanks!

Kelly Ryan

ConnectionManager from .NET Compact Framework

Jonkr3-Feb-04 1:35

Jonkr

3-Feb-04 1:35

I am working on an application for the Intermec 740 (PocketPC 2002), written in C# under .NET Compact Framework. I want to establish a GPRS connection to the internet via a bluetooth mobilephone using "ConnectionManager".

I need to make a call to "ConnectionManager" in the dll "cellcore.dll", i.e. a call to unmanaged code which need marshaling of the data structures.

I have included the code below.

When I run the code, I loose the connection to the Intermec completely, so it is pretty difficult for me to debug this code.
But I think the problem is around the marshaling of the data structures used as parameters to the functions in "cellcore.dll".

Have anyone successfully used the ConnectionManager from .NET Compact Framework (C#) ?

Does anyone have ideas how to proceed from here, e.g. experience with calls to unmanaged code and marshaling of structs from C# ?

using System;using System.Collections;<br />
using System.Runtime.InteropServices;<br />
<br />
namespace Mobile.ConnectionManager<br />
{<br />
	public class ConnMgr<br />
	{<br />
		private const int CONNMGR_PARAM_GUIDDESTNET        = 0x1;<br />
		private const int CONNMGR_PARAM_MAXCOST            = 0x2;<br />
		private const int CONNMGR_PARAM_MINRCVBW           = 0x4;<br />
		private const int CONNMGR_PARAM_MAXCONNLATENCY     = 0x8;<br />
<br />
		private const int CONNMGR_PRIORITY_USERINTERACTIVE = 0x08000;<br />
		<br />
		//typedef struct _CONNMGR_DESTINATION_INFO <br />
		//	{<br />
		//	  GUID guid;<br />
		//	  TCHAR szDescription[CONNMGR_MAX_DESC];<br />
		//	} CONNMGR_DESTINATION_INFO;<br />
<br />
		public unsafe class CONNMGR_DESTINATION_INFO<br />
		{<br />
			public Guid   guid          = Guid.Empty;<br />
			public char*  szDescription = null;<br />
		}<br />
<br />
		//typedef struct _CONNMGR_CONNECTIONINFO <br />
		//		{<br />
		//			DWORD cbSize;<br />
		//			DWORD dwParams;<br />
		//			DWORD dwFlags;<br />
		//			DWORD dwPriority;<br />
		//			BOOL bExclusive;<br />
		//			BOOL bDisabled;<br />
		//			GUID guidDestNet;<br />
		//			HWND hWnd;<br />
		//			UINT uMsg;<br />
		//			LPARAM lParam;<br />
		//			ULONG ulMaxCost;<br />
		//			ULONG ulMinRcvBw;<br />
		//			ULONG ulMaxConnLatency;<br />
		//		} CONNMGR_CONNECTIONINFO;<br />
<br />
		public unsafe class CONNMGR_CONNECTIONINFO<br />
		{<br />
			public int    cbSize;<br />
			public int    dwParams;<br />
			public int    dwFlags;<br />
			public int    dwPriority;<br />
			public bool   bExclusive;<br />
			public bool   bDisabled;<br />
			public Guid   guidDestNet;<br />
			public IntPtr hWnd;<br />
			public int    uMsg;<br />
			public int    lParam;<br />
			public int    ulMaxCost;<br />
			public int    ulMinRcvBw;<br />
			public int    ulMaxConnLatency;<br />
		}<br />
<br />
		[DllImport("cellcore.dll", SetLastError=true)]<br />
		private unsafe static extern int ConnMgrEnumDestinations(<br />
			int                      nIndex,<br />
			CONNMGR_DESTINATION_INFO destinationInfo<br />
			);<br />
<br />
		[DllImport("cellcore.dll", SetLastError=true)]<br />
		private unsafe static extern IntPtr ConnMgrEstablishConnection(<br />
			CONNMGR_CONNECTIONINFO pConnInfo<br />
			);<br />
<br />
		public ConnMgr()<br />
		{<br />
		}<br />
<br />
		public static unsafe bool EnumDestinations(int nIndex, out Guid guid, out string description, out int error)<br />
		{<br />
			int result;<br />
<br />
			CONNMGR_DESTINATION_INFO connMgrDestinationInfo = new CONNMGR_DESTINATION_INFO();<br />
<br />
			fixed (char* pDescription = new char[129])<br />
			{<br />
				connMgrDestinationInfo.guid          = Guid.Empty;<br />
				connMgrDestinationInfo.szDescription = pDescription;<br />
<br />
				result = ConnMgrEnumDestinations(nIndex, connMgrDestinationInfo);<br />
<br />
				error  = Marshal.GetLastWin32Error();<br />
<br />
				if (result == 0)<br />
				{<br />
					guid        = new Guid(connMgrDestinationInfo.guid.ToString());<br />
					description = new string(pDescription);<br />
				}<br />
				else<br />
				{<br />
					guid        = Guid.Empty;<br />
					description = "";<br />
				}<br />
			}<br />
<br />
			return (result == 0) ? true : false;<br />
		}<br />
<br />
		public static unsafe IntPtr EstablishConnection (Guid guid)<br />
		{<br />
			CONNMGR_CONNECTIONINFO connectionInfo = new CONNMGR_CONNECTIONINFO();<br />
			<br />
			connectionInfo.cbSize           = Marshal.SizeOf(connectionInfo);<br />
			connectionInfo.dwParams         = CONNMGR_PARAM_GUIDDESTNET;<br />
			connectionInfo.dwFlags          = 0;<br />
			connectionInfo.dwPriority       = CONNMGR_PRIORITY_USERINTERACTIVE;<br />
			connectionInfo.bExclusive       = false;<br />
			connectionInfo.bDisabled        = false;<br />
			connectionInfo.guidDestNet      = guid;<br />
			connectionInfo.hWnd             = IntPtr.Zero;<br />
			connectionInfo.uMsg             = 0;<br />
			connectionInfo.lParam           = 0;<br />
			connectionInfo.ulMaxCost        = 0;<br />
			connectionInfo.ulMinRcvBw       = 0;<br />
			connectionInfo.ulMaxConnLatency = 0;<br />
<br />
			return ConnMgrEstablishConnection(connectionInfo); // At this point I loose the connection to the Intermec<br />
		}<br />
	}<br />
}

Test function:

		private void button1_Click(object sender, System.EventArgs e)<br />
		{<br />
			int    nIndex      = 0;<br />
			Guid   guid        = new Guid();<br />
			string description = "";<br />
			int    error       = 0;<br />
			bool   result      = true;<br />
<br />
			textBox1.Text = "";<br />
<br />
			while (result == true)<br />
			{<br />
				result = ConnMgr.EnumDestinations(nIndex, out guid, out description, out error);<br />
<br />
				textBox1.Text += "Win32Error = " + string.Format("{0:X}", error) + "\r\n" +<br />
					guid.ToString() + "\r\n" +<br />
					description + "\r\n";<br />
<br />
				if ((result == true) && (nIndex == 4))<br />
				{<br />
					// This is the internet connection<br />
					ConnMgr.EstablishConnection(guid);<br />
				}<br />
<br />
				nIndex++;<br />
			}<br />
		}

OnDraw() in a View

cberam3-Feb-04 1:10

cberam

3-Feb-04 1:10

Hi,

1) In my MFC application,i have implemented OnDraw() function to display controls in a view.But i see that OnDraw() function is called manytimes by default.Is this s bug in MFC?.

How to avoid OnDraw()?

2)When i avoid OnDraw(),when i try to manually load and unload accelarator(soft keyboard in PPC) the view is not redrawn.The view moves up.

Pls help..

I really apprecite the help?...

Thnks in advance
Ram

Tooltips on added MFC toolbars (PPC2003)

LunaticFringe2-Feb-04 17:01

LunaticFringe

2-Feb-04 17:01

As the subject line indicates, I'm having problems implementing tooltips on toolbars other than the one default bar in an eVC4 MFC app for the PPC2003. I've tried every means I can think of, from raw TB_SETTOOLTIPS messages to resource string table strings. Nothing seems to work - instead of a tooltip, I get the tap-and-hold animation. Oddly, it does work in WTL, with no trouble.

Does anyone have a solution, or know of a documented bug that would explain this (mis)behavior?

Thanks for your time.

Big Grin | :-D

Re: Tooltips on added MFC toolbars (PPC2003)

João Paulo Figueira2-Feb-04 22:52

João Paulo Figueira

2-Feb-04 22:52

To disable the tap-and-hold animation, handle the WM_LBUTTONDOWN message this way:

void CMyToolbar::OnLButtonDown(UINT nFlags, CPoint point)
{
    Default();
}

This will allow your toolbar to handle stylus taps without running the flawed logic of MFC's default handler.

Regards,
João Paulo

Re: Tooltips on added MFC toolbars (PPC2003)

LunaticFringe3-Feb-04 7:24

LunaticFringe

3-Feb-04 7:24

Works like a champ.

You da man, João.

Big Grin | :-D

run same program on PPC3.0 and PPC4.2

slomoman2-Feb-04 3:19

slomoman

2-Feb-04 3:19

I developed a small app for my PDA with EVC++3. It runs perfectly on my PocketPC, which runs on PPC 3.0 (that what "info" says, it is usually called PocketPC 2002, right?).
Now i wonder if I can run this programm on another PDA that runs on PPC 4.2 (that's called PocketPC 2003, right?).
Is that possible??

I copied the .exe on the PPC03 and i could even start it. however, my app reads pictures from files and those were not shown on PPC03 while there were no problems on PPC02.
Then I wanted to change some code and let EVC++ copy the programm on the PPC02. This wasn't possible (Platform Manager problems).
Would this be possible at all?

thx, Daniel

Re: run same program on PPC3.0 and PPC4.2

João Paulo Figueira2-Feb-04 5:17

João Paulo Figueira

2-Feb-04 5:17

The answer to the first question is yes: you can run on a Pocket PC 2003 application that were developed for the Pocket PC 2002.

As for the second question, everything should be working correctly, unless you are using an API that behaves differently (!?!?). How are you loading the images?

Regards,
João Paulo

Re: run same program on PPC3.0 and PPC4.2

slomoman2-Feb-04 6:10

slomoman

2-Feb-04 6:10

I AM using some APIs and Libs and those are probably the reason, but I have no idea what to do.

I read html-files and jpg-files and display HTML on the screen.
I use
- ReadFile() to read the html-file,
- VOImage to read the jpg-files (http://www.pocketpcdn.com/libraries/voimage.html / http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnppc2k/html/ppc_viewer.asp ), and
- CSTHtmlDialog to show the HTML (http://www.codeproject.com/ce/sthtmldialog.asp).

Do I need to copy or register anything on the PPC Device? For PPC02 I always used EVC to upload my app to the device, but on PPC03 I had to copy the .exe manually. Is that the problem?
(By the way: If I copy the exe out of ARMDbg instead of ARMRel, my app won't even start on the device).

What is also strange: If I start the app and a HTML-page with some images is shown, the images are shown for about 0.1 secs and then they are replaced by the typical red [x] symbol.
??

thx, Daniel

Adding method via Classwizard

misha_grewal31-Jan-04 19:18

misha_grewal

31-Jan-04 19:18

I added WM_CLOSE handler via class wizard in CMainFrame. It deleted other two afx_msg handlers from mainframe.h
Although I pasted the two handlers declarations again, just wondering what is the reason behind this...
Any ideas?

Re: Adding method via Classwizard

João Paulo Figueira1-Feb-04 22:57

João Paulo Figueira

1-Feb-04 22:57

What handlers did it delete?

Regards,
João Paulo

Problem with CFormView in Doc/View-Application (eVC4/MFC)

Ralf Limbacher30-Jan-04 6:30

Ralf Limbacher

30-Jan-04 6:30

Hi,

I have a problem with the AppWizard-generated code of eVC4 and I have no idea what's wrong with it. Any help is appreciated.

I generate a new application "Test" with the AppWizard:
- Single document with DocList
- Windows Sockets, ActiveX Controls and Shared New disabled
- Basic MenuBar
- Source File Comments enabled
- Statically linked MFC Library
- Base class "CFormView" for my view class "CTestView"

After building the project I run the application. Now I would expect my view to show the contents of the associated dialog ressource (some static content generated by AppWizard like "TODO: Add controls"). But the only thing I get is a white, empty window.

What am I supposed to do?

(You can find the files at http://www.ralf-limbacher.de/eVC4/Test.zip.)

Thanks in advance
Ralf

There is a hard problem about pdb format

lsaturn29-Jan-04 18:41

lsaturn

29-Jan-04 18:41

I just have a XML document which is generated by my ASP script.
Now I want to download it and tranform it to the PDB format.
It must be done absolutely automatic by my ASP script from download to transform.
Now I have a problem,how can I tranform it from the XML format(it is just like a plain txt) to the PDB format.
I'm a freshman in this area.I used to refer to this page
http://www.palmos.com/dev/support/docs/fileformats/front.html
for the information of the PDB format.
All I know is the PDB format have a PDB header and the list of the records' entry.
Please help me,every tips will be appreciated. WTF | :WTF:

Strange problem when writing to a file

Cedric Moonen27-Jan-04 23:37

Cedric Moonen

27-Jan-04 23:37

Hello !

I have a really strange problem:
I write a string to a file:

<br />
FILE* pFile = fopen("profile.tmp","w");<br />
....<br />
...<br />
...<br />
char Buff[256];<br />
sprintf(Buff,"\n[%s]\n",mainkey);<br />
fputs(Buff,newfile);<br />

The instruction fputs fire an exception: "First chance excepetion: access violation" Dead | X|

I checked the string, it's perfectly correct and the file handle is valid. I cannot find any solution to this problem !!

Please give me some clues.... Smile | :)

Thanks

Re: Strange problem when writing to a file

João Paulo Figueira28-Jan-04 4:08

João Paulo Figueira

28-Jan-04 4:08

What is the platform?

Regards,
João Paulo

Re: Strange problem when writing to a file

Cedric Moonen28-Jan-04 4:18

Cedric Moonen

28-Jan-04 4:18

Windows CE on pocketPC

Re: Strange problem when writing to a file

João Paulo Figueira28-Jan-04 4:24

João Paulo Figueira

28-Jan-04 4:24

Does the value of mainkey fit into the buffer?

By the way, why are you using ASCII text instead of Unicode?

Regards,
João Paulo

Re: Strange problem when writing to a file

Cedric Moonen28-Jan-04 4:45

Cedric Moonen

28-Jan-04 4:45

Yes everything is correct.

I use ASCII instead of unicode because it has to be compatible with my library that has been developped for the desktop computer. I cannot write everything again.

But the bug is solvedf but I don't have an explanation. I was using _wfopen instead of fopen (with TCHAR string). So I changed it and now that works Confused | :confused:

Symbian / Series 60 development

Antti Keskinen27-Jan-04 8:15

Antti Keskinen

27-Jan-04 8:15

Hello !

Has anyone here yet ventured into the world of Symbian or Series 60 development ? What tools do you use ? As far as I know, the Series 60 SDK and it's tools are a piece of crap: a bunch of script-driven gcc-tools.

I've heard about the Borland Mobile Studio but it doesn't seem to be available for purchase yet.. Is it even released yet ?

Any other options you would recommend ? I do have the Visual Studio solution already with the script-driven tools, but like I said, they are an abomination to application development: even a crude Unix hack looks smoother than this package.. Smile | :)

-Antti Keskinen

----------------------------------------------
The definition of impossible is strictly dependant
on what we think is possible.

Re: Symbian / Series 60 development

João Paulo Figueira27-Jan-04 10:25

João Paulo Figueira

27-Jan-04 10:25

Antti Keskinen wrote:
Has anyone here yet ventured into the world of Symbian or Series 60 development ?

Yes!

Antti Keskinen wrote:
What tools do you use ?

The Visual Studio 6 setup.

Antti Keskinen wrote:
As far as I know, the Series 60 SDK and it's tools are a piece of crap: a bunch of script-driven gcc-tools.

They look worse when you start using them. After a while... Well, integration is not their forte...

The tools are a bit crude, as you say. But if you look under the covers you will find some gems thet will make your life less miserable. Anyway, it's a sizeable learning curve...

Good luck!

Regards,
João Paulo

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