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Can a windowless dll have a message loop?

9-May-03 12:06

You're right! Sometimes I have the feeling that MFC 3.0 for CE is really a half-baked and, in some points, a poorly implemented library. This kind of things just makes me wonder how fast the MFC team had to adapt the library for CE. Way too fast.

RuchikaDhingra8-May-03 15:08

RuchikaDhingra

8-May-03 15:08

I am running Windows CE.
I want to trigger a function every 30 minutes. I understand that this can be done by using timers. But a timer object needs DispatchMessage() function for TimerProc() to get called.
Is it possible to provide a message loop in a windowless DLL? If yes, where should the message loop be defined?
(I tried providing a message loop in the DLL but the DLL started showing strange behavior. Is it at all possible?)
Windows ce does not support Timer Queues or Waitable timers. Is there any other option?

Any suggestions would be highly appreciated.

Thanks,
Ruchika

Re: Can a windowless dll have a message loop?

João Paulo Figueira8-May-03 22:12

Re: Can a windowless dll have a message loop?

8-May-03 22:12

Another option would be to use a thread. Worker threads do not need a message loop and you can control their timing with equal (if not greater) accuracy. The code would look something like this:

BOOL bLoop = TRUE;

while(bLoop)
{
    Sleep(30*60*1000);    // 30 minutes in milliseconds

    //
    // Do your stuff here. Do not forget to set bLoop to
    // FALSE when you want the loop terminated.
    //
}

Please note that this code might not be the best for battery saving purposes.

RuchikaDhingra9-May-03 6:25

RuchikaDhingra

9-May-03 6:25

Thank you so much for the suggestion.
I am leaning more towards not adding a background thread mainly becz I already have three threads in my module. So, I am thinking of modifying one of the threads that I have to wait for RETRANSMIT_TIME, do the job and again wait.

Ruchika

ActiveSync 3.5 and Compaq IPAQ 3835

nicholas.gionfriddo7-May-03 5:42

nicholas.gionfriddo

7-May-03 5:42

Hi Guys,

Not sure if this is the correct message board for this issue, but here I go anyway:

I'm attempting (unsuccessfully) to Sync my Compaq IPAQ 3835 to my desktop (DELL GX260) at work. After installing ActiveSync 3.5, I am instructed to "Get Connected", ie make a connection from my Pocket PC to my Desktop PC. The problem is that this connection always fails. The PC doesn't recognize my device, so a connection can't be created.

Does anyone have any trouble shooting tips for me?

Any help would be appreciated

Thanks

Nick

João Paulo Figueira7-May-03 11:28

7-May-03 11:28

Missing info:
1-What is your desktop OS and version?
2-What connection method (serial, USB, Bluetooth, IR)?

To try: ActiveSync 3.6 - download it from Microsoft web site.

Good luck!
João Paulo

nicholas.gionfriddo8-May-03 2:21

nicholas.gionfriddo

8-May-03 2:21

OS- NT 4.0

Connection Method- Serial

Sorry about that. Thanks Joao

Nick

João Paulo Figueira8-May-03 3:04

8-May-03 3:04

nicholas.gionfriddo wrote:
Connection Method- Serial

Check if there is another application accessing (or trying to access) the COM port you are using. Check for modem drivers, for example. ActiveSync will not work through the COM port if it is already opened.

Good luck!
João Paulo

nicholas.gionfriddo8-May-03 3:26

nicholas.gionfriddo

8-May-03 3:26

João Paulo Figueira wrote:
application accessing (or trying to access) the COM port

Joao,

I don't have a modem running on this compu. Also, when the connection to the PocketPC fails, a pop-up shows that my port (COM1) is available.

Are there other ways I can check my Port availability?

Thanks for the help

Nick

João Paulo Figueira8-May-03 3:37

8-May-03 3:37

nicholas.gionfriddo wrote:
Are there other ways I can check my Port availability?

Unsure | :~

I'm not sure... NT 4.0 is remote history for me.

Try connecting to COM2. Also check for other software that might be hooked into your COM1 (it can be anything...) Frown | :(

Good luck,
João Paulo

Loading - Serialization

Mariz6-May-03 4:45

Re: Loading - Serialization

6-May-03 4:45

I´m having a problem when a try to load:
(*pArchive) >> m_nId;

Do you have to do some kind of cast...?

João Paulo Figueira6-May-03 7:08

Re: Loading - Serialization

6-May-03 7:08

What kind of problem (compile-time or run-time)? Normally you use the CArchive object as a reference, not as a pointer, but I cannot see why this should cause any problem.

Mariz6-May-03 7:18

Re: Loading - Serialization

6-May-03 7:18

It´s run-time error... "An attempt was made to access an unnamed file past its end"

João Paulo Figueira6-May-03 11:08

6-May-03 11:08

The only reason I can think of is that you are trying to read more than you wrote to the file. I always try to make the serialization code symmetrical, i.e. for each insert I write an extract. This has worked seamlessly for me.

Serialize for MFC

Mariz2-May-03 5:58

Re: eMbedded Visual C++ Help

2-May-03 5:58

Has anybody used serialize... Some code examples would be good.

Thanks!

Re: Serialize for MFC

Ancient Dragon3-May-03 16:34

Ancient Dragon

3-May-03 16:34

PocketPC 2002: works just like the desktop Win32 version -- CFile and CArchive.

eMbedded Visual C++ Help

Jarek G1-May-03 1:03

Jarek G

1-May-03 1:03

Hi!
I can't get the activesync to work?
I create a project in eVC++ and start Desktop Handheld PC Pro Emulation
But it wont work the eVC++ says that activesync must be installed??
I installed the hole package Microsoft eMbedded Visual Tools 3.0

Anny suggestions on what might be wrong?
/Jarek

He believed the commercials that said drink beer, get laid
but at closin' time he was alone, he didn't get paid.
Last night his lover was a razorblade..
"Dan Reed song Mix it up"

What do you want to patch today?

João Paulo Figueira1-May-03 10:51

Re: eMbedded Visual C++ Help

1-May-03 10:51

I had a similar problem with the PocketPC 2002 emulator. It is documented somewhere in MSDN that in order for the connection between eVC and the emulator to work, you must have a working and connected network card with the TCP/IP protocol. Well, if you don't have one, you can always install the Microsoft Loopback Adapter. Its is a dummy software-only network card driver that will allow you to work with the emulator. It should have been delivered in your OS installation. You can install it through the Hardware Wizard in W2K, or similar in other OS.

Good luck,
João Paulo

Jarek G1-May-03 22:34

Jarek G

1-May-03 22:34

Thank you!
I have a small Network at home 3 computers so it can't be that Frown | :-(

I dowmloaded the newest Activesync from MS but it wont help?
I think I have to get a good book about the eVC++ or RTFM once again.

/Jarek

He believed the commercials that said drink beer, get laid
but at closin' time he was alone, he didn't get paid.
Last night his lover was a razorblade..
"Dan Reed song Mix it up"

What do you want to patch today?

Killing an aplication

Mariz29-Apr-03 4:24