GetProcAddress fails, whats wrong? - Mobile Discussion Boards

misha_grewal13-Feb-04 2:50

13-Feb-04 2:50

Hi,
My application takes and writes data on to the sd card often. I am experiencing a lot of SD Card corruption cases. I have fixed every possible loophole as such, but have no idea as to what causes this SD card to be corrupt

Any ideas?
What all scenarios cause sd card to be corrupt?

Re: SD Card corruption

CJCraft.com13-Feb-04 9:19

CJCraft.com

13-Feb-04 9:19

Eventually SD card's cannot retain new writes. But this is after a very large number of writes. If you were reading and writing to the SD card continuosly I suppose you could have reached that point. Have to tried reading and writing to the device's memory instead of the SD card to confirm that it is indeed a problem with the SD card. Do you have another SD card you could try? Or another device you could test the card on?

Re: SD Card corruption

misha_grewal13-Feb-04 9:45

misha_grewal

13-Feb-04 9:45

Thanks,
I did not know that eventually SD cards would crash. Any document or more info about that.
My application writes to a log file in SD Card as long as it runs.It logs every event and method of the app being called by the user. Infact everything that my app needs like the database, the text files to read data from and write data into, log files etc all of them are in SD Card. This application runs around 1 or 2 days or so then somehow somewhere SD Card gets corrupt.The corruption is very sporadic.So not able to replicate..

Is there some max number after which the SD Card cannot write and just crashes. I have tried with a couple of SD Cards, and all of them exhibit the same kind of behaviour. But not due a specific operation in the application but just random operation.

Thanks in advance...

Can't debug using emulator

camasmartin12-Feb-04 21:32

camasmartin

12-Feb-04 21:32

Visual Studio 2003
PocketPC 2003 SDK

When I try to debug, emulator starts, everything loads into it, and the program is downloaded. I can go to the emulator and run the program. But Visual Studio does not go into debug mode so I can set breakpoints, look at things, etc.

Any suggestions?

Thank you

camasmartin
hobby programmer

Re: Can't debug using emulator

camasmartin16-Feb-04 9:18

camasmartin

16-Feb-04 9:18

Ignore. Cockpit error (the loose nut was the pilot). When I reinstalled visual studio, it was the old version that didnt support the pocket PC SDK. A lesson for all. Try reading.

camasmartin
hobby programmer

Grids with EVC++3.0

coye11-Feb-04 23:38

coye

11-Feb-04 23:38

I developed a app for my PDA with EVC++3.0 and ADOCE 3.1. I need a DataGrid or similar componnent for browse too large datasets ?

Thanks for your time.

Re: Grids with EVC++3.0

Cedric Moonen12-Feb-04 3:15

Cedric Moonen

12-Feb-04 3:15

If you're using MFC, you can use the MFC Grid control [^] developped by Chris Maunder. It's realy complete...

Hope this helps

GetProcAddress fails, whats wrong?

vinken11-Feb-04 22:57

vinken

11-Feb-04 22:57

I'm doing a dll on my pocketpc and it fails when I try to get a function pointer from it.

I have this in the dll code:

__declspec (dllexport) void InitFunc (void);
void InitFunc (void)
{
...
}

And this is how I load the dll in the main program:

HINSTANCE hDll;
FARPROC dllInitFunc;
void LoadLib (void)
{
DWORD err;

hDll=LoadLibrary(L"mylib.dll");
if (hDll==NULL){
MessageBox(hWnd,L"Failed to load dll",L"Error",MB_OK);
return;
}
dllInitFunc=GetProcAddress(hVibradll,L"InitFunc");
if (dllInitFunc==NULL){
err=GetLastError();
MessageBox(hWnd,L"Failed to get proc address",L"Error",MB_OK);
}
}

dllInitFunc becomes NULL and err is 87, ERROR_INVALID_PARAMETER.

What am I doing wrong?

Re: GetProcAddress fails, whats wrong?

Jonas Larsson12-Feb-04 3:50

Jonas Larsson

12-Feb-04 3:50

dllInitFunc=GetProcAddress(hDll,L"InitFunc");

“Our solar system is Jupiter and a bunch of junk” - Charley Lineweaver 2002

Where to find Information about Getting data from GPS

Rassul Yunussov11-Feb-04 22:06

Rassul Yunussov

11-Feb-04 22:06

I mean getting data from different connection settings for example Blue Tuth or Thrue the flash card???

Creating a new folder with MAPI

Dhustone11-Feb-04 4:27

Dhustone

11-Feb-04 4:27

The problem is this:
I wish to create a folder inside the 'My Documents' folder.
I am fairly sure that it must be done via MAPI but all the documentation I have found relates to using messages such as email, SMS, etc.
I have initialized COM and MAPI and have opened a session with MAPILogonEx() but from here I'm stumped.
How do I access the IMAPIFolder interface from my session pointer?
Help...

Back color of a static text

Cedric Moonen11-Feb-04 4:09

Cedric Moonen

11-Feb-04 4:09

Hello !

I have a SDI app (view derived from CFormView) in wich I repainted the background in grey (instead of white). I have a static text on it and of course the background color is white...
I want to color it in grey. Who can I do it? Can I send a message to the control or do I need to subclass the control ?

Thanks

Re: Back color of a static text

João Paulo Figueira11-Feb-04 5:11

João Paulo Figueira

11-Feb-04 5:11

Write a handler for OnCtlColor (MFC). You will be able to specify the device context's colors (text and background).

Regards,
João Paulo

Re: Back color of a static text

Cedric Moonen11-Feb-04 20:43

Cedric Moonen

11-Feb-04 20:43

Great !!

Thank you

Wait cursor

Cedric Moonen11-Feb-04 1:38

Cedric Moonen

11-Feb-04 1:38

Hello !!

My program need to do somme processing that takes quite a long time. I want to show the typical "wait cursor" on the screen. How can I do this ?

Thanks
Ced

Re: Wait cursor

Jonas Larsson11-Feb-04 2:27

Jonas Larsson

11-Feb-04 2:27

MFC:

{
...
CWaitCursor wc;
// Lengthy operation here
...
} // wc goes out of scope and the wait cursor disappears.

win32:

...
// set cursor
HCURSOR hc = LoadCursor(NULL, IDC_WAIT); // use either NULL or your app's hInstance
if (hc)
    SetCursor(hc);
// Lengthy operation here
// reset cursor
if (hc)
    SetCursor(LoadCursor(NULL, IDC_ARROW));
...

“Our solar system is Jupiter and a bunch of junk” - Charley Lineweaver 2002

Re: Wait cursor

Cedric Moonen11-Feb-04 2:30

Cedric Moonen

11-Feb-04 2:30

Wooooww !!
That's realy easy Wink | ;-)

Thanks

First Chance Exception

CHChenzo9-Feb-04 16:27

CHChenzo

9-Feb-04 16:27

In Windows CE.NET 4.2, when I Call the CMyPropSheet::DoModal(), it cause an exception at the function call as below:
int CPropertySheet::DoModal()
{
...
==> HWND hWnd = (HWND)::PropertySheet((AFX_OLDPROPSHEETHEADER*)psh);
...
};
The description as below is copy from the online help of CPropertySheet member function DoModal:
{

The first time a property page is created from its corresponding dialog resource, it may cause a first-chance exception. This is a result of the property page changing the style of the dialog resource to the required style prior to creating the page. Because resources are generally read-only, this causes an exception. The exception is handled by the system, and a copy of the modified resource is made automatically by the system. The first-chance exception can thus be ignored.

}
but the system seem did not handle this exception, this would never happen in Windows CE.NET 4.1.
I need somebody to help me to solve this problem, thanks in advance!

web server access via bluetooth

P_JAYAPRAKASH8-Feb-04 20:48

P_JAYAPRAKASH

8-Feb-04 20:48

hello friends,
I would like to run an application( which is in the web server) on the pocket pc using bluetooth technology. Please tell me your valuable suggestions.

Thanks
JP

SDI and the return key closing my program

James_L_Williams7-Feb-04 15:01

James_L_Williams

7-Feb-04 15:01

Hello,

Can someone please tell me why my SDI application in MFC is always closing whenever the VK_RETURN "Enter Key" is pressed on the SIP Keyboard, or when I press my PDA select button. How can I stop this from happing.

Also, how can I detect when the enter key has been pressed in a listCtrl?

Thanks,

James

Re: SDI and the return key closing my program

João Paulo Figueira8-Feb-04 5:57

João Paulo Figueira

8-Feb-04 5:57

This behaviour is typical of dialog applications, not SDI (non-doc/view). What is the top-right button: (ok) or (X)?

Regards,
João Paulo

Re: SDI and the return key closing my program

Cedric Moonen19-Feb-04 0:00

Cedric Moonen

19-Feb-04 0:00

Hi !

I have this behaviour in a SDI document/view application also !!
I tried to override :

void CMainFrame::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) <br />
{<br />
	// TODO: Add your message handler code here and/or call default<br />
	<br />
//	CFrameWnd::OnChar(nChar, nRepCnt, nFlags);<br />
}<br />
<br />
void CMainFrame::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) <br />
{<br />
	// TODO: Add your message handler code here and/or call default<br />
	<br />
//	CFrameWnd::OnKeyDown(nChar, nRepCnt, nFlags);<br />
}

But this doesn't work !!
Any idea how this can be solved ?

Thanks (and thanks James also for helping to discover this bug Poke tongue | ;-P

)

Ced

evc 4.0 and visual studio.net

bryce6-Feb-04 17:57

bryce

6-Feb-04 17:57

Hi
I have recently pickedup visual studio.net professional
and i see i can dev apps for mobile device in c#.
I also have evc4.0, am i correct in recalling that i am able to install evc4.0 and have it integrate itself with vs.net so i can develop my pocket pc apps in c++ inside vs.net?
regards
Bryce

---
Publitor, making Pubmed easy.
http://www.sohocode.com/publitor

Re: evc 4.0 and visual studio.net

LunaticFringe9-Feb-04 14:48

LunaticFringe

9-Feb-04 14:48

I think you've misunderstood. (Of course on the other hand, if I'm wrong I'd like to know, too.) To develop apps in C++, you still need to use the eVC4 IDE. To target the pocketpc 2002 and below, use eVC3.

FindFirstFlashCard/FindNextFlashCard

Dan Broomall6-Feb-04 9:25

Dan Broomall

6-Feb-04 9:25

I am attempting to access these functions through a .NET wrapper. I am using P/Invoke, but I am having very little success. Does anyone out there have an example of how to do this? When I can get it compiled and the call made, I get a NotSupportedException returned with very little explanation. Other times, I can't get it to compile because I have been unable to fill the Long variable (acting as a LPWIN32_FIND_DATA object) I am passing to the function call properly prior to use.

Any thoughts on this?

Thanks

Dan

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