Re: Unhandled Exception.... :'( (Code you people asked) - C / C++ / MFC Discussion Boards

Hi, I'm newbie with visual c++ and c++ in general. As I told in subject, I have serious troubles getting data saved from listctrl.

hi,
with listctrl you can get only the text of listctrl's items. GetItemText(...) - parameters of this functions depends of wich view u use listctrl(large icon, small icon, report view....). This func return text as a CString object which you can save it any where you want - in file, in database, in registry .......

Does anyone know how to remove a dialog box from an application.
clearly erasing it from the .rc file is not enough...

Keep it simple

Hi,
Delete the class (.cpp,.h) files, the resource, and all the files where it is referenced.
Sujan

well the problem i m facing is a little strange.....:'( ... the problem occurs in VC provided class called CPushRoutingFrame...the function is Pop().... and the exception is Access violation..
It occurs occasionally and best part is in an empty destructor of one of my Window class.

what could be the problem>>??? please help asap.

shoaib

Hell is full so i m back.... Smile | :)

could you give the lines where the error occured ?

watch also the functions call stack to understand the reason of this exception...

TOXCCT >>> GEII power

Hi,
Have a look @ the callstack window. It may give more information.
Sujan

well looking at the call stack window didnt helped me much...the full call stack contents are as follows:

> mfc71ud.dll!CPushRoutingFrame::Pop() Line 759 + 0x3 C++
mfc71ud.dll!CFrameWnd::~CFrameWnd() Line 138 + 0xe C++
eOT802asud.dll!4c1445bf()
eOT802asud.dll!4c142e70()
eOT802asud.dll!4c133de8()
ElxAppExtDevud.dll!ECEditorMDIChildWnd::~ECEditorMDIChildWnd() Line 36 + 0x20 C++
ElxVisualPpfaud.exe!ECWndChildFrame::~ECWndChildFrame() Line 79 + 0x44 C++
ElxVisualPpfaud.exe!ECWndChildFrame::`scalar deleting destructor'() + 0x2b C++
mfc71ud.dll!CFrameWnd::PostNcDestroy() Line 213 + 0x1f C++
mfc71ud.dll!CWnd::OnNcDestroy() Line 848 C++
mfc71ud.dll!CWnd::OnWndMsg(unsigned int message=130, unsigned int wParam=0, long lParam=0, long * pResult=0x0012e7bc) Line 2023 C++
mfc71ud.dll!CWnd::WindowProc(unsigned int message=130, unsigned int wParam=0, long lParam=0) Line 1745 + 0x1e C++
mfc71ud.dll!AfxCallWndProc(CWnd * pWnd=0x028dd658, HWND__ * hWnd=0x002006b4, unsigned int nMsg=130, unsigned int wParam=0, long lParam=0) Line 241 + 0x1a C++
mfc71ud.dll!AfxWndProc(HWND__ * hWnd=0x002006b4, unsigned int nMsg=130, unsigned int wParam=0, long lParam=0) Line 389 C++
mfc71ud.dll!AfxWndProcBase(HWND__ * hWnd=0x002006b4, unsigned int nMsg=130, unsigned int wParam=0, long lParam=0) Line 209 + 0x15 C++
user32.dll!77d43a68()
user32.dll!77d43b37()
user32.dll!77d45b40()
user32.dll!77d45b5f()
esfl202asud.dll!4e065046()
esfl202asud.dll!4e064d47()
uxtheme.dll!5ad73c6e()
uxtheme.dll!5ad71b71()
esfl202asud.dll!4e064cea()
user32.dll!77d43a68()
user32.dll!77d4a8f9()
user32.dll!77d4450d()
user32.dll!77d4a15d()
ntdll.dll!77fb4da6()
user32.dll!77d4a191()
user32.dll!77d6399b()
user32.dll!77d639bd()
user32.dll!77d626f6()
user32.dll!77d43a68()
user32.dll!77d43b37()
user32.dll!77d45b40()
user32.dll!77d45b5f()
mfc71ud.dll!CWnd::DefWindowProcW(unsigned int nMsg=545, unsigned int wParam=2098868, long lParam=0) Line 1024 + 0x20 C++
mfc71ud.dll!CWnd::WindowProc(unsigned int message=545, unsigned int wParam=2098868, long lParam=0) Line 1746 + 0x1a C++
mfc71ud.dll!AfxCallWndProc(CWnd * pWnd=0x028a3c78, HWND__ * hWnd=0x00330542, unsigned int nMsg=545, unsigned int wParam=2098868, long lParam=0) Line 241 + 0x1a C++
mfc71ud.dll!AfxWndProc(HWND__ * hWnd=0x00330542, unsigned int nMsg=545, unsigned int wParam=2098868, long lParam=0) Line 389 C++
mfc71ud.dll!AfxWndProcBase(HWND__ * hWnd=0x00330542, unsigned int nMsg=545, unsigned int wParam=2098868, long lParam=0) Line 209 + 0x15 C++
user32.dll!77d43a68()
user32.dll!77d43b37()
user32.dll!77d4450d()
user32.dll!77d4453d()
ntdll.dll!77fb4da6()
user32.dll!77d45843()
user32.dll!77d4693b()
user32.dll!77d454cc()
mfc71ud.dll!CMDIChildWnd::MDIDestroy() Line 959 + 0x4c C++
mfc71ud.dll!CMDIChildWnd::DestroyWindow() Line 449 C++
ElxVisualPpfaud.exe!ECWndChildFrame::DestroyWindow() Line 748 C++
mfc71ud.dll!CFrameWnd::OnClose() Line 851 C++
ElxAppExtDevud.dll!ECEditorMDIChildWnd::OnClose() Line 122 C++
ElxVisualPpfaud.exe!ECWndChildFrame::OnClose() Line 177 + 0xb C++
mfc71ud.dll!CWnd::OnWndMsg(unsigned int message=16, unsigned int wParam=0, long lParam=0, long * pResult=0x0012f3b4) Line 2023 C++
mfc71ud.dll!CWnd::WindowProc(unsigned int message=16, unsigned int wParam=0, long lParam=0) Line 1745 + 0x1e C++
mfc71ud.dll!AfxCallWndProc(CWnd * pWnd=0x028dd658, HWND__ * hWnd=0x002006b4, unsigned int nMsg=16, unsigned int wParam=0, long lParam=0) Line 241 + 0x1a C++
mfc71ud.dll!AfxWndProc(HWND__ * hWnd=0x002006b4, unsigned int nMsg=16, unsigned int wParam=0, long lParam=0) Line 389 C++
mfc71ud.dll!AfxWndProcBase(HWND__ * hWnd=0x002006b4, unsigned int nMsg=16, unsigned int wParam=0, long lParam=0) Line 209 + 0x15 C++
user32.dll!77d43a68()
user32.dll!77d43b37()
user32.dll!77d45b40()
user32.dll!77d45b5f()
esfl202asud.dll!4e064f17()
esfl202asud.dll!4e064cea()
user32.dll!77d43a68()
user32.dll!77d43b37()
mfc71ud.dll!CThreadSlotData::GetThreadValue(int nSlot=0) Line 269 C++
user32.dll!77d4450d()
user32.dll!77d4453d()
ntdll.dll!77fb4da6()
user32.dll!77d45843()
user32.dll!77d45396()
user32.dll!77d45210()
user32.dll!77d452e8()
user32.dll!77d458e6()
uxtheme.dll!5ad73f9b()
uxtheme.dll!5ad8aad7()
uxtheme.dll!5ad71ae1()
uxtheme.dll!5ad71b48()
user32.dll!77d45a7b()
user32.dll!77d45d31()
user32.dll!77d59d13()
user32.dll!77d62710()
mfc71ud.dll!CMDIChildWnd::DefWindowProcW(unsigned int nMsg=274, unsigned int wParam=61536, long lParam=2753532) Line 433 C++
eOT802asud.dll!4c1436e8()
mfc71ud.dll!CWnd::Default() Line 275 C++
mfc71ud.dll!CWnd::OnSysCommand(unsigned int __formal=61536, unsigned int __formal=61536) Line 436 + 0xf C++
mfc71ud.dll!CFrameWnd::OnSysCommand(unsigned int nID=61536, long lParam=2753532) Line 1047 C++
ElxAppExtDevud.dll!ECEditorMDIChildWnd::OnSysCommand(unsigned int nID=61536, long lParam=2753532) Line 178 C++
mfc71ud.dll!CWnd::OnWndMsg(unsigned int message=274, unsigned int wParam=61536, long lParam=2753532, long * pResult=0x0012fb44) Line 2051 C++
mfc71ud.dll!CWnd::WindowProc(unsigned int message=274, unsigned int wParam=61536, long lParam=2753532) Line 1745 + 0x1e C++
mfc71ud.dll!AfxCallWndProc(CWnd * pWnd=0x028dd658, HWND__ * hWnd=0x002006b4, unsigned int nMsg=274, unsigned int wParam=61536, long lParam=2753532) Line 241 + 0x1a C++
mfc71ud.dll!AfxWndProc(HWND__ * hWnd=0x002006b4, unsigned int nMsg=274, unsigned int wParam=61536, long lParam=2753532) Line 389 C++
mfc71ud.dll!AfxWndProcBase(HWND__ * hWnd=0x002006b4, unsigned int nMsg=274, unsigned int wParam=61536, long lParam=2753532) Line 209 + 0x15 C++
user32.dll!77d43a68()
user32.dll!77d43b37()
user32.dll!77d45b40()
user32.dll!77d45b5f()
esfl202asud.dll!4e064f17()
mfc71ud.dll!CWnd::AttachControlSite(CHandleMap * pMap=0x002006b4) Line 445 + 0x16 C++
esfl202asud.dll!4e064cea()
user32.dll!77d43a68()
user32.dll!77d43b37()
user32.dll!77d43d91()
user32.dll!77d43df7()
mfc71ud.dll!AfxInternalPumpMessage() Line 188 C++
mfc71ud.dll!CWinThread::PumpMessage() Line 916 C++
mfc71ud.dll!CWinThread::Run() Line 637 + 0xb C++
mfc71ud.dll!CWinApp::Run() Line 701 C++
mfc71ud.dll!AfxWinMain(HINSTANCE__ * hInstance=0x00400000, HINSTANCE__ * hPrevInstance=0x00000000, wchar_t * lpCmdLine=0x0002078c, int nCmdShow=1) Line 49 + 0xb C++
ElxVisualPpfaud.exe!wWinMain(HINSTANCE__ * hInstance=0x00400000, HINSTANCE__ * hPrevInstance=0x00000000, wchar_t * lpCmdLine=0x0002078c, int nCmdShow=1) Line 25 C++
ElxVisualPpfaud.exe!wWinMainCRTStartup() Line 390 + 0x39 C
kernel32.dll!77e814c7()

The following is the code where exception occurs...

<br />
void Pop()<br />
{<br />
    ASSERT( pThreadState != NULL );<br />
    ASSERT( pThreadState->m_pPushRoutingFrame == this );<br />
    pThreadState->m_pRoutingFrame = pOldRoutingFrame;<br />
    pThreadState->m_pPushRoutingFrame = pOldPushRoutingFrame;<br />
    pThreadState = NULL;<br />
}<br />

do reply if u get any thing out of this...
shaoib

Hi Shaoib,
No Idea, But still have a look at the following link
http://support.microsoft.com/default.aspx?scid=kb;EN-US;194300[^]
Hoping that this may help you
Sujan

Looks like a useful call stack to me. Can't you just doubleclick on the pop statement within the call stack and have visual studio point you to the line of code in the software? If what you have shown me is the complete function, then I assume that one of the ASSERT inputs is evaluating to zero. I would have no idea why this would be but that is probably what is happening. Since I can't see your whole implementation and have no idea what a routing frame is used for in the context of your system, you'll have to research why pThreadState == NULL or why pThreadState->m_pPushRoutingFrame != this. One of those conditions is probably be causing the program to halt since that is the function you've shown me the crash occurs in.

Simply assigning variables wouldn't cause a crash unless another thread within the system is trying to access the routing frame pointers while you are making the pointer swaps. This is another thing to look into. Since you obviously are using threads AND I don't see the use of a CMutex or CCriticalSection, you have to check and see if you have thread conflicts. Is it possible that the pop function is getting interrupted while you are reassigning the pointer values? Perhaps another thread is trying to use the pointer before the pop function is finished. But then if that were the case, I'd expect the debug crash to occur in another function or class. Weird; but swapping pointers like you are when running in a multithreaded system is very dangerous and the CCriticalSection and CMutex classes should be used to protect your software from erratic behavior.

Regards,
Shawn

hi 2 all,
well the issue is still not understood by me.... the only problem is that .... as far as my app being multithreaded is conserned i dont think thats an issue, the problem is as u must have seen, that the code crashes in a destructor... of CFrameWnd derived class...:'( well, as far as i get from my research this problem has something to do with dll's loading and thread states... well if any one know anything about it.... do reply asap.

You never gave us the code for the destructor. Again, the call stack looks pretty plain to me. It's telling you exactly where the crash occurred. Without being able to look over your shoulder and step through your source code, there isn't a whole lot anyone else can do. IF it crashes in the destructor, why is the last call stack statement in the pop function?? My assumption is that the pop was where the crash occurred since that is where the program appears to have halted and this is the code fragment you gave us. While you are running in debug mode, are you able to step through the code right before the crash? WHen the system does crash, you should be able to double click on each statement in the call stack and perform an analysis of variable states; look for NULL pointers and test the assert conditions, etc. Consider yourself lucky to have a call stack that points directly at your code. Many times, you get call stacks that are pointing to MFC code which is really hard to troubleshoot.

Shawn

well i think i mentioned in one of my post that the code crashes some where IN THE MFC Code... the pop function i gave you was from afxpriv.cpp and it is an MFC file... one more thing as i mentioned back that the assert IS because of a NULL pointer... but i dont have a clue y its NULL.. cuz it have something to do with AFX_MANAGE_STATE... and sh*t like that... MSDN doesnt give any info about it...
and again the best part is that it crashes occasionally..... not always... there is NO threads in my App.
well i didnt get anything out of it... hope you can help me with AFX_MANAGE_STATE ....or something like that.
as for your query... the last call at the stack is Pop cuz it is automatically called after a CFramewnd derived object is Destroyed using DeleteWindow which removes the current frame from the RoutingFrame stack.
shoaib.

Hi !

I was writing a mailsync module for MSO and i am quite bewildered with one thing.
We use mapilogonEx() ( or initesession() as in ur program ) to login to a profile.Now generally speaking , profiles are not password protected.So, after logging in to a profile , I am able to fetch the messages WITHOUT supplying a password ? ! I mean if i had to retrieve from the server , then OK the user might put in some prompt for password or something , but what about the already downloaded messages ? I am able to view them all the same ?!So i guess the only way to be safe is by password protecting a .pst file....what do you think ?

Thanks,

Best Regards,

Kane

"Some guys hack just to get themselves a girlfriend.What a pathetic reason huh ?"

whoops ..just ignore what i said about initesession..mapilogonex is the only way...but still the question stays ..

-kane

"Some guys hack just to get themselves a girlfriend.What a pathetic reason huh ?"

Hi All,
I am using Wizard97 in MFC. Usually microsoft provides hot keys for
' Next ' and ' Back ' Button. I want hot keys for Finish and Cancel button.

Please let me know any of your solution or idea.

Thanks
Pushkar

i'm not sure to understand... you want hot keys in your program, or in the Visual C++ 97's MFC Wizard ???
if you choose for the second one, i don't think it is possible to modify for it.
If you're talking about the letters underlined on the buttons' captions, type Alt on the keyBoard to see them appear.
otherwise, i don't understand what you want ; you will be pleased to detail a bit more you problem, so.

TOXCCT >>> GEII power

Hi,
I have created an application which consists of dialog boxes corresponding to the various options. Presently i call each dialog box on the click of a particular button. Now i want to use a tabbed structure instead of buttons. How can i do that.
One possible way is to change the base class of the dialog objects from CDialog to CPropertySheet & then use the AddPage api to display the dialog. But how do i redefine the base class?

<font style="color:blue;">class</font> CmyClass : <font style="color:blue;">public</font> CDialog CPropertySheet {
    <font style="color:green;">//...</font>
};

like this ? Confused | :confused:

TOXCCT >>> GEII power

Hi This may work, but MUST HAVE TO CHANGE THE STYLE of the dialog template(THIN etc)
Sujan

anless change name of base class from CDialog to CPropertyPage u need to change in macross to (IMPLEMENT_DYNAMIC(..., CPropertyPage) and in BEGIN_MESSAGE_MAP(..., CPropertyPage) and change anywhere in code where is use base class Smile | :)

After that u must create object from CPropertySheet to wich you add your dialogs .... and it wil work Smile | :)

Can anyone out there show me a simple way to change a CListbox font i'm using in a Pocket PC app. Everything I've tried only seems to change the size of the selection highlight, not the font itself. in particular I want to use "Courier" size 8. An other way I tried to tackle the problem was to change it in the .rc file, but it seems I can only change the whole dialog. (ie all controls) Is is possible to change just the listbox font in the .rc file?

Hi....

I wanted to know whether we can create a dialog based Appliocation having document/view support, indirectly saying to have databse support in a dialog base application.

After entering the application wizard, in the second step it asks for the type of application to be built. if we go for SDI or MDI we can choose the document/view option and then canchoose our data source. But if we choose the dialog based application, then the option for choosing the data source is no more available.

Now how to give this dialog based application the database connectivity ???????

And further more if we are calling further more dialogs from the first dialog window then the connectivity should be there for all the windows.

Anyone.....

Pankaj

Hi,
Create a Dialogbased application, Add a new class to it using classwizard. Choose the base class 4 the newclass as CRecordSet, it will ask 4 the other db informations
Sujan

Tha is okay....but when it comes to attaching the member variables with the fields of the database, then the CRecordView class is required. I stuck up here when i have to attach the member variables. Please help in this matter then i suppose it will work successfully !!!

Do reply....

Pankaj