C / C++ / MFC

14-Aug-09 0:21

I have made an application with MFC that has run for years with no problems. Suddenly it has started to crash when one module in the program is opened. On my own developer PC it works fine. But on my wife's PC it crashes. Both have Windows XP. It appers that users that have had older versions of the program and has recently upgraded to the latest version, experience no problems. But on PC's that get the program for the first time it tends to break.

The error report says it is a Windows problem, and that the error is in mfc42.dll. I first thought it was a LoadLibrary() function failure, but now i suspect CMSFlexGrid. This ActiveX control is only used in this particular module.

This is very frustrtaing. Has anybody had this similar problems with CMSFlexGrid? How should I proceed to find out what is breaking the program, CMSFlexGrid or anything else.

Best regards, Haakon S.

_AnsHUMAN_ 14-Aug-09 0:29

_AnsHUMAN_

14-Aug-09 0:29

Can you try viewing the crashing dll in Dependency Walker?

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Haakon S.14-Aug-09 4:12

14-Aug-09 4:12

I am not familiar with this tool, but I will try it. Thank you for your help.

Haakon.

Randor 14-Aug-09 2:24

Randor

14-Aug-09 2:24

Hei Haakon,

The Microsoft DataGrid ActiveX Control 6.0 was kill-bitted by Microsoft Update KB960715 (Update Rollup for ActiveX Kill Bits)[^] so you should update to the latest version of the control:

Service Pack 6 for Visual Basic 6.0[^]

This MS Help and Support article explains how ActiveX killbits work:

How to stop an ActiveX control from running in Internet Explorer[^]

Once your development machine with Visual Studio 6 has been updated you can register the new MSFlxGrd.ocx on the client machines.

Hadet bra,
-David Delaune

Haakon S.14-Aug-09 4:10

14-Aug-09 4:10

Sorry, Randor. I had high hopes that this would be the reason Wink | ;)

. But it isn't Sigh | :sigh:

. The error is exactly the same. Thank you for your help anyway. Have a good weekend!

Regards, Haakon.

Randor 14-Aug-09 11:00

Randor

14-Aug-09 11:00

Haakon S. wrote:
The error is exactly the same.

Haakon,
May we see the error message?

Thanks,
-David Delaune

Haakon S.16-Aug-09 10:13

Union, Help me this code!!

16-Aug-09 10:13

Sorry, Randor. On further investigation I see that it is the kill bit issue that is causing the problem. I also see it is a serious matter because it involves changing client machines, which I don't intend to initiate. I will remove the ActiveX control alltogether, and use another grid component.

Thank you for your help.

Regards, Haakon.

nhimconlazy13-Aug-09 22:59

nhimconlazy

13-Aug-09 22:59

union U
{
int x;
int y;
}u;
u.x=0;
u.y=200;
cout<<u.x+u.y<<endl;< b="">
Why does this code print 144?
I don't understand, please help me!
Thanks you very much!

Re: Union, Help me this code!!

_AnsHUMAN_ 14-Aug-09 0:06

_AnsHUMAN_

14-Aug-09 0:06

ideally it should print 400.

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: Union, Help me this code!!

Iain Clarke, Warrior Programmer14-Aug-09 1:31

Iain Clarke, Warrior Programmer

14-Aug-09 1:31

Anshuman is right - it should be 400...

But I notice a coincidence... 256+144 = 400. Are you on some weird architecture? I;ve never heard of 8bit ints, but...

If you'd put in BYTE, or char, I'd be sure of the answer.

Try:

cout << sizeof (U);
u.x = 100;
cout << u.x; // should give 100
u.y = 127;
cout << u.x;  // should give 127
u.x = 257;    
cout << u.x;  // should give 257 - but does it give 1?
cout << (double) (u.x);  // should give 257 - but does it give 1?

This should set some light on your problem.

Iain.

I have now moved to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), or need cotract work done, give me a job! http://cv.imcsoft.co.uk/[^]

How to dynamically load values in String table

Pryabu13-Aug-09 22:02

13-Aug-09 22:02

In string table im having resource ID as IDR_TEST and its string value as "test". Now i want to change the string value at runtime. I have tried with LoadString. But its not working. Anyone please tell me how to load string value at runtime?

Rajesh R Subramanian13-Aug-09 22:19

Rajesh R Subramanian

13-Aug-09 22:19

You've got the basics wrong there. Entries in a string table are not meant to be modified, whatsoever.

If you need a string that needs to be modified, what's wrong with having a member variable?

It is a crappy thing, but it's life -^ Carlo Pallini

Pryabu13-Aug-09 23:05

13-Aug-09 23:05

i want to change the default title of SDI window.So, I want to change the Resource ID IDR_MAINFRAME in string table.

Rajesh R Subramanian13-Aug-09 23:13

Rajesh R Subramanian

13-Aug-09 23:13

Can't you just edit that particular entry in the string table? Also, there's SetWindowText()[^]

It is a crappy thing, but it's life -^ Carlo Pallini

Pryabu13-Aug-09 23:19

13-Aug-09 23:19

No.I will give that title in a ini file.So, the title will change. SetWindowText is not working.

Rajesh R Subramanian13-Aug-09 23:31

Rajesh R Subramanian

13-Aug-09 23:31

Will you PLEASE read the guidelines[^] and post messages that people can understand?

Why are you using an ini file to store the Window's title? What's wrong with using a string table? What exactly are you trying to achieve?

Karthika85 wrote:
SetWindowText is not working.

And what does that mean? What does your code look like?

It is a crappy thing, but it's life -^ Carlo Pallini

Pryabu13-Aug-09 23:45

13-Aug-09 23:45

First,i want to change the default title of a window. I can change the default title in String table.In future,If somebody wants to change the title of my application, again they have to change the string in resource,again they need to compile the whole application.So i want to configure the title in ini file.

I added SetWindowText function inside OnCreate function.Its not working.

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
return -1;

if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP| CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
!m_wndToolBar.LoadToolBar(IDR_MAINFRAME))
{
TRACE0("Failed to create toolbar\n");
return -1; // fail to create
}

int *num,i,j=m_wndToolBar.GetToolBarCtrl().GetButtonCount();
num=new int[j+1];
memset(num,0,(j+1)*sizeof(int));
num[0]=j;
for(i=0;i<j;i++)
{
if(ID_SEPARATOR == m_wndToolBar.GetItemID( i ))
num[i+1]=1;
}

//·Ö¸ô·ûËãÊÇÒ»¸ö°´Å¥£¬¿í¶ÈÓÀÔ¶Îª6
//ÉÏÃæµÃµ½µÄ°´Å¥¾ØÐÎÓÀÔ¶±È¹¤¾ßÀ¸±à¼Æ÷ÀïÃæÉè¶¨µÄ³¤¿í¸÷´ó7
//Èç¹ûÎª¹¤¾ßÀ¸ÉèÖÃÁËÎ»Í¼£¬°´Å¥µÄÐÎ×´ÓÀÔ¶Ö»Óë´´½¨Î»Í¼ÁÐ±íÊ±Ö¸¶¨µÄ´óÐ¡Ò»ÖÂ£¬ÓëÆäËûµØ·½µÄÉèÖÃÎÞ¹Ø

m_wndToolBar.SetFullColorImage(IDB_BITMAP2, RGB(255, 0, 255), num);
delete []num;
if (!m_wndStatusBar.Create(this) ||
!m_wndStatusBar.SetIndicators(indicators,
sizeof(indicators)/sizeof(UINT)))
{
TRACE0("Failed to create status bar\n");
return -1; // fail to create
}

// TODO: Delete these three lines if you don't want the toolbar to
// be dockable
m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
EnableDocking(CBRS_ALIGN_ANY);
DockControlBar(&m_wndToolBar);

SetWindowText("Test");

return 0;
}

kolecat14-Aug-09 5:29

kolecat

14-Aug-09 5:29

try this way

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)<br />
{<br />
    //..............<br />
    cs.lpszName = "Test"; //added<br />
<br />
    return TRUE;<br />
}

maybe you need add following statement before the cs.lpszName = "Test";
cs.style &= ~FWS_ADDTOTITLE;

Pryabu14-Aug-09 1:16