C / C++ / MFC

13-Mar-06 2:28

Hi,
I m facing a strange problem.
I have the following code

myclass
{
set<unsigned> m_uniqueCalUIDs;
public:
int AddPoint(unsigned);
...
};
int AddPoint(unsigned uid)
{
try
{
if (m_uniqueCalUIDs.size() &&
m_uniqueCalUIDs.find(pCal->GetUID()) == m_uniqueCalUIDs.end() &&
m_nMode != MM_LINE)
return -1;
m_uniqueCalUIDs.insert(uid);
...
return 0;
}
catch(...)
{
AfxMessageBox("Unknown Exception");
return -1;
}
}

This class is defined in a DLL (and exported ofcourse) and I am instantiating it in my exe. I call this function from exe too. This code is working fine in the debug mode but it is throwing exception in release mode.
I tried to figure out why is it doing that
I have another class too in the dll that is using set and that is working fine
so can anybody help

Monty²13-Mar-06 2:33

Monty²

13-Mar-06 2:33

Farhat Aisha wrote:
_uniqueCalUIDs.find(pCal->GetUID())

what is pCal?

C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg

Farhat Aisha13-Mar-06 2:37

13-Mar-06 2:37

This is another class pointer and i have already check it before entering the function. It is not null. And i have also replaced with with a constant too like
uniqueCalUIDs.insert((unsigned)11);
but it is still throwing the exception

toxcct13-Mar-06 2:38

toxcct

13-Mar-06 2:38

and the exception is... ?
where does it happen also ?

Farhat Aisha13-Mar-06 3:00

13-Mar-06 3:00

Actually it is throwing the exception on that line. I ccouldn;t get the exception type
I caught it with catch(...)

But i have finally get around with this problem when i changed my variable
from set <unsigned> to set<int>

and type-cast the argument i am passing to it

if (m_uniqueCalUIDs.size() &&
m_uniqueCalUIDs.find((int)pCal->GetUID()) == m_uniqueCalUIDs.end() &&
m_nMode != MM_LINE)
return -1;

m_uniqueCalUIDs.insert((int)pCal->GetUID());

But this is really wierd to me. Any idea why is it behaving like that?

-- modified at 9:01 Monday 13th March, 2006

James R. Twine13-Mar-06 2:59

James R. Twine

13-Mar-06 2:59

Farhat Aisha wrote:
This is another class pointer and i have already check it before entering the function. It is not null.

Not NULL does not necessarily mean valid. You might want to see if the exception is being raised before you call into the STL class, when you dereference the pointer (by accessing a member off of it).

Peace!

-=- James

If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
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Farhat Aisha13-Mar-06 3:01

how to paint a bitmap on client?

13-Mar-06 3:01

I replaced it with a constant value like insert((unsigned) 11) and it still crashed

derek713-Mar-06 2:00

derek7

13-Mar-06 2:00

case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;

hdcMem = CreateCompatibleDC (hdc) ;
SelectObject (hdcMem, hBitmap) ;

BitBlt (hdc, 0, 0, cx , cy, hdcMem, 0, 0, SRCCOPY) ;

DeleteDC (hdcMem) ;
EndPaint (hwnd, &ps) ;
return 0 ;
it is a way,but how to paint without memory device context?
but SelectObject (hdc, hBitmap) does not put bitmap on screen.

C^hris L^osinger13-Mar-06 2:09

C^hris L^osinger

13-Mar-06 2:09

derek7 wrote:
but how to paint without memory device context?

if you can get your image as a DIB, you can use StretchDIBits (and related functions). but if you have an HBITMAP/CBitmap, you'll need to use a memory DC.

Cleek | Image Toolkits | Thumbnail maker

Hamid_RT13-Mar-06 2:16

Hamid_RT

13-Mar-06 2:16

Hi derek7,

CImage m_Image;
m_Image.Load("c:\\picture.bmp");

void CAnswerView::OnPaint()
{
CPaintDC dc(this); // device context for painting
m_Image.BitBlt(dc.m_hDC,CRect(0,0,800,600),CPoint(0,0));
}

-- modified at 9:04 Monday 13th March, 2006

James R. Twine13-Mar-06 3:01

James R. Twine

13-Mar-06 3:01

-Although you do NOT want to keep on loading the image file each time you get a paint message...

Peace!

-=- James

Visual C++ Express and Visual C++6 ?

Hamid_RT13-Mar-06 3:13

Hamid_RT

13-Mar-06 3:13

Thank you for remind

thierrypp13-Mar-06 1:37

thierrypp

13-Mar-06 1:37

HI,

Does someone knows about the compatibility to have on the same computer, Visual C++ Express 2005 and Visual C++ 6.0 ?

Moreover, where to get Visual C++ Express 2005 in english and the most stable and reliable version?

Thanks a lot!

Regards!

Re: Visual C++ Express and Visual C++6 ?

Kevin McFarlane13-Mar-06 2:04

Kevin McFarlane

13-Mar-06 2:04

They should work fine. So far there is only one version of Express.

Download - http://msdn.microsoft.com/visualc/downloads/msproducts/default.aspx[^]

Kevin

Re: Visual C++ Express and Visual C++6 ?

thierrypp13-Mar-06 8:41

thierrypp

13-Mar-06 8:41

Thanks Kevin,

So, to tell you the truth I have had to cancel quickly Visual C++ Express 2005 and get back my initial projects -some with over 20 files- written with VC++ 6. It was a real mess!!!!!!!

So a question,

what is exactly:

Visual C++ Express 2005 ( language based on C# )?

what are studio 7.0?
studio 7.1
and version 8?

thanks but indeed......I am lost now!

Regards

get motherboard serial number

ss200613-Mar-06 1:15

ss2006

13-Mar-06 1:15

haow i can get any information to identify my motherboard with visual c++ programmes

am

Re: get motherboard serial number

David Crow13-Mar-06 3:09

David Crow

13-Mar-06 3:09

You could try the WMI class Win32_MotherboardDevice.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

how can i set size of dialog box

baldha rakesh13-Mar-06 1:08

baldha rakesh

13-Mar-06 1:08

i want set size of dialog when an event fire how it is possible.

Bankey Khandelwal
Software Engineer

toxcct13-Mar-06 1:10

toxcct

13-Mar-06 1:10

SetWindowPos(), MoveWindow()

Cedric Moonen13-Mar-06 1:10

Cedric Moonen

13-Mar-06 1:10

Take a look at MoveWindow[^]

Hamid_RT13-Mar-06 1:28

Hamid_RT

13-Mar-06 1:28

Hi Bankey Khandelwal,
MoveWindow for change size and I suggestion use MoveWindow in the WM_SIZE

baldha rakesh13-Mar-06 1:45

baldha rakesh

13-Mar-06 1:45

hello sir,

actully i want to maximize the dialog but i have to change width only not height of the dialog and also change the icon of miximize .
when i use movewindow method then it differs from monitor size so what i have to do to maximize the dialog according to monitor size i.e. width is equal to monitor width but according to me.

how it is possible .

Bankey Khandelwal
Software Engineer