How to debug an issue where the debugger does not stop at your breakpoints? - C / C++ / MFC Discussion Boards

Re: Webcam to OpenGL texture

El Corazon21-Aug-07 13:51

El Corazon

21-Aug-07 13:51

Iain Clarke wrote:
but I doubt anyone will give you the whole thing on a platter.

and some are not allowed to serve platters.... bum wrist. Wink | ;)

_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)

WM_PAINT and WM_SIZE

Perspx21-Aug-07 6:10

Perspx

21-Aug-07 6:10

I have created a window and done some drawing in the WM_PAINT message (drawing a border at the window's edge). However, when I resize the window, the window isnt updated from the WM_SIZE message. Is this normal and I have to explicitly have to tell the app to redraw the window when it is sized, or is there a window style or something that I have to set for the window to be updated when it is sized?

If I resize the window, minimize it then restore it, then the window has been repainted with the border at its edge, so I know it is something to do with the WM_SIZE message.

Thanks for your help,
--PerspX

"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates

Re: WM_PAINT and WM_SIZE

Mark Salsbery21-Aug-07 6:13

Mark Salsbery

21-Aug-07 6:13

Can you show the code you use in response to WM_PAINT?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: WM_PAINT and WM_SIZE

Paul M Watt21-Aug-07 6:49

Paul M Watt

21-Aug-07 6:49

You could try getting your resize notification from the WM_WINDOWPOSCHANGED message instead.

Re: WM_PAINT and WM_SIZE

David Crow21-Aug-07 7:35

David Crow

21-Aug-07 7:35

What are you doing in response to the WM_SIZE message?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: WM_PAINT and WM_SIZE

Iain Clarke, Warrior Programmer21-Aug-07 11:25

Iain Clarke, Warrior Programmer

21-Aug-07 11:25

Make sure that your OnSize handler is calling the default implementation also.

ie

void CMyWnd::OnSize (....)
{
    // do my thing
    CWnd::OnSize (....);    (or CDialog:: etc - whatever the parent class is

    // do an other thing
}

Iain.

Re: WM_PAINT and WM_SIZE

Michael Dunn21-Aug-07 14:10

Michael Dunn

21-Aug-07 14:10

Are you using a class library or the APIs directly? If the latter, check that your window class has the CS_HREDRAW and CS_VREDRAW styles.

--Mike--
Visual C++ MVP Cool | :cool:

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How to debug an issue where the debugger does not stop at your breakpoints?

Cyrilix21-Aug-07 5:37

Cyrilix

21-Aug-07 5:37

I am currently using the VC++ debugger to debug both managed and unmanaged code by attaching to a process, setting breakpoints, and running the program in such a way that it should stop at the breakpoints.

I have checked all of my DLLs and they all have debugging symbols loaded (some of them are .NET DLLs). This can be seen in the Modules window. The breakpoints window also shows all of my breakpoints as a solid red, and not "?". For some reason though, my program refuses to stop at these points even though I'm 100% sure that they pass by them.

Any suggestions?

Re: How to debug an issue where the debugger does not stop at your breakpoints?

Mark Salsbery21-Aug-07 6:04

Mark Salsbery

21-Aug-07 6:04

When attaching to the process, have you set the debugger to attach to both native and managed code?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: How to debug an issue where the debugger does not stop at your breakpoints?

Cyrilix21-Aug-07 6:05

Cyrilix

21-Aug-07 6:05

Indeed I do.

Re: How to debug an issue where the debugger does not stop at your breakpoints?

Mark Salsbery21-Aug-07 6:10

Mark Salsbery

21-Aug-07 6:10

hmm...beats me. Will it stop on a breakpoint in the EXE module? If so, can you step into a DLL from there?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: How to debug an issue where the debugger does not stop at your breakpoints?

Cyrilix21-Aug-07 6:31

Cyrilix

21-Aug-07 6:31

I guess I could've tried that, but I decided to do a rebuild, and see if it was some kind of environment issue. The same DLLs are actually placed in multiple locations (copied over, but not sure what kind of script manages it), and you get references from one location to another, so starting from scratch may be the best way.

Thanks for helping.

I'll post an update later to see if I figure anything out.

Re: How to debug an issue where the debugger does not stop at your breakpoints?

Cyrilix21-Aug-07 15:43

Cyrilix

21-Aug-07 15:43

Well, I never really finally understood what was wrong, but by setting the DLL project as the startup application and launching it with the executable specified, rather than attaching to process, something worked (by the way, I didn't figure this out -- I had a bit of help on my end).

SQLExecute() issue [modified]

__yash__21-Aug-07 4:27

__yash__

21-Aug-07 4:27

2nd parameter of SQLConnect() method is the DSN name.
In my application i m using DSN-less connection by specifying the path of data.
So now whst do i pass as the 2nd parameter?

Alternatively: I tried using SQLConfigDataSource():
SQLConfigDataSource(NULL,ODBC_ADD_DSN, "SQL Server (*.mdf)",
"DSN=New SQL Data Source\0");
BUt it returns 'false'
Am i passing it the right data??

-- modified at 0:58 Wednesday 22nd August, 2007

Re: SQLExecute() issue

David Crow21-Aug-07 5:05

David Crow

21-Aug-07 5:05

yashveer wrote:
2nd parameter of SQLExecute() method is the DSN name.

Last time I checked, SQLExecute() had only one parameter, the statement handle. Confused | :confused:

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

..ppm files

Maynka21-Aug-07 4:20

Maynka

21-Aug-07 4:20

Hi,
what are .ppm files.How can we open these files.If they are the type of image format then how can i open them.

Regards,

Re: ..ppm files

Russell^'21-Aug-07 4:56

Russell^'

21-Aug-07 4:56

http://netpbm.sourceforge.net/doc/ppm.html[^]

Russell

Re: ..ppm files

Hamid_RT21-Aug-07 5:00

Hamid_RT

21-Aug-07 5:00

See .PPM File Extension[^] this site is a very good site about extension files you can get perfect info of extension files.

WhiteSky

extracting and storing source code of web page in CString

Dhiraj kumar Saini21-Aug-07 4:15

Dhiraj kumar Saini

21-Aug-07 4:15

i mant to extract html source code of any web page and store it in CString.
Which Interface to use.

Any GURU Pls help me with the code.

thanks in advance.
Dhiraj

Dhiraj Kumar Saini

Re: extracting and storing source code of web page in CString

Anand Todkar21-Aug-07 4:41

Anand Todkar

21-Aug-07 4:41

CInternetSession objInternetsession;
int nLength = 100; // Can be changed.

char* pchData = new char[nLength];

CHttpFile* pHttpFile = (CHttpFile*) objInternetsession.OpenURL(m_csUrl);

long x = pHttpFile->GetLength();

pHttpFile->Read(pchData, x);

CString csData = pchData;

I hope this will work for you.

Thanks,
Anand.

Re: extracting and storing source code of web page in CString

Anand Todkar21-Aug-07 4:43

Anand Todkar

21-Aug-07 4:43

In above example, m_csUrl is a CSting object containing the URL.

Thanks,
Anand.

Re: extracting and storing source code of web page in CString

ThatsAlok21-Aug-07 23:36

ThatsAlok

21-Aug-07 23:36

Dhiraj kumar Saini wrote:
i mant to extract html source code of any web page and store it in CString.
Which Interface to use

http://www.codeproject.com/internet/amhttputils.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
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disaplay source code of a web page in a messagebox

Dhiraj kumar Saini21-Aug-07 3:19

Dhiraj kumar Saini

21-Aug-07 3:19

My problem is that whenever i open a web page i wanna extract the source code of the web page and display it in a MessageBox.
for eg if i visit www.yahoo.com the entire source code of yahoo.com should be extracted and displayed through a message box.

Pls help me out any one of the gurus.

Thanks in advance
Dhiraj Kumar

dhiraj kumar saini

Re: disaplay source code of a web page in a messagebox

David Crow21-Aug-07 3:23

David Crow

21-Aug-07 3:23

Displaying it in Notepad is not sufficient?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: disaplay source code of a web page in a messagebox

Iain Clarke, Warrior Programmer21-Aug-07 3:32

Iain Clarke, Warrior Programmer

21-Aug-07 3:32

Dhiraj kumar Saini wrote:
entire source code of yahoo.com

Yikes, how big is your monitor?

More seriously, you can make your own dialog box, and then add an html control to it, and ask it to display (eg) www.yahoo.com.

But displaying html using the MessageBox command? Tough. You'll have to do a bunch of work yourself.

Iain.

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