heap corruption error - Managed C++/CLI Discussion Boards

Re: c++ small project

Shameel19-Sep-12 23:48

Shameel

19-Sep-12 23:48

You might want to hire this guy[^] to get you started.

MCF Class Templates

davidconnerley5-Sep-12 10:34

davidconnerley

5-Sep-12 10:34

I tried to download and install the patch for the microsoft foundation classes fo Visual c++ express 2010 but can not seem to make it work

Re: MCF Class Templates

Wes Aday5-Sep-12 11:49

Wes Aday

5-Sep-12 11:49

Okay... you might try asking in the MFC forum, here[^]. This is the Mangaged C++ forum. And when you ask there, you might consider including more information. "can not seem to make it work" is not a very helpful description of your problem.

Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Please stand in front of my pistol, smile and wait for the flash - JSOP 2012

Re: MCF Class Templates

Albert Holguin5-Sep-12 12:30

Albert Holguin

5-Sep-12 12:30

Actually, since this is a configuration question (and not programming)... shouldn't it go to the VisualStudio forum[^]?

Re: MCF Class Templates

Wes Aday5-Sep-12 12:56

Wes Aday

5-Sep-12 12:56

Albert Holguin wrote:
configuration question

You are probably right.

Re: MCF Class Templates

Albert Holguin5-Sep-12 12:31

Albert Holguin

5-Sep-12 12:31

You definitely need to post more information... and be in a more appropriate forum as suggested by Wes.

Re: MCF Class Templates

Richard MacCutchan5-Sep-12 23:25

Richard MacCutchan

5-Sep-12 23:25

Visual C++ Express does not include MFC so I am not sure why you are trying to add a patch.

One of these days I'm going to think of a really clever signature.

heap corruption error

igotmymtv200521-Aug-12 9:33

igotmymtv2005

21-Aug-12 9:33

I just downloaded the "Using managed code in an unmanaged application" from code project. Unfortunately under msvs 2010, when the app is run you get a heap corruption error. Is there someone here who can help out and identify the problem. This is a great example if it worked.

codeproject link

thank you,

Re: heap corruption error

Wes Aday21-Aug-12 10:07

Wes Aday

21-Aug-12 10:07

igotmymtv2005 wrote:
someone here who can help out

Is there something stopping you? I am sure that the author would appreciate someone bringing the code up to VS2010/2012 since the article was written over 6 years ago. Please feel free to correct the code and possbily publish your own article as an update to that one.

Re: heap corruption error

Richard MacCutchan21-Aug-12 22:47

Richard MacCutchan

21-Aug-12 22:47

Time to start learning then.

One of these days I'm going to think of a really clever signature.

Re: heap corruption error

igotmymtv200522-Aug-12 16:03

igotmymtv2005

22-Aug-12 16:03

Richard,

If this is all you have to contribute, to people asking for assistance, then you should refrain from wasting the bits and space.

Re: heap corruption error

Richard MacCutchan22-Aug-12 21:06

Richard MacCutchan

22-Aug-12 21:06

You commented that you know nothing about managed C++, as if we can somehow resolve that for you. I was merely suggesting what you need to do if you want to understand the problem you are reporting.

One of these days I'm going to think of a really clever signature.

Re: heap corruption error

jschell23-Aug-12 9:01

jschell

23-Aug-12 9:01

igotmymtv2005 wrote:
If this is all you have to contribute, to people asking for assistance, then you
should refrain from wasting the bits and space.

If you want to learn about using unmanaged code then you MUST learn about the many, many ways in which C++ can fail due to pointer problems.

Those are probably the most significant problem that an experienced C++ programmer will face (given that they will have overcome syntax and basic semantic errors.)

An inexperienced programmers will run across them too even though it is based on simple misused of something.

How to call a function in DLL created in C++ in 2008 .NET

Andraw11120-Aug-12 4:39

Andraw111

20-Aug-12 4:39

Hi, dear all,

I have a DLL created in C++ in 2008 .NET, it exports a function to be used by many other applications.

Now I have a application also created in C++ in VS2008, I need to call that function from DLL, how can I do it? also the DLL file path is come from my application argument list.

Thanks!

Re: How to call a function in DLL created in C++ in 2008 .NET

Krishnakumartg24-Aug-12 5:56

Krishnakumartg

24-Aug-12 5:56

Have you done the same in VC6?

How to activate keys combination with hook ?

zayl54317-Aug-12 0:18

zayl543

17-Aug-12 0:18

Hi
To get the symbol @ for example, I must press two buttons at seem time [Alt Gr] + [button with a and 0 near the backspace button]. So actually my application didn't support keys combination, so when I press this combination I get letter 'a' instead of symbol '@'. I am using VCE 2008. Here is the function I am using :

C++

LRESULT WINAPI EventKey(int nCode, WPARAM wParam, LPARAM lParam)
{
if( (nCode == HC_ACTION) && ( (wParam == WM_SYSKEYDOWN) || (wParam == WM_KEYDOWN) )) 
{
kbdStruct = *((KBDLLHOOKSTRUCT*)lParam);
nChar = getKeyFromvcode(kbdStruct.vkCode, (PWCHAR)&outputChar, (PWCHAR)&deadChar);

if(nChar > 0){/* Record the key*/}

}

return CallNextHookEx(hKeyHook, nCode, wParam, lParam);
}

How can I tell the application to convert keys combinations to its associated letters or symbols ?

Regards

Re: How to activate keys combination with hook ?

sanjaylk12-Sep-12 2:00

sanjaylk

12-Sep-12 2:00

From your code snippet , it seems you are hooking keyboard
to detect your combination you must check virtual key codes for ALT and other keys
check msdn link http://msdn.microsoft.com/en-us/library/ms927178.aspx[^] and also search for key logger on code project

void GetFieldValue( LPCTSTR lpszName, CString& strValue );

lucky_122119-Jul-12 22:21

lucky_1221

19-Jul-12 22:21

Hi Friend i have a small doubt,

Can any one clear this issue.

CRecordset::GetFieldValue( LPCTSTR lpszName, CString& strValue );

at what condition it throws CMemoryException,

search in a text fiel

byank18-Jul-12 2:06

byank

18-Jul-12 2:06

Please tell me how to search for a word in a text file in visual c++. Kinda know that I have to use string object and IndexOf? Please, help!!

Re: search in a text fiel

Richard MacCutchan18-Jul-12 3:28

Richard MacCutchan

18-Jul-12 3:28

byank wrote:
Kinda know that I have to use string object and IndexOf?

So what is your problem? Have you considered using the FindInFiles()[^] method?

One of these days I'm going to think of a really clever signature.

Re: search in a text fiel

byank19-Jul-12 10:58

byank

19-Jul-12 10:58

I'm trying to search for word in a text file which is loaded in a richtextbox in my windows form app. I've seen some code but it was in vb and i need it in c++.
i'll place the word that's gonna be searched for in a textbox and after i click a button i should see if the words exists and where it is. any help is appreciated.

modified 19-Jul-12 17:29pm.

Re: search in a text fiel

Richard MacCutchan19-Jul-12 22:05

Richard MacCutchan

19-Jul-12 22:05

If you already have the text loaded in the RichTextBox[^] then you can use any of the Find() methods to do it.

One of these days I'm going to think of a really clever signature.

Convert string to integer only such that if it is alphanumeric or float it shouldnot return anything

Abinash Mohanty17-Jul-12 3:13

Abinash Mohanty

17-Jul-12 3:13

Hi All,

I want to covert a string to integer.Consider the string as char str[10]; and integer as int num; My case is as following:-
1) Suppose str = "10"
num should be = 10
2) Suppose str = "10.88"
num should be 0 or any invalid number so that we can identify that its not an integer but any other value.
3) Suppose str = "10ab"
num should be 0 or any invalid number so that we can identify that its not an integer but any other value.

Is there any direct API by which we can identify the above cases. I have tried atoi() but it returns the remaining integer value after removing the float or alphanumeric values.
Or
I have to try it by creating my own method.

Re: Convert string to integer only such that if it is alphanumeric or float it shouldnot return anything

John Schroedl17-Jul-12 3:29

John Schroedl

17-Jul-12 3:29

Since this is the C++/CLI forum, I'll give you a Managed reply -- use the TryParse static method on Int32 and/or Double classes.

C++

int val;
String^ s = "10.22";
if (System::Int32::TryParse(s,val)) 
    // parsed as Int32.
else
    // try something else...

John

modified 17-Jul-12 10:24am.

Re: Convert string to integer only such that if it is alphanumeric or float it shouldnot return anything

Abinash Mohanty17-Jul-12 18:13

Abinash Mohanty

17-Jul-12 18:13

Thanks John for your reply. I am sorry I posted this thread in C++/CLI forum. Actually I was looking for a solution in C++/MFC.

Sorry for the inconvinience.

Cheers,
Abinash

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