I'm having a _CrtIsValidHeapPointer assertion at the _free_dbg_lk
function. I'm calling a function from a DLL witch allocates (malloc) a
char array and the exception occours freeing the array.
The DLL that causes the problem is compiled and linked on the same way

I have developed a COM component using C++. And I need to invoke some
functions in another DLL which is implemented in C#. I am wondering whether
there are any tutorials or samples of how to do this correctly and safely?
I have this question because I noticed that the data types ...

Hello, dear all,
I often see these two import usage in the code. Both are the interface
to use the Dll library. I think they are the same.
Normally P/Invoke means using the  [DllImport ....] to import the

I hope someone can explain why this piece of code is failing:
   CHARSETINFO csi;
   BOOL brc = TranslateCharsetInfo(&cf.locale, &csi, TCI_SRCLOCALE);
cf.locale is an LCID with value 0x00000409.

Hai
 I am new to C#. I am cutting a part of an image from the picturebox
and i want to pass the part of the clipped image as a parameter to do
image processing.The parameter is input image file.How to carry on

How to declare a global variable in c++.net 2003 ?
There is no something like module in c++.net .
Thanks

If I want to convert LPCTSTR and HRESULT to standard C/C++ data type (like
char*, int, long, etc.), I am wondering what standard data types should I
convert to be safe and do not lose and data precise?
thanks in advance,

I find to initialize two dimentional array in Visual Studio, I have to
specify the number of elements. For example,
[code]
const char foo[][] = {"hello",  "world"}; // compile error

might be slightly OT...
I am writing a wrapper (ATL) COM class around a C++ class. The C++ class
does not have a default ctor - The ctor requires various arguments to be
passed to it - one of which is a C++ reference.

I am using Windows API open (create) a new file by CreateFile,
http://msdn2.microsoft.com/en-us/library/aa363858.aspx
the return value is HANDLE, if I use fwrite to write content to the file,
since fwrite requires FILE* as parameter. I think HANDLE is not the same as

The 3rd parameter of WriteFile is number of bytes to write,
http://msdn2.microsoft.com/en-us/library/aa365747.aspx
I am wondering if I want to write multi-byte character string or wide
character string on Windows, how could I get the number of bytes?

This may not be the right place, but it seems like a good starting point so
here goes:
I am trying to scroll the listview during a drag drop operation. I have the
drag drop part working, but the scrolling is trouble. How can I set the

In VB: Public x as new Form1
How to change the above code in VC++
it seems the following doesn't work in the winmain
public x* = new Form1();

I am using Microsoft Visual Studio 2005 Prof.
I am (only) using the C++ part of it (or i think so).
When i am compiling my code i get the error "error C2653: 'std' : is not a
class or namespace name"

Is it possible to add a VB ocx to a .NET VC++ project?
If yes, how do I do it?