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Hi,
I am trying to create a c++ dll in vs2008 and I have exported the sample function and class available in the files created (by using the export symbol option when the dll created). My problem is that whenever I try to call a the dll I get an error saying that no entry point is found in the dll.
I have manged to get C++ dlls working with vs 2005 and by using dllexport, however things seem to be a little different in vs 2008.
Any help is much appreciated.
Thanks
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The syntax for exporting functions and classes have remained the same for a very long time and it has not changed with VS 2008.
You need to give some more information like -
How are you linking the dll to the exe.
In which language and VS version is the exe developed in.
Some code snippets would be helpful.
«_Superman_»
I love work. It gives me something to do between weekends.
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Hi,
Thanks for the reply.
I am linking the dll to the exe using P/Invoke. The exe is developed in C# VS 2008.
When I use the export symbol option when creating the dll it creates a sample class with a constructor and a independent function (which are said to be exported). I am not sure how to instantiate this class or to call the independent function from the C# application.
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Not totally sure, but I think P/Invoke only supports "C" linkage.
That means you can call exported functions but not exported classes.
If so, you will need to create a wrapper in C++ that export only functions and these functions can delegate function calls to the C++ class.
«_Superman_»
I love work. It gives me something to do between weekends.
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Thanks for the info. I'll check out using a wrapper. It would be nice if I can get the class exported also.
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what is the exact code to get the value of the editbox (variable type double) and displays in the listbox?
i tried : m_list.GetText(m_list.GetCurSel(), m_edit1) and m_list.GetText(m_edit1) but after building committed errors...
please help.
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Neil Jigger wrote: what is the exact code to get the value of the editbox (variable type double) and displays in the listbox?
CString str;
m_edit.GetWindowText(str);
m_listbox.AddString(str);
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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--------------------Configuration: g - Win32 Debug--------------------
Compiling...
gDlg.cpp
C:\Program Files\Microsoft Visual Studio\MyProjects\g\gDlg.cpp(179) : error C2039: 'GetWindowTextA' : is not a member of 'CString'
c:\program files\microsoft visual studio\vc98\mfc\include\afx.h(368) : see declaration of 'CString'
Error executing cl.exe.
g.exe - 1 error(s), 0 warning(s)
still i cannot get the right code...
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Yes.. SetWindowText is not a member of CString.
I assume you are using a textbox. make a variable of control type.
Something like this
CEdit m_edit
and then compile the code.Hope this helps.
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Wanting to know how to create payload as a block of binary data for DNS packet.
I have something in C but i was looking to increase the payload size. (test purposes)
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char *buffer;
buffer = new char[bufferSize + extraSize];
sendto(socket, buffer, bufferSize + extraSize, flags, &destAddr, destaddrSize);
1300 calories of pure beef goodness can't be wrong!
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im using Nemesis DNS generator so im going to call the file to be used and within the file are only datatype and i use the %c and %s to identify dateype when formatting the output
fp = fopen ("datafilename.dns"), "w");
fprintf(fp, "%c%c%c%c, 0x00, 0x01 ")
fprintf(fp,"%c%s, 0x03, "www");
etc......
fclose(fp);
your code may do the same but i am not a strong programmer and was wonder if you could explain if you code does what this does and point me to some reading material
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but like i said, i already created the attack now im trying to generate a bigger one so i will be able to prevent it. you know the gov. created a company who's sole purpose is internet security so i understand that u may think i want this knowledge for ill usage.
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but i will create an algorithm which will solve this problem so remember my user name(s)
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but i will create an algorithm which will solve this problem so remember my user name(s)
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The html content was downloaded from host with security info, such as Credit card number, IP address, user password etc.
I need to display the memory html file directly on a dialog without saving it as temp file for launching by IE or MS-Web-Browser because of security reason (delete file doesn't work always and is dangrous).
Do you know how to do this?
Thanks.
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As I posted before, I thought I succeed to change my pointer shapes as I wanted (please see the codes & remember to add in stdAfx.h the #define OEMRESOURCE:
UpdateData(true);
if(m_Type == "ARROW")
SetSystemCursor(LoadCursor(NULL, IDC_ARROW), OCR_NORMAL);
else if(m_Type == "ALLSIZE")
SetSystemCursor(LoadCursor(NULL, IDC_SIZEALL), OCR_NORMAL);
else if(m_Type == "UPDOWN")
SetSystemCursor(LoadCursor(NULL, IDC_SIZENS), OCR_NORMAL);
else if(m_Type == "UP")
SetSystemCursor(LoadCursor(NULL, IDC_UPARROW), OCR_NORMAL);
UpdateData(false);
- The first time all working as I wanted, but after that they are mixed-up (rarely the right one, most of a time showing 1 of 3 other shapes instead)
Can someone show me the correctiuon, thanks in-advanced
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it looks the m_Type is a CString.
CString should be used with care in rare cases.
i.e.
CString cs0="Hello";
CString cs1=cs0;
the cs0 and cs1 share same memory.
CString cs0=5; is also a truble.
I suspect about operator == of CString.
If you change code to
if(m_Type.Compare("XXX")==0)
things shoud be fine.
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Hi
It isn't the case, because I did run the debug & it went into each case as I wanted. I also did try with the number instead & the result is the same
- The symtom is weird (please try yourself):
. The pointer did change but not the way I wanted
. Also it appeared different shape between the Desktop & inside any text document
*) I suspect it is mixed-up in the memory (the previous one & the new one), but I don't know how to fix it!
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Is the m_Type variable a CString as suspected by includeh10.
If it is not, what type is it?
If it is a character array, you will need to use the strcmp or wcscmp functions depending on whether the build is UNICODE or NON-UNICODE.
If it is a CString and the build is UNICODE you have to do the comparison as if (m_Type == L"ARROW").
Ideally m_Type must be an integer variable and all types must be #defined like -
#define ARROW 1<br />
#define ALLSIZE 2<br />
etc.
«_Superman_»
I love work. It gives me something to do between weekends.
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Hi
It isn't the case, because I did run the debug & it went into each case as I wanted. I also did try with the number instead & the result is the same
- The symtom is weird (please try yourself):
. The pointer did change but not the way I wanted
. Also it appeared <u>different shape</u> between the Desktop & inside any text document
*) I suspect it is mixed-up in the memory (the previous one & the new one), but I don't know how to fix it!
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On further reading the documentation carefully, I found that LoadCursor is the problem.
Here is a snippet from the documentation -
The system destroys hcur by calling the DestroyCursor function. Therefore, hcur cannot be a cursor loaded using the LoadCursor function. To specify a cursor loaded from a resource, copy the cursor using the CopyCursor function, then pass the copy to SetSystemCursor.
«_Superman_»
I love work. It gives me something to do between weekends.
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