DLL file error

Dear all

I'm learning about dll in MFC from my workplace. This dll was created by senior programmer. I try learn this dll and write it back into the new one.

But, when I compile 1 file. I have a lot of error even it is same as original.

this is header file

Code:

---

// Book.h : interface of the CBook class

#pragma once

#include "MawarCore\MawarFlit\FBSocket.h"
#include "MawarCore\MawarCtrl\DataBitmap.h"
#include "MawarCore\MawarFlit\Card.h"
#include "AkmalDataDefs.h"

class AKMAL_DATA_API CBook : public CCard
{
public:
        int                m_PictureID;
        int                m_BookAttr;
        int                m_Reserved[20];

public:
        // function
        CBitmapBin* GetBitmap(CFBSocket* pEmpSock, CRecordHnd* phBuff);
        bool DeleteBitmap(CFBSocket* pEmpSock);

public:
        CBook(void);
        ~CBook(void);
};

---

and this is .cpp file

Code:

---

// Book.cpp : implementation of the CBook class

#include "StdAfx.h"
#include "Book.h"

/////////////////////////////////////////////////////////////////////////////////
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

/////////////////////////////////////////////////////////////////////////////////
// construction/destruction
/////////////////////////////////////////////////////////////////////////////////

CBook::CBook(void)
{
}

CBook::~CBook(void)
{
}

CBitmapBin* CBook::GetBitmap(CFBSocket* pEmpSock, CRecordHnd* phBuff)
{
        if(m_PictureID != 0)
        {
                CBitmapBin* pBin = (CBitmapBin*)pEmpSock->ReadRecord(phBuff, MRT_PICTDATA, m_PictureID);
                if(pBin != NULL)
                        return pBin;
                LogError("Missing picture........");
        }
        return NULL;
}

bool CBook::DeleteBitmap(CFBSocket *pEmpSock)
{
        if(m_PictureID != 0)
        {
                pEmpSock->ReadRecord(MRT_PICTDATA, m_PictureID);
                m_PictureID = 0;
        }
        return true;
}

---

The error is

1. error C2332: 'class' : missing tag name
2. error C2011: '__unnamed' : 'enum' type redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\PlatformSDK\Include\ShlObj.h(4476) : see declaration of '__unnamed'
3. error C2470: 'CBook' : looks like a function definition, but there is no formal parameter list; skipping apparent body
4. error C2059: syntax error : 'public'
5. error C2653: 'CBook' : is not a class or namespace name
6. warning C4508: 'CBook' : function should return a value; 'void' return type assumed
7. error C2653: 'CBook' : is not a class or namespace name
8. error C2084: function 'int CBook(void)' already has a body
c:\Documents and Settings\Rokman\My Documents\Visual Studio Projects\Akmal Project Suite\Library\Akmal-Data\Book.cpp(17) : see previous definition of 'CBook'
9. error C2653: 'CBook' : is not a class or namespace name

and a few more like the class never declare......

Can anybody explain to me what all of this error mean????

ps : I really appreciate who can explain this to me..... tq

Is AKMAL_DATA_API somewhere defined?

I think defined it already... is it we define it in Definition file right.

this is the file AkmalDataDefs.def

Code:

---

#pragma once

#ifdef _AKMAL_DATA_EXP
#define AKMAL_DATA_API __declspec(dllexport);
#else
#define AKMAL_DATA_API __declspec(dllimport);
#endif

---

Is it right???

Quote:

---

this is the file AkmalDataDefs.def

---

Did you mean AkmalDataDefs.h?

Code:

---

#pragma once

#ifdef _AKMAL_DATA_EXP
#define AKMAL_DATA_API __declspec(dllexport);
#else
#define AKMAL_DATA_API __declspec(dllimport);
#endif

---

have u include AKMAL_DATA_API header file ? try it.

Quote:

---

Originally Posted by cilu

Did you mean AkmalDataDefs.h?

---

Oppss Sorry. It's not .def

Yes, It's AkmalDataDefs.h <---Defines the entry point for the DLL application.

Even I have put this header into .cpp also cannot. You can see it in my 1st post above.

It looks like there is something wrong before the class definition...in other words...in one of the included files...

Code:

---

#include "MawarCore\MawarFlit\FBSocket.h"
#include "MawarCore\MawarCtrl\DataBitmap.h"
#include "MawarCore\MawarFlit\Card.h"

---

This error might be significant....

Quote:

---

Originally Posted by pusak82

2. error C2011: '__unnamed' : 'enum' type redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\PlatformSDK\Include\ShlObj.h(4476) : see declaration of '__unnamed'

---

The code you posted doesn't contain any symbol called __unnamed - therefore it's most likely to be getting included by one (or probably, more than one) of the included headers.

Check that you haven't got 2 header files that mutually include each other. For example, if DataBitmap.h includes Card.h, then Card.h shouldn't include DataBitmap.h

Until now I still cannot solve this prob....

Code:

---

class AKMAL_DATA_API CBook : public CCard
{
public:
        int                m_PictureID;
        int                m_BookAttr;
        int                m_Reserved[20];

public:
        // function
        CBitmapBin* GetBitmap(CFBSocket* pEmpSock, CRecordHnd* phBuff);
        bool DeleteBitmap(CFBSocket* pEmpSock);

public:
        CBook(void);
        ~CBook(void);
};

---

the error is :

c:\Documents and Settings\Rokman\My Documents\Visual Studio Projects\Akmal Project Suite\Library\Akmal-Data\Book.h(10): error C2332: 'class' : missing tag name

Can any body solve this prob, I think compiler cannot read the declaration class type....

I don't what to do right now...

http://msdn.microsoft.com/library/de...errorc2332.asp

After I study the code...

I detect the error starts is on AKMAL_DATA_API on declaration class in header file...

Any one know how to make AKMAL_DATA_API validate to use....

it's the definition file right...

ps : Sorry I just now a little about DLL file...still on a route to understand it..

Code:

---

#ifdef _AKMAL_DATA_EXP
#define AKMAL_DATA_API __declspec(dllexport);
#else
#define AKMAL_DATA_API __declspec(dllimport);
#endif

---

I don't know if that was your error or somebody else's - but you shouldn't be using semi-colons here. The correct syntax is:-

Code:

---

#ifdef _AKMAL_DATA_EXP
#define AKMAL_DATA_API __declspec(dllexport)
#else
#define AKMAL_DATA_API __declspec(dllimport)
#endif

---

Tq very much John E, ur correction make my code compile successfully...

After that, there was no error anymore....

Why I not aware of this semi colons...

Tq very much John E

ps : Next time I need to be careful write a code...

Glad to be of help.... :wave: