DLL file error

[pusak82]

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

// 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

// 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

[ovidiucucu]

Is AKMAL_DATA_API somewhere defined?

[pusak82]

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

this is the file AkmalDataDefs.def

#pragma once

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

Is it right???

[cilu]

this is the file AkmalDataDefs.def

Did you mean AkmalDataDefs.h?

[Gunaamirthavelu]

#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.

[pusak82]

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.

[Andreas Masur]

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

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

[John E]

This error might be significant....

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

[pusak82]

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

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...

[Gunaamirthavelu]

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

[pusak82]

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..

[John E]

#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:-

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

[pusak82]

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...

[John E]

Glad to be of help....