Thread: problem in calling DLL

Hello every body !

Few days back I have posted a problem regarding static variables in structure.

I have got solution for that problem.

But now I have new problem related to that.

It is as follow:

I am sending parameters from main CPP file to DLL cpp file.

But in DLL I am not able to get these parameters...

the code is as follow:

DLL file:

code:

Code:

	

//This is dll header file where structure is define

//dll.h

typedef struct{
   static char szOriginalAddress[0x100];
   static char szRecipientAddress[0x100];
  static char szFileName[0x100];
}TExternalFilter;

EXPORT DWORD MerakFilterProc(TExternalFilter*);

//This is dll.cpp

#include "dll.h"

BOOL APIENTRY DllMain( HANDLE hModule, DWORD  ul_reason_for_call, LPVOID lpReserved	 )
{
    return TRUE;
}

 char TExternalFilter::szOriginalAddress[0x100];
 char TExternalFilter::szRecipientAddress[0x100];
 char TExternalFilter::szFileName[0x100];

EXPORT DWORD MerakFilterProc(TExternalFilter*)
{		
	 char temp1[256];
	std:: string temp1;
 
  strcpy(temp1,TExternalFilter::szOriginalAddress);
  strcpy(temp2,TExternalFilter::szRecipientAddress);
 strcpy(temp3,TExternalFilter::szFileName);
}
// I am not to fetch values here

Now this DLL is called by main CPP program which is as follow:

Code:

int main(int argc, char* argv[])
{	
TExternalFilter ExternalFilter={"[email protected]","[email protected]","sdfsd"};	


	ch = MerakFilterProc(&ExternalFilter);	
	
}
//This program call DLL and value return by DLL is recieved in ch
//but this is not working

Onething I want to clear that when I used char in place of static char then no

problem there,but I need solution with static char only.

so please help me..

Thanks
Bhagwat

Hi marof!

I will like to remove your doubt.

marof, I am developing a application in VC++ for mail server.

In this we have to put the member of structure as static.

Now the mail server call this DLL and member are pass as parameter.

I am facing the problem that as these member are static and when I pass these member

are passed to DLL they are initilize to nothing in DLL an value are lost.

I just want that to known that I how can I reterive values of without changing DLL

structure.

One thing I want to say that I can't change the DLL structure.


If you have any solutiom then please reply.

Thanks
Bhagwat