About Dll implementation in big project

A simple solution is to just add your dll directory to the system path.

Ok there are a number of issues with your approch.

1. You stated that the number of dlls have increased. I have it is not by magnitude. Maybe you have created a bunch of them, not more.
2. Please don't install your dlls into System files. That is not the solution and you will run into a problem.
3. I don't understand what is the issue placing your dlls with your .exe file. Not only it simplifies your install it will prevent you from headaches down the line.
4. Finally, if you want to install then in separate folder, I want you to ask yourself why does it work if your put it in the system directory. The simple answer is because it is in the search path. When your dll needs to be loaded there are a number of places the loader looks before it gives up.

So, the short answer is you need to add the folder in which your dll resides into the system path.

Open command window and type path. what do you see? that is your secret ingredient. Your install needs to append the full path into the PATH

Respected all

Here I want more modulation in project.

when i tries my project on PC that doesn't have visualstudio.then we must add All required dll of the Visualstudio like
msvcr71.dll,msvcp71d.dll etc.
but i want to keep my dll in saparate folder.
please provide any method that runs on
windowserver 2003
and Visual studio 2003
used of RegSvr32.exe not uderstand.

I think you should load the dlls by your own.
Take a look:

unsigned int scopy(TCHAR* dst,const unsigned int len,const unsigned int pos,const TCHAR* cat)
{
  unsigned int  i,n = min(len-1,pos+_tcslen(cat));
  for(i=pos;i<len;i++) dst[i]=cat[i-pos]; dst[i]=0;
  return i;
}

HINSTANCE DllLoad(const TCHAR* dll,const TCHAR* dllpath=__TEXT("DLL\\"))
{
  TCHAR          mod[MAX_PATH];
  unsigned int  len = GetModuleFileName(__hinst,mod,sizeof(mod)/sizeof(mod[0]));
  for(;(0<len)&&('\\'!=mod[len-1]);len--);
  len = scopy(mod,sizeof(mod)/sizeof(mod[0]),len,dllpath);
  len = scopy(mod,sizeof(mod)/sizeof(mod[0]),len,dll);
  return LoadLibrary(mod);
}

int FAR PASCAL WinMain(HINSTANCE h,HINSTANCE p,LPSTR c,int sw)
{
  __hinst = h;

  HINSTANCE  hdll = DllLoad(__TEXT("first.dll"));
  if(32<(unsigned int)hdll)
  {
    void (FAR PASCAL *myfunc)() = (void (FAR PASCAL *)())GetProcAddress(hdll,"first_func");
    myfunc();
    FreeLibrary(hdll);
  }
  return 42;
}

Hey,
May I know the reason for the seperate folder for dlls. You better add the dll's in your exe folder or to the system folder. Or I shall say a method which I think may be of some help to you.
Try the following steps:

HINSTANCE hDLL = AfxLoadLibrary(Path Name);
lpLoadDll = (LPLOADDLL) GetProcAddress ( hDLL, Fn Name);
lpLoadDll();
AfxFreeLibrary(hDLL);

Hi santoshmaruti,

If you are placing all the dll in System32 or Application folder it will work fine as you said, because your application exe will find that dll in this folder. ( By default your application exe will search required dll in your application folder and System32 folder)

But,If you are placing required Dll into seprate file then you have to register them using RegSvr32.exe. So your application will get the required dll.

I recommend you to register all require dll in last phase of application installation.