This  page is in Pre Alpha. That means no grammer checks,
no editting and speeling mistakes galore! The explanations and the final version
will come soon . Check it out at your own risk!

a.bat

cl.exe /c minimal.cpp
link.exe /dll /def:minimal.def /out:minimal.dll minimal.obj

b.bat

del z.txt
c:\msdev\samples\atl\minimal\mindriv\mindriv

a1.bat

cl.exe /D _CONSOLE  /c mindriv.cpp
link.exe kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console  /machine:I386 mindriv.obj

first.cpp

#include <atlbase.h>
CComModule _Module;
#include <atlcom.h>
#include <stdio.h>
void abc(char *p){FILE *fp=fopen("c:\\msdev\\samples\\atl\\minimal\\z.txt","a+");fprintf(fp,"%s\n",p);fclose(fp);}
STDMETHODIMP CComClassFactory::CreateInstance(LPUNKNOWN pUnkOuter,REFIID riid, void** ppvObj)
{
abc("CComClassFactory::CreateInstance");
m_pfnCreateInstance(pUnkOuter, riid, ppvObj);
return 0;
}
STDMETHODIMP CComClassFactory::LockServer(BOOL fLock){	return S_OK;}
ATLAPI AtlInternalQueryInterface(void* pThis,
	const _ATL_INTMAP_ENTRY* pEntries, REFIID iid, void** ppvObject)
{
abc("AtlInternalQueryInterface");
*ppvObject = (IUnknown*)((int)pThis+pEntries->dw);
return S_OK;
}
#include <initguid.h>
DEFINE_GUID(IID_IMinObj,0xA4E6EAE8, 0xE19A, 0x11CF, 0x92, 0x03, 0x00, 0xA0, 0xC9, 0x03, 0x97, 0x6F);
DEFINE_GUID(CLSID_CMinObj,0xA4E6EAEC, 0xE19A, 0x11CF, 0x92, 0x03, 0x00, 0xA0, 0xC9, 0x03, 0x97, 0x6F);
interface IMinObj : public IUnknown
{
public:
STDMETHOD(Hello)() = 0 ;
};
class CMinObj:public IMinObj,public CComObjectRoot,
                public CComCoClass<CMinObj,&CLSID_CMinObj>
{
public:
BEGIN_COM_MAP(CMinObj)
COM_INTERFACE_ENTRY(IMinObj)
END_COM_MAP()
DECLARE_NO_REGISTRY() 
public:
STDMETHOD(Hello)()
{ 
abc("Hello");
return S_OK;
}
};
BEGIN_OBJECT_MAP(ObjectMap)
OBJECT_ENTRY(CLSID_CMinObj, CMinObj)
END_OBJECT_MAP()
extern "C" BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID)
{
if (dwReason == DLL_PROCESS_ATTACH)
_Module.Init(ObjectMap,hInstance);
return TRUE;
}
STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv)
{
return _Module.GetClassObject(rclsid, riid, ppv);
}
ATLAPI AtlModuleInit(_ATL_MODULE* pM, _ATL_OBJMAP_ENTRY* p, HINSTANCE h)
{
abc("AtlModuleInit");
pM->m_pObjMap = p;
pM->m_hInst = pM->m_hInstTypeLib = pM->m_hInstResource = h;
return S_OK;
}
ATLAPI AtlModuleGetClassObject(_ATL_MODULE* pM, REFCLSID rclsid, REFIID riid, LPVOID* ppv)
{
abc("AtlModuleGetClassObject");
_ATL_OBJMAP_ENTRY* pEntry = pM->m_pObjMap;
pEntry->pfnGetClassObject(pEntry->pfnCreateInstance,IID_IUnknown,(LPVOID*)&pEntry->pCF);
pEntry->pCF->QueryInterface(riid, ppv);
return 0;
}


mindriv.cpp

#include <stdio.h>
#include <windows.h>
#include <tchar.h>
#include <crtdbg.h>
#include <initguid.h>
DEFINE_GUID(IID_IMinObj,0xA4E6EAE8, 0xE19A, 0x11CF, 0x92, 0x03, 0x00, 0xA0, 0xC9, 0x03, 0x97, 0x6F);
DEFINE_GUID(CLSID_CMinObj,0xA4E6EAEC, 0xE19A, 0x11CF, 0x92, 0x03, 0x00, 0xA0, 0xC9, 0x03, 0x97, 0x6F);
interface IMinObj : public IUnknown
{
public:
virtual void _stdcall Hello() = 0 ;
};
int main( int argc, char *argv[ ])
{
CoInitialize(NULL);
IUnknown* pUnk;IMinObj* pMin;
CoCreateInstance(CLSID_CMinObj,0,CLSCTX_INPROC_SERVER,IID_IUnknown,(void**)&pUnk);
pUnk->QueryInterface(IID_IMinObj, (LPVOID*)&pMin);
pMin->Hello();
}

minimal.reg
REGEDIT
HKEY_CLASSES_ROOT\Minimal.MinObj = MinObj Class
HKEY_CLASSES_ROOT\Minimal.MinObj\CLSID = {A4E6EAEC-E19A-11CF-9203-00A0C903976F}
HKEY_CLASSES_ROOT\Minimal.MinObj.1 = MinObj Class
HKEY_CLASSES_ROOT\Minimal.MinObj.1\CLSID = {A4E6EAEC-E19A-11CF-9203-00A0C903976F}
HKEY_CLASSES_ROOT\CLSID\{A4E6EAEC-E19A-11CF-9203-00A0C903976F} = MinObj Class
HKEY_CLASSES_ROOT\CLSID\{A4E6EAEC-E19A-11CF-9203-00A0C903976F}\InprocServer32 = c:\msdev\samples\atl\minimal\minimal.dll
HKEY_CLASSES_ROOT\CLSID\{A4E6EAEC-E19A-11CF-9203-00A0C903976F}\ProgID = Minimal.MinObj.1
HKEY_CLASSES_ROOT\CLSID\{A4E6EAEC-E19A-11CF-9203-00A0C903976F}\VersionIndependentProgID = Minimal.MinObj

second.cpp

#include <atlbase.h>
CComModule _Module;
#include <atlcom.h>
#include <atlimpl.cpp>
#include <initguid.h>
DEFINE_GUID(IID_IMinObj,0xA4E6EAE8, 0xE19A, 0x11CF, 0x92, 0x03, 0x00, 0xA0, 0xC9, 0x03, 0x97, 0x6F);
DEFINE_GUID(CLSID_CMinObj,0xA4E6EAEC, 0xE19A, 0x11CF, 0x92, 0x03, 0x00, 0xA0, 0xC9, 0x03, 0x97, 0x6F);
interface IMinObj : public IUnknown
{
public:
STDMETHOD(Hello)() = 0 ;
};
class CMinObj:public IMinObj,public CComObjectRoot,
                public CComCoClass<CMinObj,&CLSID_CMinObj>
{
public:
BEGIN_COM_MAP(CMinObj)
COM_INTERFACE_ENTRY(IMinObj)
END_COM_MAP()
DECLARE_NO_REGISTRY() 
public:
STDMETHOD(Hello)()
{ 
MessageBox(0,"bye","hii",0);
return S_OK;
}
};
BEGIN_OBJECT_MAP(ObjectMap)
OBJECT_ENTRY(CLSID_CMinObj, CMinObj)
END_OBJECT_MAP()
extern "C" BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID)
{
if (dwReason == DLL_PROCESS_ATTACH)
_Module.Init(ObjectMap, hInstance);
return TRUE;
}
STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv)
{
return _Module.GetClassObject(rclsid, riid, ppv);
}