Exposing functions with STDAPI

[Milby7]

Hi!
I'm trying to learn how to write com component servers (dll's) using plain c++ (no mfc, or atl) & am having trouble exposing the necessary functions - DllRegisterServer, DllUnregisterServer, DllCanUnloadNow, & DllGetClassObject prefixing each with STDAPI. I read somewhere on MSDN that you have to add a preprocessor directive or a compiler switch for STDAPI to expose functions, but it didn't actually say what they are. I'd really rather not use a .def file, but @ the moment I'm REALLY stuck without one!
If anyone could help I'd really appreciate it! :

 

[obislavu]

MyComApp.h
**********


#include "resource.h"       // main symbols

/////////////////////////////////////////////////////////////////////////////
// MyCOMApp : See IMCOM.cpp for implementation.

class MyCOMApp : public COleControlModule
{
public:
	BOOL InitInstance();
	int ExitInstance();
};

extern const GUID CDECL _tlid;
extern const WORD _wVerMajor;
extern const WORD _wVerMinor;

MyCOMApp.cpp
************

// IMCOM.cpp : Implementation of MyCOMApp and DLL registration.

#include "stdafx.h"
#include "MyCOMApp.h"

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


MyCOMApp NEAR theApp;

const GUID CDECL BASED_CODE _tlid =
		{ 0xf9cbace3, 0x5969, 0x11d4, { 0x82, 0x8a, 0, 0xc0, 0xa8, 0x47, 0xd5, 0x28 } };
const WORD _wVerMajor = 1;
const WORD _wVerMinor = 0;


////////////////////////////////////////////////////////////////////////////
// MyCOMApp::InitInstance - DLL initialization

BOOL MyCOMApp::InitInstance()
{
	BOOL bInit = COleControlModule::InitInstance();

	if (bInit)
	{
		// TODO: Add your own module initialization code here.
	}

	return bInit;
}


////////////////////////////////////////////////////////////////////////////
// MyCOMApp::ExitInstance - DLL termination

int MyCOMApp::ExitInstance()
{
	// TODO: Add your own module termination code here.

	return COleControlModule::ExitInstance();
}


/////////////////////////////////////////////////////////////////////////////
// DllRegisterServer - Adds entries to the system registry

STDAPI DllRegisterServer(void)
{
	AFX_MANAGE_STATE(_afxModuleAddrThis);

	if (!AfxOleRegisterTypeLib(AfxGetInstanceHandle(), _tlid))
		return ResultFromScode(SELFREG_E_TYPELIB);

	if (!COleObjectFactoryEx::UpdateRegistryAll(TRUE))
		return ResultFromScode(SELFREG_E_CLASS);

	return NOERROR;
}


/////////////////////////////////////////////////////////////////////////////
// DllUnregisterServer - Removes entries from the system registry

STDAPI DllUnregisterServer(void)
{
	AFX_MANAGE_STATE(_afxModuleAddrThis);

	if (!AfxOleUnregisterTypeLib(_tlid, _wVerMajor, _wVerMinor))
		return ResultFromScode(SELFREG_E_TYPELIB);

	if (!COleObjectFactoryEx::UpdateRegistryAll(FALSE))
		return ResultFromScode(SELFREG_E_CLASS);

	return NOERROR;
}

-obislavu-

 

[Milby7]

Hi obislavu!
Thanks for your help, but I can't seem to make sense of why my functions aren't being made available to calling exe's. I've built a debug version of my test project but when I try to register it with regsvr32.exe I get the following message:
"c:\dev\dll_test\Debug\dll_test.dll was loaded, but the DllRegisterServer entry point was not found.
This file can not be registered."
As far as I can see, my implementation of DllRegisterServer should work. Am I missing something?

// main.cpp

#define _CTEST_EXTERN_  // define external declarations in ctest.h

#include <windows.h>
#include <cregister.h>	// com registration class

#include &quot;ctest.h&quot;

STDAPI DllCanUnloadNow()
{
        // source code
}

STDAPI DllGetClassObject(const CLSID& clsid, const IID& iid, void** ppv)
{
	// source code
}

STDAPI DllRegisterServer()
{
	// source code
}

STDAPI DllUnregisterServer()
{
	// source code
}

BOOL APIENTRY DllMain(HANDLE hModule, DWORD dwReason, void* lpReserved)
{
	// source code 
}