Loading a .dll in ActiveX

From:

=?Utf-8?B?cmJpY2tlcnQ=?= <rbickert@discussions.microsoft.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Thu, 3 Apr 2008 07:29:01 -0700

Message-ID:

<319901BE-73D1-4BF2-B0F3-50DFB9A7C7DC@microsoft.com>

I'm currently attempting to successfully wrap a dll with an activex ocx. So
far it has gone well and I have compiled my program, which is quite large.
When I attempt to run the ocx is the Test Container, I get a "Failed to
create control:Unspecified error" message. I'm assuming it has to do with how
I implement the dll. I have tried two ways, which are listed below.

============================================================
BOOL CActiveXPropPage::OnInitDialog()
{
    CDialog::OnInitDialog();

// Load the DLL library

m_hLib = LoadLibraryW
((LPCWSTR)"..\\..\\DAPassThru\\Debug\\DAPassThru.dll");
if( m_hLib || (m_hLib = (LoadLibraryW((LPCWSTR)"DAPassThru.dll")) ) )
{
    if( !LoadProcs() ) // Load the DLL
entry points
        WriteDebugString("Could NOT get all proc addresses");

    if( m_DADllVersion )
        m_DADllVersion( &m_DAMajor, &m_DAMinor, &m_DARelease );

// outputDebug("Loaded DAPassThruDll Version %d.%d.%d", m_DAMajor,
m_DAMinor, m_DARelease);

    if( m_DAOpen )
        m_DAOpen( &m_hDA, &m_uFlags, &CallBack, NULL );

// outputDebug("Opened DAPassThruDll with %d flags", m_uFlags);

// updateMenus( m_uFlags );

    if( m_DASetDebug )
        m_DASetDebug( TRUE );
}
else return 0;
==========================================================

and

==========================================================
BOOL CActiveXApp::InitInstance()
{
    BOOL bInit = COleControlModule::InitInstance();
// m_hButtonControl = NULL;
    if (bInit)
    //Loading the .dll 'cause its a ***!
        m_hButtonControl= ::LoadLibrary( _T( "dapassthru.dll" ));
    return bInit;

    if (m_hButtonControl == NULL)
    {
        return bInit;
    }
}
=========================================================

Is there a better way to load a dll? Both methods compile, but I still get
the same error message. The dll is also located in the same directory as the
ocx when I run it. Could it be possible that it is due to something else? Any
help would be greatly appreciated. Thanks guys.