Create General Object From DLL.

// the GUI is a GUI.DLL

// GUI.h


typedef IuGUI* (*LPFN_CREATEGUI)(void);

GUI_API IuGUI* CreateObject(void);

GUI_API IuGUI* CreateObject(void)
{
    return new CuGUI;
}

// CuGUI

class CuGUI :
    public IuGUI
{
public:
    CuGUI(void);
    ~CuGUI(void);

     virtual ULONG Release() 
     { 
        delete this;
        return 0;
     }

    virtual void OnDraw(HDC hDC);
};

// CGUILoadTest

void CGUILoadTest::testDllCreateObject(void)
{

    LPFN_CREATEGUI lpfnCreateGUI = NULL;

    CuDllManager dllGUI;
    BOOL bResult = dllGUI.LoadLibrary(TEXT("GUI.dll"));
    CPPUNIT_ASSERT( bResult != NULL );

    lpfnCreateGUI = (LPFN_CREATEGUI)dllGUI.GetProcAddress(("CreateObject"));
    CPPUNIT_ASSERT( lpfnCreateGUI != NULL );

    IuGUI *pIuGUI = NULL;

    if( lpfnCreateGUI != NULL )
        pIuGUI = lpfnCreateGUI();

    CPPUNIT_ASSERT( pIuGUI != NULL );

    if( pIuGUI != NULL )
        pIuGUI->Release();

}