Если у вас возникли сложности с курсовой, контрольной, дипломной, рефератом, отчетом по практике, научно-исследовательской и любой другой работой - мы готовы помочь.
Предоплата всего
Подписываем
// 1B.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include "iostream.h"
#include "objbase.h"
#include "conio.h"
void trace(const char* msg) { cout << msg << endl; }
// Ïðåäâàðèòåëüíûå îïèñàíèÿ GUID
extern const IID IID_IX;
extern const IID IID_IY;
extern const IID IID_IZ;
// Èíòåðôåéñû
interface IX : IUnknown
{
virtual void __stdcall Fx() = 0;
};
interface IY : IUnknown
{
virtual void __stdcall Fy() = 0;
};
interface IZ : IUnknown
{
virtual void __stdcall Fz() = 0;
};
// Êîìïîíåíò
class CA : public IX, public IY
{
// Ðåàëèçàöèÿ IUnknown
virtual HRESULT __stdcall QueryInterface(const IID& iid, void** ppv);
virtual ULONG __stdcall AddRef();
virtual ULONG __stdcall Release();
// Ðåàëèçàöèÿ èíòåðôåéñà IX
virtual void __stdcall Fx() { cout << "Fx" << endl; }
// Ðåàëèçàöèÿ èíòåðôåéñà IY
virtual void __stdcall Fy() { cout << "Fy" << endl; }
public:
// Êîíñòðóêòîð
CA() : m_cRef(0) {}
// Äåñòðóêòîð
~CA() { trace("CA: Likvidirovat' seby"); }
private:
long m_cRef;
};
HRESULT __stdcall CA::QueryInterface(const IID& iid, void** ppv)
{
if (iid == IID_IUnknown)
{
trace("CA QI: Vozvratit' ykazateel na IUnknown");
*ppv = static_cast<IX*>(this);
}
else if (iid == IID_IX)
{
trace("CA QI: Vozvratit' ykazateel na IX");
*ppv = static_cast<IX*>(this);
}
else if (iid == IID_IY)
{
trace("CA QI:Vozvratit' ykazateel na IY");
*ppv = static_cast<IY*>(this);
}
else
{
trace("CA QI: Interface No!");
*ppv = NULL;
return E_NOINTERFACE;
}
reinterpret_cast<IUnknown*>(*ppv)->AddRef();
return S_OK;
}
ULONG __stdcall CA::AddRef()
{
cout << "CA: AddRef = " << m_cRef+1 << endl;
return InterlockedIncrement(&m_cRef);
}
ULONG __stdcall CA::Release()
{
cout << "CA: Release = " << m_cRef-1 << endl;
if (InterlockedDecrement(&m_cRef) == 0)
{
delete this;
return 0;
}
return m_cRef;
}
//
// Ôóíêöèÿ ñîçäàíèÿ
//
IUnknown* CreateInstance()
{
IUnknown* pI = static_cast<IX*>(new CA);
pI->AddRef();
return pI;
}
//
// IID
//
// {32bb8320-b41b-11cf-a6bb-0080c7b2d682}
static const IID IID_IX =
{0x32bb8320, 0xb41b, 0x11cf,
{0xa6, 0xbb, 0x0, 0x80, 0xc7, 0xb2, 0xd6, 0x82}};
// {32bb8321-b41b-11cf-a6bb-0080c7b2d682}
static const IID IID_IY =
{0x32bb8321, 0xb41b, 0x11cf,
{0xa6, 0xbb, 0x0, 0x80, 0xc7, 0xb2, 0xd6, 0x82}};
// {32bb8322-b41b-11cf-a6bb-0080c7b2d682}
static const IID IID_IZ =
{0x32bb8322, 0xb41b, 0x11cf,
{0xa6, 0xbb, 0x0, 0x80, 0xc7, 0xb2, 0xd6, 0x82}};
//
// Êëèåíò
//
int main()
{
HRESULT hr;
trace("Client: Polychit' ykazatel IUnknown");
IUnknown* pIUnknown = CreateInstance();
trace("Client: Polychit' Interface IX");
IX* pIX = NULL;
hr = pIUnknown->QueryInterface(IID_IX, (void**)&pIX);
if (SUCCEEDED(hr))
{
trace("Client: IX polychen");
pIX->Fx(); // Èñïîëüçîâàòü èíòåðôåéñ IX
pIX->Release();
}
trace("Client: Polychit' Interface IY");
IY* pIY = NULL;
hr = pIUnknown->QueryInterface(IID_IY, (void**)&pIY);
if (SUCCEEDED(hr))
{
trace("Client: IY polychen");
pIY->Fy(); // Èñïîëüçîâàòü èíòåðôåéñ IY
pIY->Release();
}
trace("Client: Zaprosit' nepodderjivaemue Interface");
IZ* pIZ = NULL;
hr = pIUnknown->QueryInterface(IID_IZ, (void**)&pIZ);
if (SUCCEEDED(hr))
{
trace("Client: Interface IZ polychen");
pIZ->Fz();
pIZ->Release();
}
else
{
trace("Client: No! Interface IZ");
}
trace("Client: Osvobodit' Interface IUnknown");
pIUnknown->Release();
getch();
return 0;
}