C / C++ / MFC

class Cloneable
{
	public:
		template<class TYPE> TYPE* clone_as() const { return dynamic_cast< TYPE* > ( clone() ); }
		virtual Cloneable* clone() const = 0;
};

int main()
{
    X x( 7 );
    Cloneable *p = &x;

    Y *py = p->clone_as<Y>();
}

class base
{
    public:
		virtual void do_something( int ) { std::cout << "Doing the base class int thing" << std::endl; }
		virtual void do_something( double ) { std::cout << "Doing the base class double thing" << std::endl; }
};

class derived : public base
{
    public:
		virtual void do_something( double )  { std::cout << "Doing the derived class double thing" << std::endl; }
};

int main()
{
	derived d;
	d.do_something( int( 7 ) );
}

class X : public Cloneable
{
      virtual X* clone() const { return new X(data); }
};

class Y : public X
{
      virtual Y* clone() const { return new Y(dataf, data); }
};

int main(int argc, char* argv[]) 
{            
      X* x = new X(1);
      X* x1 = x->clone();

      Y* y = new Y(2.12, 4);
      Y* y1 = y->clone();

      return 0;
}

class ClonerUtility {

 template <class TCoVariantClonable>
 static std::auto_ptr<TCoVariantClonable> CloneAs(const Clonable& pToBeCloned) {
  std::auto_ptr<Clonable> tClone(pToBeCloned.clone());
  if (TCoVariantClonable* tCoVariantClone = 
   dynamic_cast<TCoVariantClonable*>(tClone.get())) {
    tClone.reset(0);
    return std::auto_ptr<TCoVariantClonable>(tCoVariantClone);
  }
  return std::auto_ptr<TCoVariantClonable>();
 }

 template<class TCoVariantClonable>
 static std::auto_ptr<TCoVariantClonable> Clone(const TCoVariantClonable& pToBeCloned) {
  return std::auto_ptr<TCoVariantClonable>(pToBeCloned.clone());
 }
};

//
int main(int argc, char* argv[]) 
{  
 std::auto_ptr<X> tX(new X);
 std::auto_ptr<X> tCloneX = ClonerUtility::Clone(*tX);

 Clonable& tPureClonable = *tCloneX;
 std::auto_ptr<X> tOtherCloneOfX = ClonerUtility::CloneAs<X>(tPureClonable);
}

//    BOOL bCreated = this->CreateEx( 0, cstrWndClassName,
//        L"CMessageOnlyWindow", 0, 0, 0, 0, 0, HWND_MESSAGE, 0 );
    BOOL bCreated = this->CreateEx( 0, cstrWndClassName,
        L"CMessageOnlyWindow", -1000, -1000, 100, 100, 0, HWND_MESSAGE, 0 );

<br />
m_pPosition = (1000000 * (LONGLONG)millisecond) / 100;<br />
hr = m_pSeeking->SetPositions(&m_pPosition, AM_SEEKING_AbsolutePositioning, &m_pStop, AM_SEEKING_AbsolutePositioning);<br />
if (FAILED(hr))                 <br />
        return -2;<br />
hr = m_pSeeking->GetCurrentPosition(&m_pPosition);<br />
if (FAILED(hr))                 <br />
        return -3;<br />

<br />
hr = m_pMC->Run();<br />
if (FAILED(hr)) <br />
        return -2;                <br />
long evCode;<br />
//! wait for completion<br />
hr = m_pEvent->WaitForCompletion(m_TimeOut, &evCode);<br />
if (FAILED(hr)) <br />
        return -3;<br />
//! sample grabber does not stop the graph even it is set with one shot mode<br />
hr = m_pMC->Stop();<br />
if (FAILED(hr)) <br />
        return -4;<br />
//! grab frame<br />
hr = m_pGrabber->GetCurrentBuffer((long *)&m_BmiHeader.biSizeImage, (long *)pFrameData);<br />
if (FAILED(hr))<br />
        return -5;<br />

Chesnokov Yuriy wrote:

But with SetOneShot false WaitForCompletion returns 0x80004004 if wait interval is specified or never returns with INFINITE wait period

federico.strati wrote:

otherwise I'll just feel somebody thinks me to be so stupid to don't search before asking !!!

federico.strati wrote:

Oh well, I just know I'll end up as always writing my own little app exploring all available options of the CTreeCtrl just for fun in learning...

federico.strati wrote:

you have just to assume what you would do in the first place, like an "I wouldn't do that,
wouldn't I?" ...

federico.strati wrote:

Oh well, I just know I'll end up as always writing my own little app exploring all available options of the CTreeCtrl just for fun in learning...

federico.strati wrote:

Oh well, I just know I'll end up as always writing my own little app exploring all available options of the CTreeCtrl just for fun in learning...

grazie comunque

Microsoft wrote:

The CMNCTRL1 sample illustrates how to use the following common control MFC classes: CTreeCtrl, CToolBarCtrl, CAnimateCtrl, CDateTimeCtrl, and CMonthCalCtrl. It shows how the controls are created and how to change the controls using many of the different available styles. Some controls cover topics that often yield questions from the user; for example, the drag and drop implementation for CTreeCtrl.

federico.strati wrote:

but I did already my bit in searching the articles first...

federico.strati wrote:

neededless to say, giving an answer in search form is a bit pointless