C / C++ / MFC

CWnd wnd;
BOOL bRet = wnd.CreateControl(_T("WMPlayer.OCX"), NULL, WS_VISIBLE, rect, this, 19089);

return TRUE;  // return TRUE  unless you set the focus to a control

TRUE

wnd 

NULL

Falconapollo wrote:

I run the code wich VC++ 6.0, everything is OK. But when run the same code under Visual C++ 2010, the handle of

C++

wnd

(namely

C++

m_hWnd

) is always NULL.

ClassName* obj1; // pointer to object of a class

AmbiguousName wrote:

I don't wan to change it.

void AssignValue(ClassName* ptrValue)
  {
    ClassName& localObject = *ptrValue;// Here local object is created with same members of ptrValue
    obj1 = localObject; // here = operator will work, and copy all members to your new instance obj1.
  }

const ClassName& localObject = *ptrValue;

obj = *ptrValue;

class foo {
int val;
public:
   foo(int v) : val(v) {}
   int get() const { return val;}
};
class ABC {
   foo obj1;
public:
   void AssignValue(foo* ptr) {
      obj1 = *ptr;
   }
};