C / C++ / MFC

class Restricted
{
public:
   Restricted()
   {
      if (instances==3) throw SomeException();
      instances++;
   }
   ~Restricted()
   {
      instances--;
   }
private:
   static int instances;
};

// In the class's .cpp file, 

int Restricted::instances = 0;

class resritct
{
 public:
 restrict(){}
 void show(){ cout<<"restricted class"; }
};
void main()
{
 // Here I am writing for restricting the object creation.
 //object genration
 for(int i=0;i<3;i++)
  {
   resrict r;
   r.show();
  }
 }

Elsie wrote:

I want to tile the 4 dialogs in the window, in my MFC application

<br />
// new a child dialog from the heap memory<br />
CRect rect;<br />
CChildDlg *pDlg=new CChildDlg();<br />
 <br />
// create a child dialog,and get the window rect.<br />
pDlg->Create(IDD_ChildDlg,NULL);<br />
pDlg->GetWindowRect(rect);<br />
 <br />
// move it to point x =10, y =20<br />
pDlg->MoveWindow(10,20,rect.bottom,rect.left,TRUE);<br />
 <br />
// show and update the child window<br />
pDlg->ShowWindow(SW_SHOWNORMAL);<br />
pDlg->UpdateWindow();<br />
pDlg = NULL;<br />