C / C++ / MFC

ProcessObject( int objCode  )
{
   A* a = NULL;
   switch (objCode)
   {
       case 0: 
         a = new whatever0;
         break;
       case 1: 
         a = new whatever1;
         break;
       etc..
   }
   a->Foo();
}

class whatever0 : public A
{
  static public whatever0 * Create()
  {
     return new whatever0();
  }
  ...
};
class whatever1 : public A
{
  static public whatever1 * Create()
  {
     return new whatever1();
  }
  ...
};

...

OBJ_TYPE objTable[] = 
{
  {0, whatever0::Create},
  {1, whatever1::Create},
};

... where OBJ_TYPE is a struct with an int and a function pointer that returns an A* 

RomTibi wrote:

I have a Doialog Box containing a Progress Bar to show the progress of the longer operations.

RomTibi wrote:

No such source.

RomTibi wrote:

I tryed to use MSDN

#define PUMP_MESSAGES {MSG Msg; while(::PeekMessage(&Msg,NULL,0,0,PM_REMOVE) != 0) {::TranslateMessage(&Msg); ::DispatchMessage(&Msg);}}

for (i = 0; i <= 999; i++)
{
  PUMP_MESSAGES
  //below some code that takes some time to complete
  //and loops 1000 times 
  ...
  ...
}