C / C++ / MFC

#ifndef CONSUMER_H
#define CONSUMER_H

#include <afx.h>
#include <afxwin.h>
#include <set>
using namespace std;

typedef set<CWnd*> ObserverListConsumerDef;

#include "ThreadMessages.h"

class CConsumer
{
public:
   CConsumer(void);
   virtual ~CConsumer(void);

// Thread Interface
public:
   bool Start(void); // Start the thread
   bool Stop (void) { m_bStop = true; return true; } // Stop  the thread
   bool Abort(void); // Stop the thread (brute force kill it)
   bool WaitForThread(DWORD dwWait); // Wait the thread to signal, i.e. to end
   // dwWait in milliseconds or INFINITE
   bool IsRunning() { return m_bIsRunning; }; // Is the thread running
   bool IsSuccess() { return m_bSuccess; }; // Was the run successful ?
   virtual bool Execute() = 0; // Override to provide functionality

// the thread itself
protected:
   static UINT ThreadFunc(LPVOID pVoid)
   {
      return( ((CConsumer*) pVoid)->LocalThreadFunc() );
   }

   UINT LocalThreadFunc(void);
   bool  m_bIsRunning;
   bool  m_bSuccess;
   bool  m_bStop;
   CWinThread* m_pThread;
   HANDLE      m_hThread;

// Observer Windows
public:
   void SetObserver(CWnd *pWnd);
   void DelObserver(CWnd *pWnd);

protected:
   ObserverListConsumerDef m_ObserverList;
   void SendMessageToObs(UINT nMsg, WPARAM wP, LPARAM lP);
};

#endif  // ! defined (CONSUMER_H)

1. explicitly delete the object:
   
   C++

   CConsumer pConsumer = new CConsumer;
   ...
   // Somewhere in your code, periodically do this:
   if (!pConsumer->IsRunning())
      delete pConsumer;

2. add auto-delete feature to CConsumer:
   
   C++

   class CConsumer
   {
      ...
   
   protected:
      static UINT ThreadFunc(LPVOID pVoid)
      {
         CConsumer* pConsumer = (CConsumer*)pVoid;
         UINT retVal = pConsumer->LocalThreadFunc();
         if (pConsumer->m_bAutoDelete)
            delete pConsumer;
         return retVal;
      }
   
      BOOL m_bAutoDelete;
   
      ...
   };

overloaded Name wrote:

But compiler complains that "header.h" is not included, but it is included (in the "Header Files")

void CMyView::CheckScrollBars(BOOL& bHasHorzBar, BOOL& bHasVertBar) const
{
	DWORD dwStyle = GetStyle();

	CScrollBar* pBar = GetScrollBarCtrl(SB_VERT);
	bHasVertBar = ((pBar != NULL) && pBar->IsWindowEnabled()) || (dwStyle & WS_VSCROLL);

	pBar = GetScrollBarCtrl(SB_HORZ);
	bHasHorzBar = ((pBar != NULL) && pBar->IsWindowEnabled()) || (dwStyle & WS_HSCROLL);
}