ATL / WTL / STL

class CMyWindow : public CWindowImpl<CMyWindow>
{
public:
    // Optionally specify name of the new Windows class
    DECLARE_WND_CLASS("MyName") 
    // If this macro is not specified in your
    // class, ATL will generate a class name

    BEGIN_MSG_MAP(CMyWindow)
        MESSAGE_HANDLER(WM_PAINT, OnPaint)
    END_MSG_MAP()

    LRESULT OnPaint(UINT nMsg, WPARAM wParam, 
    LPARAM lParam, BOOL& bHandled)
    {
        // Do some painting code
        return 0;
    }
};

//
extern "C" int WINAPI _tWinMain(HINSTANCE /*hInstance*/, HINSTANCE hPrevInstance, 
                                LPTSTR /*lpCmdLine*/, int nShowCmd)
{
#ifdef _DEBUG
    _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF);
#endif
    {
        ATLASSERT(AUX_SUCCEEDED(OleInitialize(0) == S_OK));
        AtlAxWinInit();
        //srand(GetTickCount());
        {
            //CAdvantageApp _AtlModule;

            CMyWindow w;
            w.Create(0, 0, 0, WS_OVERLAPPEDWINDOW);
            w.DestroyWindow();

            //_AtlModule.Run();
        }
        AtlAxWinTerm();
        OleUninitialize();
    }
#ifdef _DEBUG
    if (_CrtDumpMemoryLeaks())
        ::MessageBeep(MB_ICONEXCLAMATION);
#endif
}

Detected memory leaks!
Dumping objects ->
{49} normal block at 0x00944D70, 2 bytes long.
 Data: <  > DA C2 
Object dump complete.

#define WIN32
#define _WINDOWS
#define _CRTDBG_MAP_ALLOC
#define _ATL_MIN_CRT
#define _DEBUG
#include <windows.h>
//#include <stdlib.h>
//#include <crtdbg.h>
#include <comutil.h>
#include <stdio.h>
#include <tchar.h>

#include <atlbase.h>
#include <atlwin.h>

#include <windows.h>

// this code is from MSDN
// ms-help://MS.MSDNQTR.2003APR.1033/vccore/html/_atl_Implementing_a_Window_with_CWindowImpl.htm
// "Implementing a Window with CWindowImpl"
class CMyWindow : public CWindowImpl<CMyWindow>
{
public:
   // Optionally specify name of the new Windows class
   DECLARE_WND_CLASS("MyName")
              // If this macro is not specified in your
              // class, ATL will generate a class name

   BEGIN_MSG_MAP(CMyWindow)
      MESSAGE_HANDLER(WM_PAINT, OnPaint)
   END_MSG_MAP()

   LRESULT OnPaint(UINT nMsg, WPARAM wParam,
                   LPARAM lParam, BOOL& bHandled)
   {
      // Do some painting code
      return 0;
   }
};

//int WinMain(          HINSTANCE hInstance,
//    HINSTANCE hPrevInstance,
//    LPSTR lpCmdLine,
//    int nCmdShow
//)
extern "C" int WINAPI _tWinMain(HINSTANCE /*hInstance*/, HINSTANCE hPrevInstance,
                                LPTSTR /*lpCmdLine*/, int nShowCmd)
{
    _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
    HANDLE logFile;
    logFile = CreateFile("bstr_t_leak_LOG.txt", GENERIC_WRITE, FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
    _CrtSetReportFile(_CRT_WARN, logFile);
    _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);
    _CrtSetReportFile(_CRT_ERROR, logFile);
    _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
    _CrtSetReportFile(_CRT_ASSERT, logFile);

    {
        ATLASSERT(OleInitialize(0) == S_OK);
        AtlAxWinInit();

        {
            CMyWindow w;
            w.Create(0, 0, 0, WS_OVERLAPPEDWINDOW);
            w.DestroyWindow();
        }

        AtlAxWinTerm();
        OleUninitialize();
    }

    exit(0);
}

<br />
class CMyEdit : public  CWindowImpl <CMyEdit><br />
{<br />
    BEGIN_MSG_MAP(CMyEdit)<br />
        MESSAGE_HANDLER(WM_LBUTTONDOWN, OnLButtonDown)<br />
    END_MSG_MAP()<br />
<br />
};<br />
<br />
//Now at runtime:<br />
<br />
CMyEdit oMyEdit;<br />
oMyEdit.Attach(hWdnEdit);     //Assuming hWndEdit is Edit box handler <br />
<br />