First Win32 message sent

class Window{	HWND	m_Handle;public:	bool Create()	{		WNDCLASS WndClass;		ZeroMemory(&WndClass, sizeof(WNDCLASS));		WndClass.hbrBackground	= (HBRUSH)GetStockObject(BLACK_BRUSH);		WndClass.hCursor		= LoadCursor(0, IDC_ARROW);		WndClass.hIcon			= LoadIcon(0, IDI_APPLICATION);		WndClass.hInstance		= GetModuleHandle(0);		WndClass.lpfnWndProc	= StaticWndProc;		WndClass.lpszClassName	= "DFTLIB_WindowClass";		if(!RegisterClass(&WndClass))		{			LogFile::LogStream("errorlog.txt", true, "Error registering the window class %s.\n", WndClass.lpszClassName);			return false;		}		m_Handle = CreateWindowEx(0, WndClass.lpszClassName, "Window Class Test", WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0, 0, 640, 480, 0, 0, GetModuleHandle(0), this);		if(!m_Handle)		{			LogFile::LogStream("errorlog.txt", true, "Error creating the window %s.\n", "Window Class Test");			return false;		}		return true;	}	void Run()	{		MSG Msg;		ZeroMemory(&Msg, sizeof(MSG));		while(GetMessage(&Msg, 0, 0, 0))		{			TranslateMessage(&Msg);			DispatchMessage(&Msg);		}	}		LRESULT CALLBACK WndProc(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)	{		switch(nMsg)		{		case WM_KEYDOWN:			{				switch(wParam)				{				case VK_ESCAPE:					{						PostQuitMessage(0);						break;					}				}				return 0;			}		}		return DefWindowProc(hWnd, nMsg, wParam, lParam);	}	static LRESULT CALLBACK StaticWndProc(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)	{		Window* pWnd = 0;		switch(nMsg)		{		case WM_CLOSE:		case WM_DESTROY:			{				PostQuitMessage(0);				break;			}					case WM_NCCREATE:			{				pWnd = (Window*)(((LPCREATESTRUCT)lParam)->lpCreateParams);				SetWindowLong(hWnd, GWL_USERDATA, (long)pWnd);				break;			}		}				pWnd = (Window*)GetWindowLong(hWnd, GWL_USERDATA);		return pWnd->WndProc(hWnd, nMsg, wParam, lParam);	}};int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int){	Window Wnd;	Wnd.Create();	Wnd.Run();	return 0;}

#include <windows.h>#include <stdio.h>TCHAR *szWinName = TEXT("3Com");LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);static int InitFile(void);FILE *fp;// pointer to a file streamint WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,				   TCHAR *szCmdLine, int iCmdShow){	static TCHAR szClassName[] = TEXT("3Com");	HWND		hwnd;	MSG			msg;	WNDCLASS	wndclass;	if ( !InitFile() ) // Initialize and open up the file for output	{		return 0;	}	wndclass.cbClsExtra		= 0;	wndclass.cbWndExtra		= 0;	wndclass.hbrBackground	= (HBRUSH)GetStockObject(WHITE_BRUSH);	wndclass.hCursor		= LoadCursor(NULL, IDC_ARROW);	wndclass.hIcon			= LoadIcon(NULL, IDI_APPLICATION);	wndclass.hInstance		= hInstance;	wndclass.lpfnWndProc	= WndProc;	wndclass.lpszClassName	= szClassName;	wndclass.lpszMenuName	= NULL;	wndclass.style			= CS_HREDRAW | CS_VREDRAW;	if ( !RegisterClass(&wndclass) )	{		MessageBox(NULL, TEXT("This Program Requires Windows NT!"),			szWinName, MB_ICONEXCLAMATION);		return 0;	}	if ( !(hwnd = CreateWindow(szClassName,		szWinName,		WS_OVERLAPPEDWINDOW,		CW_USEDEFAULT,		CW_USEDEFAULT,		CW_USEDEFAULT,		CW_USEDEFAULT,		NULL,		NULL,		hInstance,		NULL)) )	{		MessageBox(NULL, TEXT("CreateWindow() Failed!"),			szWinName, MB_ICONEXCLAMATION);		return 0;	}	ShowWindow(hwnd, iCmdShow);	UpdateWindow(hwnd);	while ( GetMessage(&msg, NULL, 0, 0) )	{		TranslateMessage(&msg);		DispatchMessage(&msg);	}	fclose(fp); // close the File stream [if you fail to close before exiting, file will not work]	return msg.message;}LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam){	HDC			hdc;	RECT		updRect;	PAINTSTRUCT	ps;	TEXTMETRIC	tm;	static int cxClient, cyClient;	static int cxChar, cxCaps, cyChar;	switch ( iMsg )	{	case WM_CREATE :		fprintf(fp, "WM_CREATE\n");		hdc = GetDC(hwnd);		GetTextMetrics(hdc, &tm);		cxChar = tm.tmAveCharWidth;		cxCaps = (tm.tmPitchAndFamily & 1 ? 3 : 2) * cxChar / 2;		cyChar = tm.tmHeight + tm.tmExternalLeading;		ReleaseDC(hwnd, hdc);		return 0;	case WM_SETFOCUS :		fprintf(fp, "WM_SETFOCUS\n");		return 0;	case WM_ERASEBKGND :		fprintf(fp, "WM_ERASEBKGND\n");		hdc = GetDC(hwnd);		GetUpdateRect(hwnd, &updRect, FALSE);		FillRect(hdc, &updRect,			(HBRUSH)GetStockObject(WHITE_BRUSH));		ReleaseDC(hwnd, hdc);		return 1;	case WM_SIZE :		fprintf(fp, "WM_SIZE\n");		cxClient = LOWORD(lParam);		cyClient = HIWORD(lParam);		return 0;	case WM_PAINT :		fprintf(fp, "WM_PAINT\n");		hdc = BeginPaint(hwnd, &ps);		// do some drawing here...		EndPaint(hwnd, &ps);		return 0;	case WM_KILLFOCUS :		fprintf(fp, "WM_KILLFOCUS\n");		return 0;	case WM_DESTROY :		fprintf(fp, "WM_DESTROY\n");		PostQuitMessage(0);		return 0;	default :		break;	}	return DefWindowProc(hwnd, iMsg, wParam, lParam);}static int InitFile(void){	if ( !(fp = fopen("C:\\Order of Messages.TXT", "a")) )	{		MessageBox(NULL, TEXT("InitFile Failed!"),			szWinName, MB_ICONEXCLAMATION);		return 0;	}	return 1;}

class Window{LRESULT WndProc (HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam);}Window *w = ...;w->WndProc (...);

class Window{static LRESULT WndProc (Window *this, HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam);}Window::WndProc (w, ...);