用最短的MFC代码创建一个窗口

代码如下
文件1:stdafx.cpp
#include "stdafx.h"
文件2:stdafx.h
#include <afxwin.h>
文件3:minMFCwin.cpp
#include "stdafx.h"
class CMfcApp : public CWinApp
{
public:
virtual BOOL InitInstance();
};
CMfcApp theApp;
class CMainFrame : public CFrameWnd
{
public:
CMainFrame();
};

BOOL CMfcApp::InitInstance()
{
m_pMainWnd = new CMainFrame();
m_pMainWnd ->ShowWindow(SW_SHOW);
m_pMainWnd ->UpdateWindow();
return TRUE;
}


CMainFrame::CMainFrame()
{
// 创建窗口
Create(NULL,"最小的MFC窗口",WS_OVERLAPPEDWINDOW,CRect(0,0,200,200));
}