MFC Windows programming---Hello MFC!

1 The source code is as follows:

HelloMFC.h

#include<afxwin.h>

class CMyApp : public CWinApp
{
    
    
public:
	virtual BOOL InitInstance();
};

class CMainWindow : public CFrameWnd
{
    
    
public:
	CMainWindow();

protected:
 	afx_msg void OnPaint();
 	DECLARE_MESSAGE_MAP();
}

HelloMFC.cpp

#include"HelloMFC.h"

CMyApp myApp;

BOOL CMyApp::InitInstance()
{
    
    
	m_pMainWnd = new CMainWindow;
	m_pMainWnd -> ShowWindow(m_nCmdShow);
	m_pMainWnd -> UpdateWindow();

	return TRUE;
}

BEGIN_MESSAGE_MAP(CMainWindow, CFrameWnd)
ON_WM_PAINT()
END_MESSAGE_MAP()

CMainWindow::CMainWindow()
{
    
    
	Create(NULL, _T("The Hello Application"));
}

void CMainWindow::OnPaint()
{
    
    
	CPaintDC dc(this);

	CRect rect;
 	GetClientRect(&rect);

	dc.DrawText(_T("Hello,MFC"), -1, &rect, 
   		DT_SINGLELINE | DT_CENTER | DT_VCENTER);
}

2 How to use MFC library?

(The premise is to create a new project) Project --> Settings --> Microsoft Foundation Class --> Use MFC as a static link library


3 The result is as follows: