[MFC] Simplest MFC Program

#include <afxwin.h>

class CMyWinApp : public CWinApp
{
public:
    BOOL InitInstance()
    {
        CFrameWnd *pFrameWnd = new CFrameWnd;
        m_pMainWnd = pFrameWnd;
        pFrameWnd->Create(0, TEXT("Hello")); // calls ::RegisterClass & ::CreateWindow
        pFrameWnd->ShowWindow(SW_SHOW); // calls ::ShowWindow
        pFrameWnd->UpdateWindow(); // calls ::UpdateWindow

        return TRUE;
    }
};

CMyWinApp theApp;

class CFrameWnd : public CWnd

CFrameWnd::Create > CWnd::CreateEx >

1. CFrameWnd::PreCreateWindow > AfxDeferRegisterClass > _AfxRegisterWithIcon > AfxRegisterClass > ::RegisterClass
2. ::CreateWindowEx
   

[MFC] Simplified MFC Structure